Fieldbus Installation

D800003X172 May 2010

Fieldbus Installations in a DeltaV™ Digital Automation System

Printed in the Republic of Singapore.

© Emerson Process Management 1996 - 2010. All rights reserved. For Emerson Process Management trademarks and service marks, go to http://www.emersonprocess.com/home/news/resources/marks.pdf. All other marks are property of their respective owners. The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available on request. We reserve the right to modify or improve the design or specification of such products at any time without notice.

Emerson Process Management Distribution Ltd. Process Systems and SolutionsMeridian EastMeridian Business ParkLeicester, LE19 1uX, UK

Emerson a.s.European System and AssemblyPieštanská 1202/44Nové Mesto nad Váhom 91528Slovakia

Fisher-Rosemount Systems, Inc. – an Emerson Process Management company12301 Research Blvd.Research Park Plaza – Bldg. IIIAustin, TX 78759

Contents

Welcome. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .viiAbout This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . viiAssumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ixConventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix

Chapter 1 Overview to Fieldbus Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Redundant Series 2 H1 Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13Fieldbus Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Redundant Fieldbus Power for Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Terminators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Wiring Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Design Considerations, Restrictions, and Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Cable Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Cable Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Spur Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Selection Decisions and Trade-Offs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Geographic Distribution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Control Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Types of Field Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Recommendations for Installing a Fieldbus System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Grounding and Shielding of Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Overview to Installing a Fieldbus Segment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Installing Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Chapter 2 High Availability Fieldbus Applications. . . . . . . . . . . . . . . . . . . . . . . . . .27Relcom Fieldbus Power System for Redundant Fieldbus Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27DC Power Considerations for High Availability Applications Using the Fieldbus Power System . . . . . . . . . . . 31Short Circuit Protection with Megablocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Designing an Application for Short Circuit Protection Using Megablocks. . . . . . . . . . . . . . . . . . . . . . . . . . 34Installing and Connecting the Fieldbus Power System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Installing and Connecting Megablocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Verifying the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37High Availability Application Example for the Fieldbus Power System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Pepperl+Fuchs Fieldbus Power Hub for Redundant Fieldbus Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Contents iii

DC Power Considerations for High Availability Applications Using the Fieldbus Power Hub . . . . . . . . . . 42Short Circuit Protection with Segment Protectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Designing an Application for Short Circuit Protection Using a Segment Protector . . . . . . . . . . . . . . . . . . . 45Installing and Connecting the Fieldbus Power Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Installing and Connecting the Fieldbus Segment Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Verifying the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48High Availability Application Examples for the Fieldbus Power Hub. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

Chapter 3 Intrinsically Safe Fieldbus Applications . . . . . . . . . . . . . . . . . . . . . . . . .51DC Power Considerations for Intrinsically Safe Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Fieldbus Power Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Field Barrier for Intrinsically Safe Applications in Hazardous Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Installing and Connecting the Fieldbus Power Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Installing and Connecting the Field Barrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Verifying the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Intrinsically Safe Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

Chapter 4 Non-Incendive Fieldbus Applications . . . . . . . . . . . . . . . . . . . . . . . . . . .57DC Power Considerations for Non-Incendive Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57Fieldbus Power Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Short Circuit Protection with Segment Protectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Installing and Connecting the Fieldbus Power Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Installing and Connecting the Fieldbus Segment Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Verifying the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60Non-Incendive Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Appendix A Fieldbus Segment Checkout Procedure. . . . . . . . . . . . . . . . . . . . . . . .63Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Checkout Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63Fieldbus Segment Checkout Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Appendix B MTL Power Supplies for Intrinsically Safe Fieldbus Applications. . .71DC Power Considerations for IS Power Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72Host Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73Installing the MTL Intrinsically Safe Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76Intrinsically Safe Application Example with an MTL9122 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Appendix C MTL Power Supplies for Non-Incendive Fieldbus Applications. . . . .79DC Power Considerations for Non-Incendive Power Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80Host Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

iv Fieldbus Installations in a DeltaV Digital Automation System

Installing the Non-Incendive Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84Non-Incendive Application Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Application Example with two MTL9111-NI Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Application Example with one MTL9112-NI Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Appendix D Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89Troubleshooting with the H1 Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90Troubleshooting with the DeltaV Explorer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91Troubleshooting with DeltaV Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Troubleshooting Common Fieldbus Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Device or Segment Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96The H1 Card is not Communicating with the DeltaV System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97Communication Error or Incorrect Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Problems Commissioning Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99Missing Values in Resource or Transducer Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100Simulate not Working in Control Studio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101Trouble-Shooting Q and A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

Fieldbus Third Party Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .103

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107

Contents v

vi Fieldbus Installations in a DeltaV Digital Automation System

Welcome

Welcome to the Emerson Process Management DeltaV digital automation system. The DeltaV system offers easy-to-install hardware and powerful, user-friendly software for advanced process control scaled to the system size you need.

About This ManualThis manual provides an overview of the fieldbus technology and presents a simplified approach to installing and using a fieldbus system with the DeltaV software. For complete information on the fieldbus protocol, refer to the Fieldbus Foundation. This manual contains the following sections:

Chapter 1, Overview to Fieldbus Technology, provides general information on fieldbus components and design considerations and an overview on installing a fieldbus segment.

Chapter 2, High Availability Fieldbus Applications, provides instructions for installing fieldbus components for applications requiring redundant Series 2 H1 cards, redundant fieldbus power, and short circuit protection.

Chapter 3, Intrinsically Safe Fieldbus Applications, provides instructions for installing fieldbus components for applications requiring Intrinsically Safe protection.

Chapter 4, Non-Incendive Fieldbus Applications, provides instructions for installing fieldbus components for applications requiring Non-Incendive protection.

The Appendices include a fieldbus segment checkout procedure, a troubleshooting guide, and additional Non-Incendive and Intrinsically Safe application examples.

Other sections contain references for locating recommended third party products references for additional information on the fieldbus protocol.

Welcome vii

This manual documents the use of Third Party Products for fieldbus installations. The reader should understand that this indicates only that the product has been tested for interoperability with the DeltaV system. EMERSON PROCESS MANAGEMENT PROVIDES NO WARRANTY OF DESIGN, MATERIAL, WORKMANSHIP, PERFORMANCE, FITNESS, MERCHANTABILITY OR OTHERWISE IN CONNECTION WITH SUCH PRODUCTS. Warranties for Third Party Products may be obtained only from the applicable manufacturer.

viii Fieldbus Installations in a DeltaV Digital Automation System

AssumptionsIt is assumed that you have read the Site Preparation Guide for DeltaV Automation Systems and have followed the instructions for properly preparing your site for electrical power and grounding before installing your DeltaV System. It is also assumed that you have read the Installing Your DeltaV Digital Automation System manual and have correctly installed your DeltaV system. Contact your Emerson Process Management sales office for these documents.

This manual, Fieldbus Installations in a DeltaV Digital Automation System, shows factory tested and supported wiring connections. If your system requires a different configuration, contact your Emerson Process Management representative or sales office for help with design or review. It is assumed that all installation and maintenance procedures described in this document are performed by qualified personnel and that the equipment is used only for the purposes described.

ConventionsWarnings, cautions, notes and procedures are used in this manual to emphasize important information.

Warning A warning describes a critical procedure that must be followed to prevent a safety risk or equipment damage.

Caution A caution describes a procedure that must be followed to prevent equipment malfunction.

Note A note is a procedure, condition, or statement that will help you understand and operate your system.

Itemizes steps necessary to execute installation procedures.

Welcome ix

x Fieldbus Installations in a DeltaV Digital Automation System

Overview to Fieldbus Technology 11

Chapter 1 Overview to Fieldbus Technology

This document provides the information required to select components from Emerson Process Management and third party suppliers to design and install a working fieldbus segment. It presents a simplified approach and covers a variety of applications.

Figure 1 Fieldbus Segment

s

s

Fieldbus

IPM IPM

FPS-RCI

A1 A

2

A

BPower In

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

RedundantSeries 2 H1 Cards

RedundantFieldbuspower supply

H1 Fieldbus

Segment

WorkstationDeltaV

Several documents exist that cover the technical aspects of fieldbus in great detail. For the purposes of this discussion, fieldbus technology allows devices from multiple manufacturers to connect to a communications bus. The communications protocol is designed to allow multiple devices to share information based on a schedule that is executed by a Link Active Scheduler (LAS).

A Link Master device controls when devices access the fieldbus and executes the link schedule which synchronizes communications with function block execution on the fieldbus. The H1 card or any field device that supports Link Master functionality can function as a Link Master device. Only one Link Master device can be active at a time on the fieldbus segment. This device is called the LAS. The DeltaV system can configure one Link Master device to function as the primary Link Master device. When the primary Link Master device is attached to the fieldbus, it takes over as the LAS. The H1 card always functions as the primary Link Master. When the H1 card is redundant, the secondary H1 functions as the primary Link Master if the primary H1 card fails. All other Link Master devices are backup Link Master devices that can take over as LAS only if the primary Link Master device fails. One backup Link Master field device is supported per fieldbus segment. The fieldbus devices communicate on a schedule (executed by the LAS) as required to implement the control strategy.

A key benefit of fieldbus technology is interoperability – the ability to operate multiple devices, independent of manufacturer, in the same system, without loss of functionality.

This document is based on the following assumptions about a fieldbus application or installation:

Each device has an average load of 20 mA.

Devices are connected at one end of the segment and the fieldbus power supply is connected at the other end of the segment.

Spur lengths are short – 10 meters.

If these assumptions are incorrect for your application, this document attempts to provide information that will help you to resolve the issues and design a suitable solution. For complete information on the fieldbus protocol, refer to the Fieldbus Foundation.

The applications in this document make use of redundant Series 2 H1 cards, redundant fieldbus power supplies, and device connection blocks with short circuit protection. For applications that do not require this level of high availability, simplex H1 cards, simplex fieldbus power supplies, and device connection blocks without short circuit protection are also available.

12 Fieldbus Installations in a DeltaV Digital Automation System

ComponentsThe following sections describe the primary components in a fieldbus segment:

Redundant Series 2 H1 card

Fieldbus power supply

Terminators

Wiring components

Redundant Series 2 H1 Card

The DeltaV Series 2 H1 interface card is the starting point for the communications on a fieldbus segment. The DeltaV system provides initialization, diagnostics, and run-time monitoring for a fieldbus segment. Depending on the control strategy, the DeltaV system either executes the control algorithm or, if control resides in the fieldbus devices, displays the ongoing parameters.

The Series 2 H1 card supports redundancy. A Series 2 H1 card reports its operating mode (simplex or redundant) to the DeltaV controller (MD controller for Series 2 H1 in redundant mode) based on the type of terminal block on which it is installed. When a redundant pair (an Active and a Standby Series 2 H1 card) is installed on the Redundant H1 terminal block, it reports itself as operating in redundant mode. When a single Series 2 H1 card is installed on the Series 2 H1 terminal block, it reports itself as operating in simplex mode.

For redundant applications, the redundant Series 2 H1 cards ensure uninterrupted communications between a fieldbus segment and the DeltaV system. For applications requiring protection such as high availability applications, the redundant Series 2 H1 card can be used in conjunction with redundant power and short circuit protection. Figure 7 on page 38 and Figure 10 on page 49 show the use of Series 2 redundant H1 cards in high availability applications. Figure 2 shows a redundant Series 2 H1 card.


Figure 2 Redundant Series 2 H1 Card

The Series 2 H1 card requires 12 mA of fieldbus power in simplex mode and an additional 12 mA of fieldbus power (24 mA total) in redundant mode. Be sure to account for the additional power requirements in your segment design.

The Installing Your DeltaV Digital Automation System manual contains specifications and wiring and pinout diagrams for the H1 card and the Series 2 H1 card (in both Simplex and Redundant modes). In addition, the manual contains specifications and pinout diagrams for the H1 terminal block, the Series 2 H1 terminal block, and the Redundant H1 terminal block.

Note The H1 card is the only primary Link Master allowed on the fieldbus segment. The DeltaV system supports one backup Link Master device on each fieldbus segment.

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2


Fieldbus Power Supplies

The fieldbus specifications call for a power supply on the segment to provide power to all devices that are not self-powered. A standard DC power supply connected directly to the segment would attempt to regulate out the digital communications between devices on the segment. To prevent this, a power supply with power conditioning that contains a specific impedance profile must be installed between the bulk power supply and the fieldbus segment. A fieldbus power supply provides the required conditioning and powers the individual field devices. Fieldbus power supplies are available for simplex, redundant, Intrinsically Safe, and Non-Incendive applications.

Important In addition to the conditioning requirement, neither signal on the segment can be connected directly to ground. The power supplied to the segment must be isolated from ground and from any other uses.

The power requirements for fieldbus devices differ, but the average is 20 mA per device. The DeltaV system supports 16 field devices on a segment.

Redundant Fieldbus Power for Applications

Emerson Process Management recommends the use of redundant fieldbus power in conjunction with short circuit protection for the following types of fieldbus applications:

High Availability

Intrinsically Safe

Non-Incendive

When redundant fieldbus power is used, the process remains in control if one supply fails because the other supply continues to provide power to the devices on the segment.

High Availability Fieldbus Applications

For information on high availability applications refer to “High Availability Fieldbus Applications” on page 27.

Intrinsically Safe Fieldbus Applications

For information on Intrinsically Safe fieldbus applications for use in both entity and FISCO (Fieldbus Intrinsically Safe COncept) IS applications, refer to “Intrinsically Safe Fieldbus Applications” on page 51.


Non-Incendive Fieldbus Applications

For information on Non-Incendive applications refer to “Non-Incendive Fieldbus Applications” on page 57.

Terminators

A fieldbus segment acts as a transmission line for data communications between the various devices. A terminator balances the impedance at each end of a transmission line to ensure reliable communications. Fieldbus power supplies and device connection blocks may provide a fixed or switchable terminator for one end of the segment. Ensure that each segment is terminated in two places.

Wiring Components

Emerson Process Management recommends a family of connection blocks and cable components for use in installing your fieldbus segment. These components include standard junction blocks, junction blocks with short circuit protection, and terminators. These components can be used with fieldbus cable that you can purchase from recommended suppliers. All of these components are selected to not degrade the communications between devices.


TopologiesA simple view of a fieldbus segment is shown below. This picture shows a bulk power supply, fieldbus power supply, two terminators, two field devices, and an H1 host. The fieldbus power supply provides the power required for the devices and contains the conditioning element.

In this document, the wire or cable between the two terminators is referred to as the trunk, and any connections that branch off from the trunk are referred to as spurs. In the image above, the fieldbus power supply, the H1 host, and field devices, are shown connected between the terminators. Any of these three devices can be connected as spurs between the terminators or as spurs beyond the main trunk.

There are several ways to design a fieldbus segment topology: point-to-point, chicken-foot, daisy chain, trunk with spurs, and tree. This document focuses on a trunk with spurs topology and takes into account the different types of wiring that are available for fieldbus segments, wire distribution issues, length restrictions, and power issues.

Note Daisy chaining from device to device is not recommended. The wiring strategy detailed within this document does not lend itself to daisy-chaining from one device to the next within the spur.

To minimize the possibility of communication problems, Emerson Process Management recommends that the trunk be a continuous run of the same type of cable. Fieldbus Type A cable is recommended. Devices can be connected anywhere along the trunk, following the rules associated with spur length.

T

Bulk powersupply

Fieldbuspowersupply

T

H1 host


Fieldbus was designed to operate properly on a variety of existing plant wiring and it is possible that your specific application could operate on existing runs of instrument cable. However, as the cable length and number of devices increase, it is possible to exceed the reliable operating margins of the fieldbus segment if you do not keep the application-specific requirements in mind when you design the segment.

The following sections describe the restrictions on the total length of spurs on a segment, the number of devices allowed on individual spurs, and the impact on that individual spur’s length.

Design Considerations, Restrictions, and LimitationsThere are some restrictions around cable type, cable and spur length and DC power that you should be aware of when planning a fieldbus segment.

Cable Type

The fieldbus specifications recommend that new fieldbus Type A cable be used whenever possible. The standard fieldbus Type A cable provides a maximum distance of 1900 meters for a single segment. Before using any other type of cable, verify the cable characteristics to determine its suitability and the maximum distances associated with its use.

When upgrading a system to fieldbus devices, you can use existing instrument wiring such as multi-conductor cable if you require a significantly reduced cable length. Where it is required, we recommend at a minimum the use of Type B cable which has multiple twisted pairs with an overall shield. This type still provides reasonable distance at 1200 meters.

Since the DeltaV Controller and I/O can be remotely mounted, there should be minimal need for the multi-conductor cables.

Note For new and upgrade installations, Emerson Process Management highly recommends only new fieldbus Type A cable for the trunk and spurs.


At a minimum, use new fieldbus Type A cable for all trunk portions of the segment, and use existing field wiring only for spurs of short length. Table 1 provides information on fieldbus Type A cable.

For further information on types of cable, distances, and other specifications, contact the Fieldbus Foundation.

Cable Lengths

The length of the cable is calculated as the overall length of the main trunk cable plus the length of all of the spur cables. This document assumes short spur lengths of 10 meters and the calculation for the main trunk should be sufficient in many cases. If you are using longer spur cables, include their length in the overall calculation. Refer to the next section for more information on spur length.

Table 1 Specifications for Fieldbus Type A Cable

Item Specification

Cable SP50 fieldbus Type A 18 AWG1 twisted pair with foil shield and stranded drain wire tinned stranded conductors 105 C

Approvals UL CSA or C(UL)

Max Distance Meters/(Feet)

1900/(6270)

Characteristic impedance

100

Resistance Ohms/km 22 (loop resistance is 44 ohms/km)

Attenuation db/km 3 attenuation @ 39K Hz


Spur Lengths

A spur is a drop off of the main trunk (the cable between the two terminators). If you have a choice about spur length, shorter is better. The total spur length is limited according to the total number of devices on the segment.


Selection Decisions and Trade-OffsThe plan and design of the individual segments depend upon several criteria. Some of the things that need to be taken into account are:

Geographic distribution of the field devices

Control strategy

Types of field devices

Geographic Distribution

Generally speaking, you can connect a maximum of 16 field devices plus one H1 card (simplex or redundant) to a fieldbus segment. Geographic distribution of the fieldbus devices can reduce the number of devices when the length of the cable exceeds 400 to 500 meters. In general, short spurs that allow longer trunk lengths are recommended. For additional information on distances for:

High availability applications, refer to Table 5 on page 43.

Intrinsically Safe applications, refer to Table 6 on page 53

Non-Incendive applications, refer to Table 7 on page 59.

Control Strategy

When you design your control strategy, consider loop execution rates, the number of function blocks running on the segment, and pre and post processing calculations. An H1 card can support two independent fieldbus segments. Refer to Books Online for more information on designing a fieldbus control strategy.

Types of Field Devices

Be sure to verify that the field devices you intend to connect to the segment are supported by the DeltaV system and account for increased power if they draw more than the assumed 20 mA from the bus.


Recommendations for Installing a Fieldbus SystemThis section provides recommendations for installing the system, a brief description of the steps required, and includes detailed instructions and diagrams for installation.

Warning This installation procedure contains steps that are to be performed in non-hazardous or safe locations only. For installations in hazardous locations, follow your plant's procedures to make the area safe during installation.

Note It is highly recommended that you follow the segment checkout procedure in Appendix A prior to system startup.

Tools

Installing fieldbus devices and segments is similar to installing other types of devices or products. Many of the standard electrical tools are required for the installation. However fieldbus is also a communications network. In addition to the standard electrical tools (voltmeter, wire cutter, wire stripper, pliers, and screwdrivers) you will need the following tools for troubleshooting communications networks:

Fluke 123 or 124 Digital Scope Meter or equivalent scope with resistance, DC voltage, and capacitance measurement capability. (Most capacitance meters measure components only and may not provide the expected results when measuring a complete segment.)

Grounding and Shielding of Cable

Important Fieldbus segments should never have either conductor grounded. The shield for the segment wiring should be continuous and connected to ground in only one place: either at the shield bar beneath the H1 card or at the fieldbus power supply. Making more than one connection to ground on the shield can cause a ground loop to form and the unexpected current flow could disrupt communications.


Overview to Installing a Fieldbus SegmentThis section lists the basic steps for installing a fieldbus segment.

1. Route the fieldbus cable and ensure that each segment is properly terminated.

2. Install the Series 2 H1 card(s), connect the card(s) to the segment, and enable the appropriate ports.

Remember to allow for 12 mA of fieldbus power for the Series 2 cards: (12 mA in simplex mode and 24 mA total in redundant mode).

3. If the devices have previously had their device tags assigned: • connect all the devices to the segment.

• commission the devices, following the instructions in the DeltaV Explorer online help.or

4. Most devices ship with a label on which is printed the device’s serial number and device ID. The label is used to identify the device in the field. Assign the device tags based on the labels, and then:• connect all the devices to the segment.

• commission the devices, following the instructions in the DeltaV Explorer online help.or

5. If the devices have not had their device tags assigned or there is no label with device ID and serial number:• connect the devices to the segment one at a time.

• verify that each device appears in the de-commissioned devices list for the port.

• commission the devices, following the instructions in the DeltaV Explorer online help.

6. Perform the installation checkout in Appendix A.

Tip Without knowing the device ID, it is difficult to determine which device you are attempting to commission if you connect several devices of the same type to the segment at the same time.


Figure 3 provides an overview of cable connections between a redundant Series 2 H1 card, redundant fieldbus power supply, megablock, and terminator. The terminator in the power supply and external terminator are used in this application.

Figure 3 Installation Overview

1 2 3 6 7 84 5

Port1

Port2

S

S

MegablockMB 8-SG

4

1 2 3

5 6 7 8

Po

we

r

FC

S-M

B8-S

G

S S S S S

S S S S S

Trunk Trunk

GND

S

S

s

s

Fieldbus

IPM IPM

FPS-RCI

A1 A

2

A

BPower In

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Ground

FCS-MBTTerminator

Relcom Inc.

S

RedundantSeries 2 H1 Card


Installing Cable

Installing cable to the H1 Card

Refer to Figure 3 on page 24.

Wire the segment paying close attention to the signal wiring positive (+) and negative (-) connections.

Installing cable to the power supply

For general information, refer to Figure 3 on page 24.

For applications using the Relcom Fieldbus Power System, refer to “Installing and Connecting the Fieldbus Power System” on page 35.

For applications using the Pepperl+Fuchs Fieldbus Power Hub, refer to “Installing and Connecting the Fieldbus Power Hub” on page 46

Installing cable for short circuit protection

Short circuit protection can be provided by Megablocks, Segment Protectors, and Field Barriers.


For applications using Megablocks, refer to “Installing and Connecting Megablocks” on page 36.

For applications using Segment Protectors, refer to “Installing and Connecting the Fieldbus Segment Protector” on page 47.

For applications using Field Barriers, refer to “Installing and Connecting the Field Barrier” on page 55.

Important If using ferrules on the wires, use ferrules with an uninsulated shaft of adequate length to prevent the ferrule insulator from interfering with the connectors.


Installing cable to the terminators


Once the segment layout is determined, a terminator must be used at both the power supply side and the field side of the main trunk cable. The segment layout will determine the location of the terminators and whether or not the integrated terminator on the power supply or device connection block is used. Remember that spur cables are not part of the main trunk and are normally not considered in the placement of the terminators.

Installing cable to shield ground


For applications using Megablocks, refer to “Installing and Connecting Megablocks” on page 36.

For applications using Segment Protectors, refer to “Installing and Connecting the Fieldbus Segment Protector” on page 47.

For applications using Field Barriers, refer to “Installing and Connecting the Field Barrier” on page 55.

Refer to “Checkout Procedure” on page 63 after installing the cable to ensure that the cable is correctly installed and that the segment is properly grounded, powered, and isolated.


Chapter 2 High Availability Fieldbus Applications

This chapter provides information about fieldbus applications that require high availability. A high availability application includes a redundant Series 2 H1 card and redundant fieldbus power. In addition, a high availability application includes short circuit protection for the segment.

The first application shown in this chapter uses the Redundant Fieldbus Power System (FPS-Series) and Megablock with SpurGuards from Relcom, Inc. The second application uses the FieldConnex® Fieldbus Power Hub and FieldConnex® Segment Protector from Pepperl+Fuchs. The Relcom power supply is a redundant fieldbus power supply for a single segment with options for multi-segment use. The Pepperl+Fuchs power supply is a redundant fieldbus power supply for up to four segments with options for single-segment use.

Refer to the Relcom and Pepperl+Fuchs documentation for additional information on their products.

Relcom Fieldbus Power System for Redundant Fieldbus Power

The FPS-I connects to one or two +24 VDC input power supplies and provides redundant fieldbus power to a single fieldbus segment. A single FPS-I consists of:

A Redundant Coupler (RC)

Two isolated fieldbus power modules (IPMs)

Table 2 shows the FPS-I specifications.

Table 2 Fieldbus Power System Specifications

FPS-I Specification

Input voltage 24 VDC (18-30 VDC)

Fieldbus output current 350 mA @ 25-28 VDC

Maximum power dissipation 4.5 W max @ rated output

Dimensions 4.9 cm. x 10.1 cm. x 13.3 cm. (1.95 in. x 4 in. x 5.25 in.)

Operating temperature range -40 to 60 º C

Alarm contact rating 1 A max @ 30 VDC max

High Availability Fieldbus Applications 27

Figure 4 Fieldbus Power System

The FPS-I consists of two isolated power modules (IPM) that plug into each Redundant Coupler (RC). The IPMs are removable under power. The RCs are mounted on a DIN rail. One RC is used for each fieldbus segment. RCs can be connected together with pre-made jumpers to add additional fieldbus segments as shown in Figure 5 on page 30. One fieldbus terminator is built into each RC. Remember that each segment must have two terminators.

s

s

Fieldbus

IPM IPM

FPS-RCI

A1 A

2

A

BPower In

Alarm jumper

Jumperconnections

Isolated PowerModules

24 V B

24 V A

Alarm

Redundantcoupler

FieldbusSegmentConnection

H1 Connection

Terminator


Refer to Figure 4. Each RC has:

Two, 3-position pluggable connectors. One connector is intended for the H1 host and the other for the fieldbus segment.

Two 6-position pluggable connectors for two nominal 24 VDC input power sources and an alarm circuit. When the FPS-I is powered and functioning within its specifications, the alarm circuit provides a closed contact circuit. A failure in either input power supply, either IPM, or an over-current or short on any fieldbus output, opens the alarm circuit. The alarm circuit is galvanically isolated from the fieldbus segments and input power supplies. Connect the alarm pins together to complete the circuit. When using multiple Fieldbus Power Systems, connect together the last alarm pins in the group as shown in Figure 5.

Figure 5 shows multiple Fieldbus Power Systems connected together with pre-made jumpers. To add RCs without removing power to the other units when using multiple Fieldbus Power Systems, wire the two power sources to both ends of the group.


Figure 5 Multiple Fieldbus Power Systems

Refer to “Installing and Connecting the Fieldbus Power System” for installation information.

s

s

Fieldbus

IPM IPM

FPS-RCI

A1 A

2

A

BPower In

s

s

Fieldbus

IPM IPM

FPS-RCIA

1 A

2

A

BPower In

s

s

Fieldbus

IPM IPM

FPS-RCI

A1 A

2

A

BPower In

Last alarm jumper

24 V A

FieldbusSegmentConnections

H1 Connections Jumper Connections

24 V B

Alarm

24 V A

24 V B


DC Power Considerations for High Availability Applications Using the Fieldbus Power System

The available power to a field device depends on the length and resistance characteristics of the fieldbus cable. The formula for the calculations in Table 3 on page 32, which shows the maximum distance for a given load on the Fieldbus Power System, is based on the following assumptions:

Power Supply Voltage = 25.0 VDC @ 350 mA

Minimum Device Voltage = 9 VDC (calculations use 9.5 VDC)

Maximum Voltage drop from cable = 15.5 VDC

Each device has an average load of 20 mA

Fieldbus Type A 18 AWG cable @ 22 ohms/km (44 ohms/km loop resistance) at 22°C

Devices are connected on one end of the cable and the Fieldbus Power System is connected on the other end of the cable

Maximum Distance (km) = (Allowed Loop V drop / Loop current) / Loop resistance per km

There will be different restrictions and limitations on your segment if these assumptions do not hold for your segment layout. If your devices average more than 20 mA per device, reduce the maximum cable length indicated in the table for that number of devices or reduce the number of devices on the segment. Refer to the device documentation for information on current requirements for the device.

When referring to Table 3, remember that the H1 card requires 12 mA of fieldbus power in simplex mode and an additional 12 mA of fieldbus power (24 mA total) in redundant mode. Table 3 includes the maximum distance, in meters, for applications with and without Megablocks with SpurGuards. The distance is reduced to allow for an application design that uses a Megablock with SpurGuards to prevent a short on the spur from disrupting the trunk.


.

Table 3 Distance per Load on the Fieldbus Power System with and without Megablocks with SpurGuards

Number of Devices / Load (mA)

Power Supply Load (mA) Maximum Distance

without Megablock with SpurGuards

(meters)

Maximum Distance

with Megablock with SpurGuards

(meters)Series 2 H1 Simplex

Series 2 H1 Redundant

1 / 20 32 44 1900 1900

2 / 40 52 64 1900 1900

3 / 60 72 84 1900 1900

4 / 80 92 104 1900 1900

5 / 100 112 124 1900 1850

6 / 120 132 144 1900 1670

7 / 140 152 164 1900 1520

8 / 160 172 184 1855 1395

9 / 180 192 204 1725 1290

10 / 200 212 224 1570 1200

11 / 220 232 244 1440 1120

12 / 240 252 264 1330 1050

13 / 260 272 284 1240 990

14 / 280 292 304 1155 N/A

15 / 300 312 324 1085 N/A

16 / 320 332 344 1020 N/A


Short Circuit Protection with MegablocksThe Relcom Megablocks with SpurGuards (SG) connect field devices to the fieldbus segment cable and provide short circuit protection to the segment. Figure 6 shows an FCS-MB8- SG for eight devices. The Megablock mounts on a DIN rail and requires a connection to a terminator (+, -, and S) from one of the trunk connectors. To connect multiple Megablocks together, use a short jumper cable between the trunk connectors on the Megablocks.

Figure 6 Megablock Spur Guard for 8 Devices

Trunk Trunk

FC

S-M

B8-

SG 4 5 6 7 8

1 2 3

Po

we

r

S S S S S

SSSS S


Designing an Application for Short Circuit Protection Using Megablocks

When designing an application that uses a Megablock for short circuit protection, allow an additional 60 mA in the design to give the power supply the additional current capability to support a short circuit in one device (should it occur) and continue to power the segment without interruption. Normally a 0.5 voltage drop (assuming a 20 mA device) occurs across the Megablock to the device. An additional voltage drop occurs during a short circuit condition. To prevent devices from dropping off the segment because of reduced voltage, be sure that the application design allows for the voltage drop in both the normal and short circuit condition. Use the following calculation to calculate the short circuit voltage drop to the farthest device:

.060A X (44 ohms/km) X distance in km

The following example calculates the voltage drops on 0.5 km segment to the farthest device:

Normal voltage drop = 0.5 Volts

Short circuit voltage drop =.060A X (44 ohms/km) X.5 km = 1.32 Volts

Total voltage drop = normal voltage drop + short circuit voltage drop = 1.82 volts.

This calculation is based on a design that allows for one short circuit in a running segment. For example, a situation in which an inadvertent shorting of a device occurs during routine replacement on an operating system. The calculation does not allow for multiple short circuit conditions in a new installation that has not been verified with the segment checkout procedure. Table 3 includes maximum distances when the application uses a Megablock with SpurGuards.


Installing and Connecting the Fieldbus Power System

To install the Redundant Coupler and connectors

1. Attach the top latch of the Redundant Coupler onto the DIN rail and push the unit into place.

2. Plug the IPMs, H1 connector, fieldbus segment connector, and the input power/alarm circuit connector into the Redundant Coupler.

To connect the Fieldbus Power System (FPS-I)


1. Connect the primary 24 VDC input positive (+) to the 24 V A + terminal and the primary 24 VDC input negative (-) to the 24 V A - terminal.

2. Connect the secondary 24 VDC input positive (+) to the 24 V B + terminal and the secondary 24 VDC input negative (-) to the 24 V B - terminal.

3. For a single unit, connect the alarm wires and short the alarm pins on the opposite side of the fieldbus power system.

4. Connect the segment positive (+) wire to the fieldbus segment + and the segment negative (-) wire to the fieldbus segment -.

5. Connect the segment shield wire (S) to the fieldbus segment S.

6. Connect the H1 card positive wire (+) to the H1 + and the H1 card negative wire (-) to the H1 -.

7. Connect the H1 card shield wire (S) to the H1 S.

Note Ground the shield at only one point — usually at the H1 card on the shield ground bar.


To connect additional Fieldbus Power Systems


1. Install the second Redundant Coupler (RC 2) onto the DIN Rail next to RC 1 and plug in the IPMs, H1 connector, and fieldbus segment connector.

2. Insert one end of the pre-made jumper into the right-hand side power and alarm wiring connector on RC1 and the other end into the left-hand side power and alarm wiring connector on RC 2.

3. Connect the segment wiring and H1 cards.

4. Follow steps 1-3 for each additional RC.

5. Connect the last alarm pins in the group together to complete the circuit.

A maximum of eight Fieldbus Power Systems can be connected together in a group.

Installing and Connecting MegablocksRefer to Figure 6 on page 33.

To install and connect a Megablock

Notice that the Trunk connectors are black and the spur connectors for the devices are gray.

1. Attach the top latch of the Megablock onto the DIN rail and push the unit into place.

2. For the Trunk connector (black): connect the positive (+) segment wire to the positive, connect the negative (-) segment wire to the negative, and connect the segment shield (S) to the S.

3. For each device connector (gray): connect the positive (+) spur wire to the positive, connect the negative (-) spur wire to the negative, and connect the shield wire (S) to the S.

4. If this Megablock is the end of the segment, connect a terminator (Relcom FCS-MBT) at the end of the Trunk and at a ground connection. Use a properly sized ground wire to reduce the risk of a surge affecting the segment.


5. If the segment continues and connects to another Megablock, continue the Trunk by connecting it to the next Megablock and make the connections described in steps 2 and 3.

6. At each device, ensure that the shield is isolated and not connected to the device.

7. If this Megablock is the end of the segment, connect a terminator (Relcom FCS-MBT) at the end of the Trunk and at a ground connection. Use a properly sized ground wire to reduce the risk of a surge affecting the segment.

Verifying the Installation

Use the segment checkout procedure on page 63 to measure resistance, capacitance, DC voltage, and the AC waveform (steps 1, 2, 4, and 5) with only one of the IPMs installed. Then, measure DC voltage and the AC waveform (steps 4 and 5) again with both IPMs installed. Verify that the measured DC voltage allows for the additional voltage drop if a short circuit should occur.

High Availability Application Example for the Fieldbus Power System

Figure 7 shows an application that uses a redundant pair of Series 2 H1 cards with redundant fieldbus power for both segments and short circuit protection for devices on a long (0.5 km) trunk cable. If a failure occurs on an H1 card, a 24 V power supply, or a fieldbus power supply, the segments continue to operate as expected. A status indication on connected alarms alerts the operator that an error has occurred. It is assumed that the application design follows the criteria specified in “Designing an Application for Short Circuit Protection Using Megablocks”. Therefore, if a short occurs when a device is installed or removed from the segment, only that device is affected; the rest of the segment is unchanged.


Figure 7 High Availability Application Example

RedundantSeries 2 H1cards

Port 1 Port 2

IPM IPM

s

IPM IPM

s

GND

H1H1

0.5 km CablePort 1 Port 2

Secondary24 VDC

Primary24 VDC

Shielded pairwith drain wire

Alarmcontacts

Secondary24 VDC

Primary24 VDC

Jumper

Fieldbuspower supplies

Shieldedpair withdrain wire

MB8 - SGMegablock

MB8 - SGMegablock

Terminator

Surgeprotectionground

Devices

Devices

Carriershield bar

GND


Pepperl+Fuchs Fieldbus Power Hub for Redundant Fieldbus Power

The Fieldbus Power Hub connects to one or two +24 VDC input power supplies and provides redundant fieldbus power to up to four fieldbus segments. A Fieldbus Power Hub system includes:

Fieldbus Motherboard - MB-FB-4R

Galvanically Isolated Fieldbus Power Supply Modules - FBPS-1.500 (two per segment for four segments maximum)

Fieldbus Diagnostic Module - DM-B

Table 4 shows specifications for the Fieldbus Power Hub with the FBPS-1.500 Isolated Power Supply module.

Figure 8 shows a Fieldbus Power Hub installed with redundant power supplies for four segments and a Diagnostics module.

Table 4 Fieldbus Power Hub with FBPS-1.500 Isolated Power Supply Module Specifications

Fieldbus Power Hub with FBPS-1.500 Specification

Input voltage 24 VDC (19.2-35 VDC)

Fieldbus output current – FBPS-1.500 500 mA @ 28-30 VDC

Typical power dissipation 2.5 W per segment

Dimensions 22.1 cm. x 24.6 cm. x 16.2 cm. (8.7 in. x 9.7 in. x 6.4 in.)


Alarm contact rating - Diagnostic Module 1 A max @ 50 VDC max


Figure 8 Fieldbus Power Hub with Four Redundant Segments and a Diagnostics Module

The Fieldbus Power Hub consists of a DIN rail-mounted Motherboard which supports plug-in modules that provide redundant power for up to four fieldbus segments plus one Diagnostic Module. Two FBPS-1.500 Isolated Power Supplies plug into the Motherboard to power each segment. The Diagnostic Module provides diagnostic monitoring and relay contacts for the segments. The plug-in modules are removable under power. A fieldbus terminator on the motherboard can be switched on for each segment. Each segment must have exactly two terminators.

S

Alarm

Diagnostic Bus

PRIPWR

SECPWR

PEPPERL-FUCHS

Fieldbus Power Hub

Fieldbus Motherboard

OFF +Segment 1

SOFF +Segment 2

SOFF +Segment 3

SOFF +Segment 4

FieldConnex

Host A

OFF

S --- +

Host BSEG1

ON

S +

Host A

OFF

S --- +

Host BSEG2

ON

S +

Host A

OFF

S --- +

Host BSEG3

ON

S +

Host A

OFF

S --- +

Host BSEG4

ON

S +

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2DMB

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

Primary and secondary

power connectors

Alarm contacts

Diagnostic bus

Shield ground connection

Diagnostics moduleTrunk connectors forsegments 1-4

Redundantpower suppliesfor segments 1-4

Host power switches for segments 1-4

Host connectorsA & B forsegments 1-4

Termination switchesfor segments 1-4


Refer to Figure 8 on page 40. The Fieldbus Power Hub has:

Two, 2-position pluggable connectors for Primary and Secondary 24 VDC input Power.

Three, 4-position pluggable connectors for the alarm contacts and the Diagnostic Bus.

Four, 3-position pluggable connectors for connection to the H1 host (Host A); one for each of the four segments.

Four, 3-position pluggable connectors for connection to a second host (Host B, not used); one for each of the four segments.

Four redundant host power switches for connecting host power to each of the four segments. All switches must be in the On position.

Four, 3-position pluggable connectors for connection to the fieldbus segment, one for each of the four segments.

Four termination switches for connecting an integrated fieldbus terminator to each of the four segments.

One connection for connecting the cable shields to ground.

When the Fieldbus Power Hub is powered and functioning within its specifications the alarm circuit provides a closed-contact circuit. A failure in either input power supply, any fieldbus power supply module, or an over-current or short on any fieldbus output, opens the alarm circuit. The alarm circuit is galvanically isolated from the fieldbus segments and input power supplies. The alarm pins at the last unit must be connected together to complete the circuit.


DC Power Considerations for High Availability Applications Using the Fieldbus Power Hub

The available power to a field device depends on the length and resistance characteristics of the fieldbus cable. The formula for the calculations in Table 5 on page 43, which shows the maximum distance for a given load on the Fieldbus Power System, is based on the following assumptions:


Minimum Device Voltage = 9 VDC (Calculations use 9.5 VDC)

Maximum Voltage drop from cable = 18.5VDC



Devices are connected on one end of the cable and the Fieldbus Power Hub is connected on the other end of the cable



When referring to Table 5, remember the Series 2 H1 card requires 12 mA of fieldbus power in simplex mode and an additional 12 mA of fieldbus power (24 mA total) in redundant mode. There are distance columns for applications both with and without segment protectors. The distance associated with the segment protector is reduced due to the possible condition of a short on a spur which would increase the current on the trunk and also reduce the voltage to the other devices.


Table 5 Distance per Load on the Fieldbus Power Hub with and without Segment Protectors

Number of Devices / Load (mA)

Power Supply Load (mA) Maximum Distance without Segment

Protector (meters)

Maximum Distance with

Segment Protector (meters)Series 2 H1

Simplex Series 2 H1 Redundant

1 / 20 32 44 1900 1900

2 / 40 52 64 1900 1900

3 / 60 72 84 1900 1900

4 / 80 92 104 1900 1900

5 / 100 112 124 1900 1900

6 / 120 132 144 1900 1900

7 / 140 152 164 1900 1855

8 / 160 172 184 1900 1695

9 / 180 192 204 1900 1565

10 / 200 212 224 1875 1450

11 / 220 232 244 1720 1350

12 / 240 252 264 1590 1265

13 / 260 272 284 1480 1190

14 / 280 292 304 1380 1120

15 / 300 312 324 1295 1060

16 / 320 332 344 1220 1005

16 / 340 352 364 1155 960

16 / 360 372 384 1090 915


Short Circuit Protection with Segment ProtectorsThe Pepperl+Fuchs Segment Protector connects field devices to the fieldbus segment cable and provides short circuit protection to the segment. Figure 9 shows a Segment Protector for eight devices.

Figure 9 Segment Protector for Eight Devices

1+ 1 1s 2+ 2 2s 3+ 3 3s 4+ 4 4s 5+ 5 5s 6+ 6 6s 7+ 7 7s 8+ 8 8s Ti+ Ti Tis To+To Tos TS

PEPPERL+FUCHS

F2-JBSC-8-CGB

FieldConnex

Off

S1

Spur connections

Trunkconnections

S1terminatorswitch

JumperS to T andGnd to Gnd

Spur connections 1-8 Trunk connections 1-2


Designing an Application for Short Circuit Protection Using a Segment Protector

When designing an application that uses a Segment Protector for short circuit protection, allow an additional 50 mA in the design to give the power supply the additional current capability to support a short circuit in one device (should it occur) and continue to power the segment without interruption. Normally a 1.0 voltage drop (assuming a 20 mA device) occurs across the Segment Protector to the device. An additional voltage drop occurs during a short circuit condition. To prevent devices from dropping off the segment because of reduced voltage, be sure that the application design allows for the voltage drop in both the normal and short circuit condition. Use the following calculation to calculate the short circuit voltage drop to the farthest device:

.050A X (44 ohms/km) X distance in km

The following example calculates the voltage drops on 0.5 km segment to the farthest device:

Normal voltage drop = 1.0 Volt

Short circuit voltage drop =.050A X (44 ohms/km) X.5 km = 1.1 Volts

Total voltage drop = normal voltage drop + short circuit voltage drop = 2.1 volts.

This calculation is based on a design that allows for one short circuit in a running segment. For example, a situation in which an inadvertent shorting of a device occurs during routine replacement in an operating system. The calculation does not allow for multiple short circuit conditions in a new installation that has not been verified with the segment checkout procedure.

Table 5 on page 43 provides the maximum distance when the application includes the Segment Protector.


Installing and Connecting the Fieldbus Power Hub

To install the Fieldbus Motherboard, Power Supply Modules, and Diagnostic Module

1. Attach the top latch of the Fieldbus Motherboard onto the DIN rail and push it into place. Tighten the two DIN rail latching screws until the Motherboard is held securely onto the rail.

2. Plug the Fieldbus Power Supply Modules (FBPS-1.500) and the Diagnostic Module on to the Motherboard. Secure the modules to the Motherboard by depressing the two latching levers on each module.

To connect the Fieldbus Power Hub


1. Connect the primary 24 VDC input to the PRI PWR connector.

2. Connect the secondary 24 VDC input to the SEC PWR connector.

3. Connect the alarm wires and short the alarm pins on the opposite side of the Fieldbus Motherboard. If multiple Motherboards share the same alarm circuitry, short the alarm pins on the last one in the chain.

4. Connect the H1 segment wire to the Host A connector for each segment that is used.

5. Ensure that Host B is not connected.

6. Ensure that the redundant host power switch is On for each segment.

7. Connect each field segment wire to the appropriate terminal on the Motherboard for each segment that is used.

8. If the Fieldbus Power Hub is on the end of each segment, switch the terminator for each segment On.

9. Connect the shield ground connection on the Motherboard with an adequately sized grounding wire to an appropriate grounding location. Ensure that all segment shields are connected to ground at this one location only. Do not connect the shields to ground at the 8-wide carrier shield bar or at any device in the field.


Installing and Connecting the Fieldbus Segment ProtectorRefer to Figure 9 on page 40.

To install and connect a Fieldbus Segment Protector

1. Securely attach the Fieldbus Segment Protector at the desired location. Choose a location that minimizes the length of the spur cables.

2. For the Trunk segment connection: connect the positive (+) segment wire to the positive; connect the negative (-) segment wire to the negative; and connect the segment shield (S) to the S.

3. For each device connection: connect the positive (+) spur wire to the positive, connect the negative (-) spur wire to the negative, and connect the shield wire (S) to the S.

4. The two shorting jumpers must be repositioned so that the Trunk (T) and Spur (S) shields are connected together and not connected to case. Jumper T to S and Gnd to Gnd.

5. If this Segment Protector is at the end of the segment, the terminator switch S1 should be in the On position. If it is not at the end of the segment, ensure that terminator switch S1 is in the Off position.

6. If the segment continues and connects to another Segment Protector, continue the Trunk segment by connecting the Trunk Out connections to the next Segment Protector and proceed with the connections described in steps 2, 3, and 4.

7. For all Segment Protectors, ensure that the two shorting jumpers are repositioned so that the Trunk (T) and Spur (S) shields are connected together and not connected to case. Jumper T to S and Gnd to Gnd.

8. At each device ensure that the shield is isolated and not connected to the device.

9. If this Segment Protector is at the end of the segment, ensure that the terminator switch S1 is in the On position.


Verifying the InstallationAfter the segment is installed with all devices connected, use the segment checkout procedure on page 63. First measure resistance, capacitance, DC voltage, and the AC waveform (steps 1, 2, 4, and 5) with only one of the power supply modules installed. Then, measure DC voltage and the AC waveform (steps 4 and 5) again with both power supply modules installed. Verify that the measured DC voltage allows for the additional voltage drop if a short circuit occurs on one spur.

High Availability Application Examples for the Fieldbus Power Hub

Figure 10 shows an application that uses a redundant pair of Series 2 H1 cards with redundant fieldbus power for both segments and short circuit protection for devices on a long (0.5 km) trunk cable. If a failure occurs on an H1 card, a 24 V power supply, or a fieldbus power supply, the segments continue to operate as expected. A status indication on connected alarms alerts the operator that an error has occurred. It is assumed that the application design follows the criteria specified in “Designing an Application for Short Circuit Protection Using a Segment Protector”. Therefore, if a short occurs when a device is installed or removed from the segment, only that device is affected; the rest of the segment is unchanged.


Figure 10 High Availability Application with 16 Devices Using the Fieldbus Power Hub and Segment Protectors

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

S

Alarm

Diagnostic Bus

PRIPWR

SECPWR

PEPPERL-FUCHS

Fieldbus Power Hub

Fieldbus Motherboard OFF +Segment 1

SOFF +Segment 2

SOFF +Segment 3

SOFF +Segment 4

FieldConnex

Host A

OFF

S --- +

Host BSEG1

ON

S +

Host A

OFF

S --- +

Host BSEG2

ON

S +

Host A

OFF

S --- +

Host BSEG3

ON

S +

Host A

OFF

S --- +

Host BSEG4

ON

S +

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2DMB

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

GND

GND

GND

GND

Txvbo 3x\88 - wxb8m

Tufxup ty w foclex

Lsnrtpm

rupt K serup o 6x TU 81 x buk

sorulx Bxup 02x b2 xul 4- 8m

Ibex ywqv 09x fx q 03-3v TERMINATOR ON OFF

F2-JBSC-8-CGBSegment Protector

PEPPERL+FUCHS FieldConnexTM

Segment Protector

Txvbo 3x\88 - wxb8m

Tufxup ty w foclex

Lsnrtpm






Segment Protector

Port 1 Port 2

Carriershield bar


Alarmjumper


0.5 km Cable

T - OFF

T - ON

Primary24 VDC

Secondary24 VDC

Alarmcontacts

T - ON



Chapter 3 Intrinsically Safe Fieldbus Applications

This chapter provides information about fieldbus applications that provide Intrinsically Safe (IS) power to fieldbus devices located in hazardous areas. The Pepperl+Fuchs FieldConnex® Fieldbus Power Hub and FieldConnex® FieldBarrier provide Intrinsically Safe power for both Intrinsically Safe – entity applications and FISCO (Fieldbus Intrinsically Safe COncept) applications. Refer to the Pepperl+Fuchs (P+F) documentation for additional information on these products.

Ensure that the fieldbus devices and all components used in the application are rated and certified for IS applications.

Warning In any hazardous area installation it is important to read and follow the device manufacturer's design and installation documents. Failure to follow the documentation could result in an unapproved and unsafe application. Additionally, in hazardous locations follow your plant's procedures for making the area safe during installation and maintenance operations.

DC Power Considerations for Intrinsically Safe Applications

The basic IS application uses the Fieldbus Power Hub with the FBPS-1.500 Isolated Power Supply Module to provide power to field devices connected through one or more IS Field Barriers.

The available power to a field device depends on the length and resistance characteristics of the fieldbus cable to each Field Barrier and the output characteristics of the Field Barrier to the field device. The P+F segment calculator tool was used to make the example calculations in Table 6 on page 53. The calculations show the maximum distance for a given load on the Fieldbus Power Hub for applications using

Intrinsically Safe Fieldbus Applications 51

2, 3, and 4 Field Barriers to connect up to 16 field devices. The calculations are based on the following assumptions:


Minimum Voltage at last Barrier = 16 VDC

Minimum Device Voltage = 9 VDC

Maximum Voltage drop from cable to last barrier = 12 VDC

Redundant H1 connected at a load of 24 mA


Ensure that any device load on a spur output from the field barrier is 30 mA or less

Each Barrier spur has a maximum of one device connected.

Barriers and Devices are connected on one end of the cable and the Fieldbus Power Hub is connected on the other end of the cable

Each device is connected on a 10 meter maximum spur cable.

Barriers are inter-connected on a 10 meter maximum trunk cable.




When referring to Table 6, remember the Redundant Series 2 H1 card requires 24 mA of fieldbus power.

The loads listed are the normal loads required by the barriers and devices. However, the numbers take into account the additional current required if the smallest load on one barrier is accidentally shorted (during a maintenance operation) to protect the segment from being affected.

If these assumptions do not properly represent your specific application, it is recommended that a calculation be completed to verify that the segment design adequately meets your process requirements.


Fieldbus Power HubRefer to “Pepperl+Fuchs Fieldbus Power Hub for Redundant Fieldbus Power” on page 39 for information on the Fieldbus Power Hub system.

Table 6 Distance per Load on the Fieldbus Power Hub with Field Barriers

Number of Devices / Load

(mA)

Distance (meters) and Power Supply Load (mA)

Max Distance

with 2 Barriers

Power Supply Load

with 2 Barriers

Max Distance

with 3 Barriers

Power Supply Load with 3

Barriers

Max Distance

with 4 Barriers

Power Supply Load with 4

Barriers

1 / 20 1875 75 1850 103 1575 131

2 / 40 1850 94 1625 123 1400 151

3 / 60 1675 112 1425 143 1250 171

4 / 80 1500 130 1275 161 1125 192

5 / 100 1325 149 1150 180 1025 211

6 / 120 1200 163 1050 198 950 231

7 / 140 1000 184 975 218 875 250

8 / 160 1000 208 900 237 800 267

9 / 180 N/A N/A 825 256 750 288

10 / 200 N/A N/A 775 274 700 307

11 / 220 N/A N/A 725 290 650 325

12 / 240 N/A N/A 725 316 625 346

13 / 260 N/A N/A N/A N/A 600 366

14 / 280 N/A N/A N/A N/A 550 378

15 / 300 N/A N/A N/A N/A 525 395

16 / 320 N/A N/A N/A N/A 525 422

16 / 340 N/A N/A N/A N/A 475 429

16 / 360 N/A N/A N/A N/A 425 433


Field Barrier for Intrinsically Safe Applications in Hazardous Locations

The Field Barrier connects up to four field devices located in hazardous locations to the fieldbus segment and provides short circuit protection to each device. Ensure that any device load on a spur output from the field barrier is 30 mA or less. Figure 11 shows a Field Barrier for four devices.

Figure 11 Field Barrier for Four Devices

Installing and Connecting the Fieldbus Power HubRefer to “Installing and Connecting the Fieldbus Power Hub” on page 46 for information on installing the Motherboard, Power Supply Modules, and Diagnostics Modules and connecting the Fieldbus Power Hub.

10+11 13+1412s 16+1715s 19+18s 20 21sON

OFF

PWR

S1 BUS_

TERM. 1234

143+ 4- 5s 6s 7- 8+1B 2B

Spur connections Trunk connections

S1 terminator switch

Trunk connections 1-2Spur connections 1-4


Installing and Connecting the Field BarrierRefer to Figure 11 on page 54.

To install and connect a Field Barrier

1. Securely attach the Field Barrier at the desired location.

2. For the Trunk segment connection: connect the positive (+) segment wire to the positive, connect the negative (-) segment wire to the negative, and connect the segment shield (S) to the S.

3. Remove the shorting jumpers (1B, 2B) so that the Trunk (S) shields are isolated from, not connected to the Field Barrier case.

4. For each device connection: connect the positive (+) spur wire to the positive, connect the negative (-) spur wire to the negative, and connect the shield wire (S) to the S.

5. The Spur (S) shields must be connected to the Field Barrier case and isolated at the device in the field. The best way to ground the output shields at the barrier is with a mechanical connection through a metal gland or bar at the barrier.

6. If this Field Barrier is at the end of the segment, the terminator switch S1 should be in the On position. If this is not the end of the segment, ensure that the terminator switch S1 is in the Off position.

7. If the segment continues and connects to another Field Barrier, continue the Trunk segment by connecting the Trunk Out connections to the next Field Barrier and proceed with steps 3, 4, and 5.

8. Ensure that the shorting jumpers (1B, 2B) are removed on all Field Barriers, so that the Trunk (S) shields are isolated from not connected to the Field Barrier case.

9. If this Barrier is the end of the segment, ensure that the terminator switch S1 is in the On position.

Verifying the InstallationRefer to “Verifying the Installation” on page 48.


Intrinsically Safe Application ExampleFigure 12 shows an application that uses a redundant pair of Series 2 H1 cards with redundant fieldbus power and intrinsic safety barrier protection for 16 devices on a long (0.5 km) trunk cable. If a failure occurs on an H1 card, a 24 V power supply, or a fieldbus power supply, the segments continue to operate as expected. A status indication on connected alarms alerts the operator that an error has occurred. It is assumed that the application design follows the criteria specified in “DC Power Considerations for Intrinsically Safe Applications” on page 51. Therefore, if a short occurs when a device is installed or removed from the segment, only that device is affected; the rest of the segment is unchanged.

Figure 12 IS Application with 16 Devices Using the Fieldbus Power Hub and Field Barrier

TERMINATORON OFF

F2D0-FB-Ex4

PEPPERL+FUCHS

GND

T - OFF

Field Barrier

TERMINATORON OFF

F2D0-FB-Ex4

PEPPERL+FUCHS

GND

T - OFF

Field Barrier

TERMINATORON OFF

F2D0-FB-Ex4

PEPPERL+FUCHS

GND

T - OFF

Field Barrier

TERMINATORON OFF

F2D0-FB-Ex4

PEPPERL+FUCHS

GND

T - ON

T - ON

Field Barrier

S

Alarm

Diagnostic Bus

PRIPWR

SECPWR

PEPPERL-FUCHS

Fieldbus Power Hub


SOFF +Segment 2

SOFF +Segment 3

SOFF +Segment 4

FieldConnex

Host A

OFF

S --- +

Host BSEG1

ON

S +

Host A

OFF

S --- +

Host BSEG2

ON

S +

Host A

OFF

S --- +

Host BSEG3

ON

S +

Host A

OFF

S --- +

Host BSEG4

ON

S +

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2DMB

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

HD2FBPS-1.500

PWR

ERR

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

GND

Port 1 Port 2

GND

Carriershield bar

Alarmjumper

Alarmcontacts

Primary24 VDC

Secondary24 VDC



0.5 km Cable


Chapter 4 Non-Incendive Fieldbus Applications

This chapter provides information about fieldbus applications that provide Non-Incendive (NI) power to fieldbus devices located in hazardous areas.

The Pepperl+Fuchs FieldConnex® Fieldbus Power Hub and FieldConnex® Segment Protector provide Non-Incendive power for Non-Incendive applications.

Refer to the Pepperl+Fuchs documentation for additional information on these products.

Ensure that the fieldbus devices and all components used in the application are rated and certified for Non-Incendive applications.

Warning In any hazardous area installation it is important to read and follow the device manufacturer's design and installation documents. Failure to follow the documentation could result in an unapproved and unsafe application. Additionally, in hazardous locations follow your plant's procedures for making the area safe during installation and maintenance operations.

DC Power Considerations for Non-Incendive Applications

The basic NI application uses the Fieldbus Power Hub with the FBPS-1.23.500 Isolated Power Supply Module to provide power for field devices connected through one or more Segment Protectors. Other options are available for NI applications:

When all devices are certified for NI applications and rated at 32 volts or above, the FBPS-1.500 Power Supply Module can be substituted for 21 volts. This allows for the longer trunk lengths indicated in “High Availability Fieldbus Applications” on page 27.

When all devices are certified for FNICO (Fieldbus Non-Incendive COncept) Non-Incendive applications and rated at 17.5 volts or above, the FBPS-1.17.500 Power Supply Module can be substituted for 21 volts. This allows for shorter trunk lengths.

An application using the Fieldbus Power Hub and Segment Protector offers non-incendive field wiring outputs to the devices. Therefore, live maintenance at the field device is possible.

The available power to a field device depends on the length and resistance characteristics of the fieldbus cable. The formula for the calculations in Table 7 on

Non-Incendive Fieldbus Applications 57

page 59, which shows the maximum distance for a given load on the Fieldbus Power Hub, are based on the following assumptions:


Each device is certified Non-Incendive at 24 VDC or greater

Minimum Device Voltage = 9 VDC (Calculations use 9.5 VDC)

Maximum Voltage drop from cable = 11.5VDC

Maximum Voltage drop from Segment Protector = 1.0 VDC


Each device is connected on a 10 meter maximum spur cable

Each spur has a maximum of one device connected.


Devices are connected on one end of the cable and the Fieldbus Power Hub is connected on the other end of the cable



When referring to Table 7, remember that the Series 2 H1 card requires 12 mA of fieldbus power in simplex mode and an additional 12 mA of fieldbus power (24 mA total) in redundant mode. The distance associated with the segment protector accounts for the possibility of a short on a spur which would increase the current on the trunk and also reduce the voltage to the other devices.


Fieldbus Power HubUse the Fieldbus Power Hub with the FBPS-1.23.500 Isolated Power Supply Module and the Segment Protector for NI applications. Refer to “Pepperl+Fuchs Fieldbus Power Hub for Redundant Fieldbus Power” on page 39 for information on the Fieldbus Power Hub system. Table 7 provides specifications for the Fieldbus Power Hub with the Isolated Power Supply Module.

Short Circuit Protection with Segment ProtectorsRefer to“Short Circuit Protection with Segment Protectors” on page 44

Installing and Connecting the Fieldbus Power HubFollow the instructions in “Installing and Connecting the Fieldbus Power Hub” on page 46. Be sure to use the FBPS-1.23.500 Power Supply Modules rather than the FBPS-1.500.

Installing and Connecting the Fieldbus Segment ProtectorFollow the instructions in “Installing and Connecting the Fieldbus Segment Protector” on page 47.

Table 7 Fieldbus Power Hub with FBPS-1.23.500 Isolated Power Supply Module Specifications

Fieldbus Power Hub with FBPS-1.23.500 Specification

Input voltage 24 VDC (19.2-35 VDC)

Fieldbus output current – FBPS-1.23.500 500 mA @ 21-23 VDC

Typical power dissipation 2.5 W per segment

Dimensions 22.1 cm. x 24.6 cm. x 16.2 cm. (8.7 in. x 9.7 in. x 6.4 in.)


Alarm contact rating - Diagnostic Module 1 A max @ 50 VDC max


Verifying the InstallationRefer to “Verifying the Installation” on page 48.


Non-Incendive Application ExampleFigure 13 shows an application that uses a redundant pair of Series 2 H1 cards with redundant fieldbus power and short circuit protection for devices on a long (0.5 km) trunk cable. If a failure occurs on an H1 card, a 24 V power supply, or a fieldbus power supply, the segments continue to operate as expected. A status indication on connected alarms alerts the operator that an error has occurred. It is assumed that the application design follows the criteria specified in “DC Power Considerations for Non-Incendive Applications” on page 57. Therefore, if a short occurs when a device is installed or removed from the segment, only that device is affected; the rest of the segment is unchanged.

Figure 13 NI Application with 16 Devices Using the Fieldbus Power Hub and Segment Protectors

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

Series 2

FieldbusH1

Power/Active

Error

Port 1

Port 2

S

Alarm

Diagnostic Bus

PRIPWR

SECPWR

PEPPERL-FUCHS

Fieldbus Power Hub


SOFF +Segment 2

SOFF +Segment 3

SOFF +Segment 4

FieldConnex

Host A

OFF

S --- +

Host BSEG1

ON

S +

Host A

OFF

S --- +

Host BSEG2

ON

S +

Host A

OFF

S --- +

Host BSEG3

ON

S +

Host A

OFF

S --- +

Host BSEG4

ON

S +

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2DMB

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

HD2FBPS-

1.23.500

PWR

ERR

GND

GND

GND

GND

Txvbo 3x\88 - wxb8m

Tufxup ty w foclex

Lsnrtpm






Segment Protector

Txvbo 3x\88 - wxb8m

Tufxup ty w foclex

Lsnrtpm






Segment Protector

Port 1 Port 2

Carriershield bar


Alarmjumper


0.5 km Cable

T - OFF

T - ON

Primary24 VDC

Secondary24 VDC

Alarmcontacts

T - ON



Appendix A Fieldbus Segment Checkout Procedure

Use this procedure to check each segment for proper power, grounding, and isolation before you commission field devices on the segment. Record the readings for steps 1-5 on the Fieldbus Segment Checkout Form on page 69. Make one copy of the form for each segment that you are checking.

ToolsYou will need the following tools to perform the segment checkout procedure:

Fluke 123 or 124 Digital Scope Meter or equivalent scope with resistance, DC voltage, and capacitance measurement capability. (Most capacitance meters measure components only and will not provide the expected results when measuring a complete segment.)

Small screwdriver

Fieldbus Segment Checkout form (on page 69)

Checkout ProcedureBefore performing the checkout procedure:

Ensure that you have the correct tools to perform the procedure. Refer to the previous topic for a list of the required tools.

Ensure that the field wiring is completed and properly terminated and that all field devices are attached.

Remove the Fieldbus segment cable (+, -, and shield) at the connector locations from the fieldbus power supply.

Remove only the connector to the field wiring; it is not necessary to remove any connector to the H1 card. Removing the connector to the field wiring isolates the field wiring from the H1 card and power supply, isolates the shield from ground, and enables you to make the resistance and capacitance measurements in the checkout procedure. If your field wiring connections differ from the connections described here, isolate the field wiring from both the H1 card and the power supply, and isolate the shield from ground.

Important Make sure that your bare hands do not come in contact with meter leads or segment wiring. The body acts as capacitor and body contact with leads or wiring could result in false readings.

Fieldbus Segment Checkout Procedure 63

Step 1: Measure resistance on the H1 segment conductors at the removed connector coming in from the field.

Measure resistance from the: Expected result

+ signal conductor to - signal conductor > 50 K ohms 1 (increasing)

1. This value will change due to the capacitor charging in the termination RC circuit and the capacitancein the fieldbus cables.

+ signal conductor to drain/shield wire open circuit >20 M

- signal conductor to drain/shield wire open circuit > 20 M

+ signal conductor to instrument ground bar open circuit > 20 M

- signal conductor to instrument ground bar open circuit > 20 M

drain/shield wire to instrument ground bar open circuit > 20 M

Step 2: Measure capacitance on the H1 segment conductors at the removed connector coming in from the field.

Measure capacitance from the: Expected result

+ signal conductor to - signal conductor 1 µF (0.80 to 1.20 µF acceptable)2

2. A reading of <.5 µF indicates no terminator on the segment. A reading of a nominal 2 µF indicates asecond terminator on the segment. The acceptable values assume that the power supply terminator isused as the second terminator and only one additional terminator is connected in the field. Otherwise,the expected result would be 2 µF. Note: The values for this measurement will be invalid on thePepperl+Fuchs FieldConnex® Field Barrier (for I.S. applications).

+ signal conductor to drain/shield wire < 300 nF

- signal conductor to drain/shield wire < 300 nF

+ signal conductor to instrument ground bar < 300 nF3

3. An actual reading that is much greater or varies in a capacitor charging manner to a high capacitancevalue (>1 µF) indicates a poor quality noisy ground on the shield ground bar. Be sure to correct thisground problem to prevent communication errors on the fieldbus segment. A reading of 300 nF indicatesnoise on the ground system. Field data has shown that readings of up to 500 nF can be acceptable pro-viding the fieldbus signal waveform and voltage compare to that shown in Figure 14.

- signal conductor to instrument ground bar < 300 nF3

drain/shield wire to instrument ground bar < 300 nF3


Step 3: Verify the terminator switch.

Procedure Expected Result

Verify if the power supply has a terminator switch. Switch On or Off depending upon application.

2 terminators total per segment

Verify if the device connection block has a terminator switch. Switch On or Off depending upon application.

2 terminators total per segment

Step 4: Measure DC voltage at the connector going to the field.


Reconnect the previously removed terminal block connectors to the power supply. Tug on the wire to verify that wiring at the connectors is secure.

Measure the output DC voltage at the power supply terminals and verify that the voltage is appropriate for the fieldbus power supply installed.

Relcom Fieldbus Power System

P+F Fieldbus Power Hub

25-28 VDC

28-30 VDC, 21-23 VDC, or 15-17 VDC,

Step 5: Measure the AC waveform at the connector going to the field.


Set the scope to AC, 200 mV/division, 10 micro seconds/division for best results and press HOLD to capture the waveform.

500 mV and 900 mV peak to peak

Verify the waveform against the expected waveform shown in Figure 14. Note the differences in the signals with 1 terminator (Figure 15) and with 3 terminators (Figure 16).



Figure 14 shows a waveform with two terminators and a 1000 feet of cable. This is the expected waveform.

Figure 14 Waveform with Two Terminators and 1000 ft Cable

800 mV

Figure 15 shows a waveform with one terminator and a 1000 feet of cable.

.

Figure 15 Waveform with One Terminator and 1000 ft Cable

1400 mV


Figure 16 shows a waveform with three terminators and a 1000 feet of cable.

Figure 16 Waveform with Three Terminators and 1000 ft Cable

650 mV


Fieldbus Segment Checkout FormCompany/Location...........................................................................Unit/Description..............................................

Controller No.............................................................................................Fieldbus Card No...........................Port No...............

Technician................................................................................................................................ Pass..............................Fail.........................

Date......................................................................................

Step 1: Resistance measurement at the H1 segment conductors coming in from the field

(+) to (-) signal Expected = > 50 Kohm (increasing) Actual =.........................................

(+) to shield Expected = open circuit >20 M Actual =.........................................

(-) to shield Expected = open circuit > 20 M Actual =.........................................

(+) to ground bar Expected = open circuit > 20 M Actual =.........................................

(-) to ground bar Expected = open circuit > 20 M Actual =.........................................

Shield to ground bar Expected = open circuit > 20 M Actual =.........................................

Step 2: Capacitance measurement at the H1 segment conductors coming in from the field

(+) to (-) signal Expected = 1 µF( ± 20%) Actual =.........................................

(+) to shield Expected = < 300 nF Actual =.........................................

(-) to shield Expected = < 300 nF Actual =.........................................

(+) to ground bar Expected = < 300 nF Actual =.........................................

(-) to ground bar Expected = < 300 nF Actual =.........................................

Shield to ground bar Expected = < 300 nF Actual =.........................................

Step 3: Terminator switch verification

Terminator (Power Supply)Terminator (Connection block)

Expected = Application dependentExpected = Application dependent

Actual = On.......Off......N/A..........Actual = On.......Off......N/A..........

Step 4: DC voltage measurement at power supply

(+) to (-) signal Expected = 25-28 VDC for Relcom Fieldbus Power Supply or 28-30 VDC for P+F Fieldbus Power Hub

Actual =.........................................

Step 5: AC measurement (waveform) power supply

(+) to (-) signal Expected = 500 - 900 mV pp Actual =.........................................



MTL Power Supplies for Intrinsically Safe Fieldbus Applications 71

Appendix B MTL Power Supplies for Intrinsically Safe Fieldbus Applications

The MTL9121 IS and the MTL9122 IS Power Supplies can be used to power field devices in hazardous areas for FISCO (Fieldbus Intrinsically Safe COncept) IS applications. The MTL9121 IS power supply can power up to five (5) 20 mA devices in Gas Group IIC and the MTL9122 IS power supply can power up to twelve (12), 20 mA devices in Gas Group IIB. Ensure that the fieldbus devices and all components used in the application are rated and certified for IS applications in these Gas Groups. With the exception of the IS power supplies, many fieldbus components (H1 card, terminators, and wiring components) are the same for IS and non-IS installations.

The MTL9122 IS and 9121 IS power supplies have a host side terminator switch and a host side power switch on the front of the unit. The terminator on the IS side is permanently connected. Both power supplies are fieldbus repeater power supplies that repeat the fieldbus signal from the field to the host and power both the fieldbus segment and the host.

This chapter addresses FISCO IS applications with devices in Class I Division 1 or Zone 1 EExib locations. If a field device in your application is not certified for FISCO IS, an MTL Fieldbus Entity Spur Adapter can be used. Similarly, if a field device in your application is located in a Zone 0 Hazardous area, an MTL Fieldbus IS EExia Spur Adapter can be used.

Refer to the MTL documentation for additional information on their products.

Note The Series 2 H1 card requires a power supply for each port in IS applications. The MTL9121 and 9122 IS Power Supplies can provide this power.

DC Power Considerations for IS Power ApplicationsThe available current to power a field device depends on the length and resistance characteristics of the fieldbus cable. Table 8 shows the maximum distances in meters for a given load on the 9121 IS power supply and Table 9 shows the same information for the 9122 IS power supply. The following assumptions are made:

MTL9121 IS Power Supply voltage is 12 VDC at 110 mA at 0º C

MTL9122 IS Power Supply Voltage is 12.8 VDC at 250 mA at 0ºC

Minimum Device Voltage = 9.5 VDC (.5V device margin)


Fieldbus Type A 18 AWG cable @ 22 ohms/km is used

Cable Resistance (Type A) = 22 Ohms/km x 2 (loop) = 44 Ohms/ km

Devices are connected on one end of the cable and the fieldbus power supply is connected on the other end of the cable


There will be different restrictions and limitations on your segment if these assumptions do not hold for your segment layout. If your devices average more than 20 mA per device, reduce the maximum cable length indicated in the table for that number of devices or reduce the number of devices on that segment.

Table 8 Distance per Load on 9121 IS Power Supply

Number of fielddevices

Power Supply Load (mA)

Maximum Distance(meters)

1 20 1000

2 40 1000

3 60 940

4 80 710

5 100 560

5 110 510


Warning In any hazardous area installation it is important to read and follow the device manufacturer's design and installation documents. Failure to follow the documentation could result in an unapproved and unsafe application.Additionally, in hazardous locations follow your plant's procedures for making the area safe during installation and maintenance operations.

Host PowerBoth the MTL9121 IS and 9122 IS power supplies can provide power to the host in the safe area. The supplies are rated at 30 mA and are capable of providing host power for either the simplex or redundant Series 2 H1 cards. The distance between the host and the IS power supply can exceed 1000 meters.

Table 9 Distance per Load on 9122 IS Power Supply

Number of field devices



1 20 1900

2 40 1870

3 60 1250

4 80 930

5 100 750

6 120 620

7 140 530

8 160 460

9 180 410

10 200 370

11 220 340

12 240 310

12 250 300


Installing the MTL Intrinsically Safe Power SuppliesThe MTL9121 and 9122 Intrinsically Safe power supplies install on a DIN Rail and are powered by a typical bulk 24 VDC power supply. The IS power supplies connect to the segment wiring to power the fieldbus devices that are not self-powered. On the top of each supply is a 3 pin connector for connection to the safe area host fieldbus and a 3 pin connector for connection to the safe area 24 V power. On the bottom of each supply is a 3 pin connector for connection to the IS area. The following figure shows the connectors.

Figure 17 Connectors on the MTL 9122 IS Power Supply

9122-IS

Power Host

IS

+1

+3

-2

+6

S5

-4

8S

7

+9

-

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

SafeArea

HazardousArea


Note The hazardous area wiring must remain separated from the safe area wiring. This includes the shield drain wires as they must be separate wires all the way to the ground connection.

To wire the safe area

The 24 VDC power input and host connectors are on the top of the power supply.

1. Connect the primary power supply positive (+) wire to pin 1.

2. Connect the primary power negative (-) 24 V return to pin 2.

3. Connect a secondary power supply positive (optional) (+) wire to pin 3.

If using a primary and secondary 24 VDC power supply, be sure to connect the power supply returns together.

4. Connect the host segment negative (-) to pin 4.

5. Connect the host segment shield to pin 5.

6. Connect the host segment positive (+) to pin 6.

To wire the hazardous area

The IS connector is on the bottom of the power supply.

1. Connect the IS area fieldbus segment positive (+) wire to pin 7.

2. Connect the IS area fieldbus segment shield (S) wire to pin 8 and to a shield ground connection.

3. Connect the IS area fieldbus segment negative (-) wire to pin 9.


SwitchesThe power supplies have a switchable host side terminator and host power switch. (The field side terminator is permanently connected.)

Host terminator ON is the upper position; host terminator OFF is the lower position

Host power ON is the upper position; host power OFF is the lower position

Figure 18 Terminator and Power Switches

The segment layout determines the location of the terminator and if the switchable terminator on the power supply is used. Be sure that two terminators are on the host side and two terminators are on the fieldbus side of each power supply. Similarly, the use of the switchable power capability is dependent upon the needs of the particular IS application. The Series 2 H1 card requires power; therefore, the host power switch should be ON. If more than one IS power supply is connected to the same segment (as in Figure 19), host power should be provided by one unit only. Be sure the additional unit’s host power switches are in the OFF position.

Host

Host Pwr

OnT


Intrinsically Safe Application Example with an MTL9122The following figure shows an IS application that allows up to 16 devices on the segment. The maximum cable length on the MTL9122 portion of the segment is 1900 meters and the maximum total cable length per segment is 1900 meters.

Figure 19 16 IS Devices on a Segment

Note Ensure that all components are rated and certified for IS applications.

MB8Megablock

MB8Megablock

H1H1

Red24 Vpowersupply

9122-IS

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

9122-IS

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

9122-IS

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

24 V

+ -

T=ON

HP=ON

T=ON T=ON

HP=OFFHP=OFF

T=ON

HP=OFF

T=ON

HP=ON

Carriershield bar

Terminator

RedundantSeries 2H1 cards


0.4 Km cablePort 1 Port 2

Ground

Terminator





Appendix C MTL Power Supplies for Non-Incendive Fieldbus Applications

The MTL9111-NI and the MTL9112-NI Power Supplies can be used to power field devices in Zone 2 / Division 2 hazardous areas for conventional Non-Incendive and FNICO (Fieldbus Non-Incendive COncept) applications. The MTL9111-NI power supply can power up to nine (9) 20 mA devices in Gas Group IIC/Groups A-D and the MTL9112-NI power supply can power up to sixteen (16), 20 mA devices in Gas Group IIB/Groups C and D. Ensure that the fieldbus devices and all components used in the application are rated and certified for Non-Incendive applications in these Gas Groups. With the exception of NI power supplies, many fieldbus components (H1 card, terminators, and wiring components) are the same for Non-Incendive installations and other types of fieldbus installations.

The MTL9111-NI and 9112-NI power supplies can be used in either of the following applications:

Conventional Non-Incendive circuits. For Non-Incendive/ExnL applications in which the wiring is energy limited; cable parameters must be considered.

FNICO circuits in which cable parameter calculations are not required. FNICO is similar to FISCO and is described in MTL Application Note AN9027.

The MTL9111-NI and 9112-NI power supplies have a host side terminator switch and a host side power switch on the front of the unit. The terminator on the field side is permanently connected. Both power supplies are fieldbus repeater power supplies that repeat the fieldbus signal from the field to the host and power both the fieldbus segment and the host.

Refer to the MTL documentation for additional information on their products.

Note The Series 2 H1 card requires a power supply for each port in Non-Incendive applications. The MTL9111-NI and 9112-NI Power Supplies can provide this power.

MTL Power Supplies for Non-Incendive Fieldbus Applications 79

DC Power Considerations for Non-Incendive Power Applications

The available current to power a field device depends on the length and resistance characteristics of the fieldbus cable. Table 10 shows the maximum distances in meters for a given load on the 9111-NI power supply and Table 11 shows the same information for the 9112-NI power supply. The following assumptions are made:

MTL9111-NI Power Supply voltage is 12 VDC at 180 mA at 0ºC

MTL9112-NI Power Supply Voltage is 12.8 VDC at 320 mA at 0ºC

Minimum Device Voltage = 9.5 VDC (.5V device margin)


Fieldbus Type A 18 AWG cable @ 22 ohms/km is used

Cable Resistance (Type A) = 22 Ohms/km x 2 (loop) = 44 Ohms/ km

Devices are connected on one end of the cable and the fieldbus power supply is connected on the other end of the cable


There will be different restrictions and limitations on your segment if these assumptions do not hold for your segment layout. If your devices average more than 20 mA per device, reduce the maximum cable length indicated in the table for that number of devices or reduce the number of devices on that segment.

Table 10 Distance per Load on 9111-NI Power Supply

Number of fielddevices



1 20 1000

2 40 1000

3 60 940

4 80 710

5 100 560

6 120 470

7 140 400

8 160 350

9 180 310


Warning In any hazardous area installation it is important to read and follow the device manufacturer's design and installation documents. Failure to follow the documentation could result in an unapproved and unsafe application.Additionally, in hazardous locations follow your plant's procedures for making the area safe during installation and maintenance operations.

Table 11 Distance per Load on the 9112-NI Power Supply

Number of field devices



1 20 1900

2 40 1870

3 60 1250

4 80 930

5 100 750

6 120 620

7 140 530

8 160 460

9 180 410

10 200 370

11 220 340

12 240 310

13 260 280

14 280 260

15 300 250

16 320 230


Host PowerBoth the MTL9111-NI and 9112-NI power supplies can provide power to the host in the safe area. The supplies are rated at 30 mA and are capable of providing host power for either the simplex or redundant Series 2 H1 cards. The distance between the host and the NI power supply can exceed 1000 meters.

Installing the Non-Incendive Power SuppliesThe MTL9111-NI and 9112-NI power supplies install on a DIN Rail and are powered by a typical bulk 24 VDC power supply. The power supplies connect to the segment wiring to power the fieldbus devices that are not self-powered. On the top of each supply is a 3 pin connector for connection to the safe area host fieldbus and a 3 pin connector for connection to the safe area 24 V power. On the bottom of each supply is a 3 pin connector for connection to the NI area. The following figure shows the connectors.


Figure 20 Connectors on the MTL 9111 and 9112-NI Power Supplies

Note The hazardous area wiring must remain separated from the safe area wiring. This includes the shield drain wires as they must be separate wires all the way to the ground connection.

9111-NI

Power Host

NI

+1

+3

-2

+6

S5

-4

8S

7

+9

-

Host

Host Pwr

OnT

NI

T

Pwr

Fault

Host

IS

Power Supply - IIB

SafeArea

HazardousArea


To wire the safe area

The 24 VDC power input and host connectors are on the top of the power supply.

1. Connect the primary power supply positive (+) wire to pin 1.

2. Connect the primary power negative (-) 24 V return to pin 2.

3. Connect a secondary power supply positive (optional) (+) wire to pin 3.

If using a primary and secondary 24 VDC power supply, be sure to connect the power supply returns together.

4. Connect the host segment negative (-) to pin 4.

5. Connect the host segment shield to pin 5.

6. Connect the host segment positive (+)

To wire the hazardous area

The NI field connector is on the bottom of the power supply.

1. Connect the NI area fieldbus segment positive (+) wire to pin 7.

2. Connect the NI area fieldbus segment shield (S) wire to pin 8 and to a shield ground connection.

3. Connect the NI area fieldbus segment negative (-) wire to pin 9.

SwitchesThe power supplies have a switchable host side terminator and host power switch. (The field side terminator is permanently connected.)

Host terminator ON is the upper position; host terminator OFF is the lower position

Host power ON is the upper position; host power OFF is the lower position


Figure 21 Terminator and Power Switches

The segment layout determines the location of the terminator and if the switchable terminator on the power supply is used. Be sure that two terminators are on the host side and two terminators are on the fieldbus side of each power supply. Similarly, the use of the switchable power capability is dependent upon the needs of the particular NI application. The Series 2 H1 card requires power; therefore, the host power switch should be ON. If more than one NI power supply is connected to the same segment (as in Figure 22), host power should be provided by one unit only. Be sure the additional unit’s host power switches are in the OFF position.

Non-Incendive Application ExamplesThe following two figures show the use of the MTL9111-NI and MTL9112-NI power supplies in NI applications. If a Megablock with short circuit protection is used, the number of devices and total cable length may have to be reduced to ensure that only a single device is affected if a short circuit condition occurs.

Application Example with two MTL9111-NI Power Supplies

The following figure shows an NI application that uses two MTL9111-NI power supplies to power up to 16 devices on the segment. The maximum cable length on the MTL9111-NI portion of the segment is 1900 meters and the maximum total cable length per segment is 1900 meters.

Host

Host Pwr

OnT


Figure 22 16 Non-Incendive Devices on a Segment with two MTL9111-NI Power Supplies

Note Ensure that all components are rated and certified for Non-Incendive applications.

Application Example with one MTL9112-NI Power Supply

The following figure shows an NI application that uses one MTL9112-NI power supply to power up to 16 devices on the segment. The maximum cable length on the MTL9112-NI portion of the segment is 1900 meters and the maximum total cable length per segment is 1900 meters.

MB8-SGMegablock

MB8-SGMegablock

H1H1

Red24 V

powersupply

9111-NI

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

9111-NI

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

9111-NI

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

IS

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

24 V

+ -

T=ON

HP=ON

T=ON T=ON

HP=OFFHP=OFF

T=ON

HP=OFF

T=ON

HP=ON

Carriershield bar

Terminator



0.3 Km cablePort 1 Port 2

Ground

Terminator




Figure 23 16 Non-Incendive Devices on a Segment with one MTL9112-NI Power Supply

Note Ensure that all components are rated and certified for Non-Incendive applications.

MB8 - SGMegablock

MB8 - SGMegablock

H1H1

Red24 V

powersupply

9112-NI

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

NI

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

9112-NI

Power Host

+1

+3

-2

+6

S5

-4

Host

Host Pwr

OnT

NI

T

Pwr

Fault

Host

IS

Power Supply - IIB

8S

7

+9

-

24 V

+ -

T=ON

HP=ON

T=ON

HP=ON

Carriershield bar


Terminator


0.2 Km cablePort 1

Port 2

Ground

Terminator





Troubleshooting 89

Appendix D Troubleshooting

This section provides information on how to use the DeltaV Explorer, Diagnostics and the H1 card to troubleshoot fieldbus applications and provides information on troubleshooting common fieldbus problems. Refer to Books Online for information on troubleshooting fieldbus loops.

Troubleshooting with the H1 CardThe H1 card provides a great deal of information for troubleshooting fieldbus segments. Once communication has been established, use the LEDs to monitor communication between the card and fieldbus devices. The bottom two LEDs on the H1 card reflect communication between the port and fieldbus devices on that port.

Table 12 H1 Fieldbus Card LEDs

LED Correct Operating Condition

Fault Indicator Probable Cause Corrective Action

Green Power

Green Power/ Active

H1 – On

Series 2 Simplex H1- On

Series 2 Redundant H1 Active – On

Standby – Flashing

Off H1 card does not have power.

1. Verify that H1 card is receiving power.

2. Replace H1 card if it has power.

Red - Error Off On H1 card is not communicating with the DeltaV controller.

1. Be sure that other I/O cards are communicating with the controller.

2. If no I/O cards are communicating with the controller, replace the controller or replace the H1 card.

Yellow - Ports 1 and 2

On Off Port is disabled or the H1 card is not communicating with any devices on the port.

1. Enable and download the port.

2. Create and download configuration.

Flashing Yellow (device configuration not downloaded)

No fieldbus configuration on the segment.

Create and download configuration.

Flashing Yellow (device configuration downloaded)

Port is communicating, but problems exist with a device.

Check communication statistics for each fieldbus device on the port.


Use the DeltaV Explorer to enable and download the port and Control Studio to create and download configuration. A solid yellow LED indicates that good communication exists between the port and devices on that port and that at least one function block is configured on the segment. Remember that each fieldbus device should contain at a minimum either an AI or AO function block.

Troubleshooting with the DeltaV ExplorerIndicators in the DeltaV Explorer tell you if an H1 port or a fieldbus device needs to be downloaded or commissioned.

The blue triangle ( ) on an H1 port or device means that the port or device needs to be downloaded. Select the port or device, click the right mouse button, and then select Download to open a dialog box that lists the fieldbus configuration information to be downloaded.

The yellow exclamation point ( )on a device means that the device needs to be commissioned. To commission the device, select it from the Decommissioned device list and drag it to either the port or device placeholder.

Troubleshooting 91

Troubleshooting with DeltaV DiagnosticsRemember that the Diagnostics online help contains descriptions of all fieldbus parameter values. To access the descriptions, select the parameter, click the right mouse button, and select What's This.

Use DeltaV Diagnostics to:

Determine if the device is commissioned

Check integrity on the H1 card, backup link master device, and ports

Check overall port statistics and communication statistics for each device

Open DeltaV Diagnostics and click View | Details or View | Compare to quickly see the device state. If the device is not commissioned, open the DeltaV Explorer and commission the device. Then, download the port and the device. If the device is commissioned, check integrity on the port and then check port and device communication statistics.

Port Integrity

Typically, integrity problems originate below the node and then "bubble up" to the node level. Integrity problems are indicated by the overlay. Start by looking for a controller with the overlay and if found, expand the controller hierarchy until you find the root cause of the problem. If a fieldbus card has an integrity problem, expand the card to see which port has the problem. Select each port and look at the port's status. Possible port status values are:

Good — good basic communications with all devices on this port.

Link Error — possible card problem. Reseat the H1 card to verify the card's self-test. If the problem persists, replace the H1 card, and notify Technical Support.

Duplicate Address on Link — another device is currently communicating at this port's address.

No Communications on Link.

H1 Card Problem — Reseat the H1 card to verify the card's self-test. If the problem persists, replace the H1 card, and notify Technical Support.

One or more function block problems on link or device problems — expand the port and check the state of each fieldbus device on the port. Any state other than


Commissioned indicates a potential problem with that fieldbus device. Refer to the DeltaV Explorer help for assistance on commissioning fieldbus devices.

A configuration error indicated by the device state "Device Class Mismatch" — a backup link master is functioning as a basic device or a basic device is functioning as a link master device.

A download error indicated by the device state "Schedule Download Failure" — the Link Active Scheduler's (LAS) download of the schedule to this device failed.

Port Communication Statistics

The Port Statistics command provides a broad view of communication activity on the port. Click the right mouse button on the port and select Port Statistics. In the Port Statistics dialog look for:

Retries Total Dll Retries is the total number of data link packets that the H1 card had to retry. If this statistic is steadily increasing, check the communication statistics for each device to see which device is causing the problem. To check communication statistics on a device, click the right mouse button on the device and select Display Communication Statistics. The number of retries to a fieldbus device generally should be much less then 1% of the total requests sent to the device. If this is not the case, either the device is bad or there is a segment problem.

Invalid responses Total Invalid Responses is the total number of fieldbus requests that failed due to a fieldbus device returning an error. If this statistic is steadily increasing, check the communication statistics for each device to see which device is causing the problem. To check communication statistics on a device, click the right mouse button on the device and select Display Communication Statistics.

Stack errors Total Local Stack Errors is the total number of fieldbus request that failed because the local communication stack returned a response that indicated an error. The H1 card might need to be replaced if this statistic is steadily increasing. Total Stack Rejected Request is the total number of fieldbus requests that failed because the local communication stack did not accept the request. The H1 card might need to be replaced if this statistic is steadily increasing.

Timeouts Total Request TimeOut is the total number of fieldbus request that failed because the fieldbus device did not return a response. If this statistic is steadily increasing, check the communication statistics for each device to see which device is causing the problem. To check communication statistics on a device, click the right mouse button on the device and select Display Communication Statistics.

Troubleshooting 93

Tip Clicking the Reset Stats button resets all values to 0 and makes it easier to read the statistics. Click the Help button on any of the Port Statistics dialog boxes for information on the status values.

Next, look at detailed port statistics. Click the right mouse button on the port and select Display Port Detail Statistics. The FMS prefix in some of the detailed port statistics refers to the Fieldbus Message Specification services. These services allow user applications to send messages to each other across the fieldbus using a standard set of message formats. The SM prefix refers to System Management. System Management handles many functions on the fieldbus including automatically assigning fieldbus device addresses and searching for tags. In the Detailed Port Statistics dialog look for:

Identifies FMS Identifies is the number of fieldbus FMS (Fieldbus Message Service) identify requests that were sent on this port. SM Identifies is the number of fieldbus requests that were sent to identify a field device. This request is sent whenever a device has been attached to this port or changed addresses. If this statistic is incrementing after all field devices on this port have been commissioned, either a segment or a field device problem could exist. To isolate the problem, view the communication statistic on each field device on this port.

Initiates FMS Initiates is the number of fieldbus connection requests that were sent on this port. If this statistic steadily increments after all devices are commissioned and downloaded, either the fieldbus segment is noisy or a problem exists with a fieldbus device. To isolate the problem, check the communication statistics on each fieldbus device attached to this port. To check communication statistics on a device, click the right mouse button on the device, and select Display Communication Statistics.

Aborts FMS Aborts is the number of fieldbus disconnection requests that were sent on this port. If this statistic steadily increments after all devices have been commissioned and downloaded, there could be a problem with a fieldbus device or a noisy segment. To isolate the problem, check the communication statistics on each fieldbus device attached to this port. To check communication statistics on a device, click the right mouse button on the device, and select Display Communication Statistics.

Device Communication Statistics

Finally, look at communication statistics for each device. Click the right mouse button on each device, select Display Communication Statistics, and look for:

Aborts received and sent AbortsRxd is the total number of disconnects received from the function blocks in this device. If this statistic is steadily increasing for this field device only, the device could have a problem. If this


statistic is steadily increasing with several field devices, a segment problem could exist. AbortsSent is the total number of disconnects sent to the function blocks in this device. If this statistic is steadily increasing with this field device only, the field device could have a problem. If this statistic is steadily increasing with several field devices, a segment problem could exist.

Initiates received and sent InitsSent is the total number of connects sent to the function blocks in this device. If this statistic is steadily increasing for this field device only, the field device could have a problem. If this statistic is steadily increasing for several field devices, a segment problem could exist.

Pcr Timeouts PcrTimeoutsRxd is the total number of fieldbus requests sent to the function blocks that failed because the field device did not return a response. The device might have a problem, if this statistic is steadily increasing.

Livelist appearances — NumLiveListAppearances is the number of times the device left the segment and was brought back online. If this statistic is incrementing, there is either a problem with this device, or a segment problem.

Troubleshooting 95

Troubleshooting Common Fieldbus Problems

Device or Segment Error

The device's Resource and Transducer blocks are good starting places for diagnosing device problems. Open DeltaV Explorer, select the Resource or Transducer block for the device, and view the status and mode. The status should be clear, with no errors and the mode should be AUTO. Refer to the device documentation for more information.

Next use DeltaV Diagnostics.

1. Click Start | DeltaV | Operator | Diagnostics to open DeltaV Diagnostics.Typically, integrity problems originate below the node and then "bubble up" to

the node level. In DeltaV Diagnostics, integrity problems are indicated by the overlay. Expand the Control Network hierarchy in the left pane of DeltaV

Diagnostics and look for any instances of the overlaid over a node or subsystem.

2. Look for a controller with this overlay and if you find one:

3. Expand the controller hierarchy until you find the root cause of the problem. The problem could be improper wiring causing noise if:• There is a communication error on the device.

• The H1 card port shows bad integrity.

Diagnose the Problem with an Oscilloscope

1. Connect an oscilloscope to the segment across the positive and negative leads.

2. Take a snapshot of the signal to determine the noise level.The actual signal amplitude should be between 0.5 and 0.9 V peak to peak. The noise should be less than 75 mV peak to peak.

3. Take the noise measurement at several different points on the segment such as the H1 card, the power supply, the field junction box, and at any of the field devices.If the signal magnitude and noise exceed the ranges listed above, fix the field wiring and cable shielding.


To fix field wiring

1. Ground the shield only in one place, preferably the DeltaV system cabinet. Use shielded, twisted-pair cable.

2. Cut and tape the shield inside the instrument housing to prevent the shield from contacting the instrument housing and possibly causing a ground loop.

3. Wire all spurs in parallel (individually or as a group in a junction box, including the shield). If the wiring between the H1 card and the power supply uses untwisted, unshielded power cable, excessive noise can occur.

4. Continue the twisted, shielded pair all the way back to the H1 card and ground the shield at the ground bus bar on the 8-wide I/O carrier.

5. Check all junction boxes and tape or tie into place any exposed shielding or drain to ensure that they do not become grounded to the junction box.

The H1 Card is not Communicating with the DeltaV System

If the ports are enabled but you cannot see devices with DeltaV Explorer or Diagnostics, the H1 card may not be functioning properly. Be sure to allow enough time for a newly installed H1 card to go through a self-check and establish communication with the devices on the ports. Use the following list to verify that the H1 card initializes properly:

Plug in – green power light and red error light ON.

10 – 12 seconds later, the red error light goes OFF. The green power LED stays ON.

About 5 seconds later, both port lights flash then go OFF.

About 5 seconds later, both port lights begin flashing.

About 15 seconds later, port 1 light comes ON solid.

About 15 seconds later, port 2 light comes ON solid.

Next, look at the LEDs on the front of the card.

1. Check the red fault indicator LED on the H1 card.If it is lit, it is possible that there are problems with the DeltaV system and the H1 card may have failed.

Troubleshooting 97

2. Check the port LED on the H1 card.The LED should be solid yellow. If the LED is:• Off it is possible that the port is not configured or not enabled

• Flashing it is possible that there is no configuration on the segment.

Put the H1 card in other slots and see if the card receives power in that slot and powers up.

If the card will not power up or communicate at all, verify that the H1 card does not work by replacing the card with a card that you know works.

Check the Port and Segment Configuration

If the port LED is:

Off it is possible that the port is not enabled and cannot talk to the device. All ports must be configured, enabled, and downloaded, before they can function.

Flashing it is possible that no configuration exists for the fieldbus devices. Fieldbus devices must contain a valid configuration before they can work. Each fieldbus device should contain at a minimum either an AI or AO function block.

To enable the port

1. Open the DeltaV Explorer.

2. Expand the I/O subsystem and navigate to the fieldbus port.

3. Select the port, click the right mouse button, and select Properties.

4. Enable the port.

5. Download the port.

To add configuration

1. Open Control Studio and create the configuration for the devices.

2. Download the devices.


Communication Error or Incorrect Communication

Symptoms that you might see in Diagnostics such as communication errors, commissioning failures, commissioned devices transitioning to decommissioned or disappearing and reappearing on the segment can be caused by:

Improper firmware revision for the H1 card. Run the DeltaV Controller Upgrade Utility to upgrade the controller and correct this problem.Click Start | All Programs | DeltaV | Installation | Controller Upgrade Utility and follow the instructions to upgrade I/O and controllers.

Terminator switches set incorrectly. Correct the termination. Remember that there must be only two terminators per segment.

Improper wiring or incorrectly installed terminators. Correct the wiring and termination.

• Ground the shield only in one place, preferably the DeltaV system cabinet. Use shielded, twisted-pair cable.

• Cut and tape the shield inside the instrument housing to prevent the shield from contacting the instrument housing and possibly causing a ground loop.

• Wire all spurs in parallel (individually or as a group in a junction box, including the shield). If the wiring between the H1 card and the power supply uses untwisted, unshielded power cable, excessive noise can occur.

• Continue the twisted, shielded pair all the way back to the H1 card and ground the shield at the ground bus bar on the 8-wide I/O carrier.

A faulty power supply. Replace the unit.

Problems Commissioning Devices

A device that does not commission correctly or shows up as decommissioned in Diagnostics could be lacking its necessary DD (device description) files. The DeltaV system includes built-in support for a number of fieldbus devices from device manufacturers. The files necessary to support these devices are included in the DeltaV install image. If a Fieldbus device is not included in the DeltaV install image, you must install a set of device files for that device. The device files are specific to the device's type and revision. The device files are packaged in device install kits that can be found on the DeltaV website under Resources. Download the DD files to a disk, CD, or directory on your system. Emerson Process Management has tested the device files on the website with the DeltaV system. Use the Add Device Type command in DeltaV Explorer to add the device files to the DeltaV system. Refer to Books Online for more information on commissioning devices.

Troubleshooting 99

Missing Values in Resource or Transducer Block

Missing values in the Resource or Transducer block could indicate a database or device error. If any of the necessary parameter values in the Resource or Transducer block are blank, try:

Closing and restarting DeltaV Explorer.

Power cycling or master restarting the device.

Repairing or replacing the device.

Note In general, power cycling or master restarting a device can often correct device errors that do not respond to other actions.

To power cycle a device

1. Decommission the device.

2. Disconnect the device from the segment.

3. Wait 10 –15 seconds and then reconnect the device.

For four wire transmitters such as MicroMotion, disconnect the power source and the segment connection and reconnect the segment wiring after reconnecting the power source (usually the AC power source).

To restart a device

1. Right-click the device in DeltaV Explorer:• If the device supports a method, select the Restart option and follow the

instructions provided by the wizard.

• If the device does not support a method:

•Select Configure/Setup

•Select the Hardware tab

•Change Restart to Processor

•Click Apply


Simulate not Working in Control Studio

If Simulate is enabled in Control Studio but not working, the problem could be that the jumper or dip switch that allows simulation for the device is not set. For simulation to work, it must be enabled in Control Studio and the jumper or switch must also be set on the device.

To set the jumper or dip switch

1. Locate the jumper or dip switch on the side opposite the wiring connections.

2. Set the jumper or switch.

Troubleshooting 101

Trouble-Shooting Q and A

The following sections provide answers to commonly asked questions.

Has the H1 Card Failed?

If the H1 card fails, the DeltaV system loses visibility on the fieldbus segments. On a segment that does not support a backup Link Active Scheduler (LAS), if the H1 card fails, all communication on the attached fieldbus segment stops.

To recover from an H1 card failure, replace the card. The H1 card is automatically downloaded and resumes functioning as the LAS. Startup of the loop depends on how the loop is configured.

What Happens to Control When the H1 Card Fails?

On a segment that does not support a backup link master, if the H1 card goes down, all communication on the fieldbus segment stops. Depending on the configuration, output blocks might go to a Fault State state.

What Happens to Control When the Controller Fails?

If the control loop is running completely on the fieldbus segment (that is, the control is running in the devices and not in the controller), the loop keeps running. However, if the loop is getting input from the controller, the loop performs its configured error processing.

To recover from a controller failure, replace the controller and then commission and download it. If the controller failure affected the fieldbus loop, startup of the loop depends on how the loop is configured.

How Does the User Know if there is a Problem with the Backup Link Master?

View the integrity of the backup link master device in DeltaV Diagnostics.


Fieldbus Third Party Products

This section provides recommended sources for fieldbus components. Visit the DeltaV web site for recent updates to this list.

Fieldbus Segment Cable

Belden

Fieldbus Cable 3076F or equivalent

Fieldbus Power Supplies

Pepperl+Fuchs

MB-FB-4* 4 Segment Simplex Power Hub with HD2-FBPS.1.500 Power Supplies & HD2-DM-B Diagnostic Module

MB-FB-4R* 4 Segment Redundant Power Hub with HD2-FBPS.1.500 Power Supplies & HD2-DM-B Diagnostic Module

KLD2-STR-1.24.400.IEC (STR400) (FieldConnex Branded) Fieldbus Power Supply (Manufactured March, 2004 or later)

Relcom, Inc.

Relcom FPS-I, 2 Redundant Fieldbus Power Supply

Relcom FPS-DT, D Dual Fieldbus Power Supply

Hawke International

Hawke Routemaster Series 100 with RM114/118 Device Couplers — Fieldbus IS Power Supply. Refer to Knowledge Base Article #NA-0300-0050 for application specific information.

Measurement Technology Limited

MTL9121-IS-PS Fieldbus FISCO IS Power Supply

MTL9122-IS-PS Fieldbus FISCO IS Power Supply

MTL9111-NI-PS Fieldbus FNICO NI Power Supply

MTL9112-NI-PS Fieldbus FNICO NI Power Supply

Fieldbus Third Party Products 103

Spur Adapters and Surge Protectors


9321-SC Fieldbus IS Entity Adapter (9121-IS use only). See Application_MTL_IS.

9322-SC Fieldbus IS EExia Spur Adapter. See Application_MTL_IS.

9323-SC Fieldbus IS Entity Adapter (9121/22-IS use only). See Application_MTL_IS.

FP32 Fieldbus Surge Protector (Rail Mount). See Application Note TAN1010.

TP32* Fieldbus Surge Protector (Threaded). See Application Note TAN1010.

TP32*-NDI Fieldbus Surge Protector (Threaded). IS See Application Note TAN1010.

Fieldbus Terminators


FBT-1 Fieldbus Terminator

FBT1-IS Fieldbus IS Terminator

Relcom, Inc.

FCS-MBT Fieldbus Terminator with Surge Protection

Turk/InterlinkBT

RSEV 49 TR Eurofast Fieldbus Terminator

RSV 49 TR Minifast Fieldbus Terminator

Pepperl+Fuchs

F*-FT-Ex1.D.IEC — Threaded Fieldbus Terminator

F*-FT-Ex1.I.IEC — Threaded Fieldbus IS Terminator

Fieldbus Segment Protectors and Field Barriers

Relcom, Inc.

FCS-MB* — 2, 4, 8, 10 device Megablock

FCS-MB*-SG — 2, 4, 8, 10 device Megablock with device short circuit protection

F240*-F261* — 2, 4, 8, 10 device IS Megablock with and without short circuit protection


Fieldbus Third Party Products 105

Pepperl+Fuchs

F2-JBSC-*.FF.* — 4,6,8 spur with connectors and device short circuit protection

F2-JBSC-* — 4,6,8 spur with cable glands and device short circuit protection

F6-JBSC-*.FF.* — 4,6,8 spur with connectors and device short circuit protection

F6-JBSC-* — 4,6,8 spur with cable glands and device short circuit protection

R-JBSC-* — 4,6,8 spur DIN rail mounted with device short circuit protection

R-SP-N12 — 12 spur DIN rail mounted with device short circuit protection

For the Segment Protectors and Field Barriers, the trunk and spur shields (T-S) must be jumpered together and isolated (remove jumpers) from case ground.

F2D0-FB-Ex4* FieldConnex FISCO/Entity IS FieldBarrier — 4 device IS barrier with short circuit protection.

F6D0-FB-Ex4* FieldConnex FISCO/Entity IS FieldBarrier, SST — 4 device IS barrier with short circuit protection

RD0-FB-Ex4* FieldConnex FISCO/Entity IS FieldBarrier (DIN rail mounted) — 4 device IS barrier with short circuit protection

The IS field barriers must have a manufacture date of June, 2003 or later.

The segment must be powered by either a Relcom or Pepperl+Fuchs Fieldbus Power Supply listed above or a Pepperl+Fuchs KLD2-PC-1.1 IEC Rev 2 FieldConnex Power Conditioner (manufactured June, 2004 or later). Refer to Knowledge Base Article # NA-0300-0048 for application specific information.

Turk/InterlinkBT

JBBS-49-E413,613,813 — Eurofast 4, 6, 8 Device Junction Block (no short circuit protection)

JBBS-49-M413,613,813 — Minifast 4, 6, 8 Device Junction Block (no short circuit protection)

JBBS-49SC-E413,613,813 — Eurofast 4, 6, 8 Device Junction Block (with device short circuit protection; manufactured Nov. 2004 or later)

JBBS-49SC-M413,613,813 — Minifast 4, 6, 8 Device Junction Block (with device short circuit protection; manufactured Nov. 2004 or later)

Fieldbus Repeaters

SMAR

RP302


References

IEC 61158-2; 2003, Fieldbus Standard for Use in Industrial Control Systems – Part 2: Physical Layer Specification and Service Definition

ISA-S50.02-1992, Fieldbus Standard for Use in Industrial Control Systems – Part 2: Physical Layer Specification and Service Definition

DS50.02 Part 2 [Draft Standard] 1995, Fieldbus Standard for Use in Industrial Control Systems – Part 2: Physical Layer Specification and Service Definition, Amendment to Clause 22 (Formerly Clause 11 and Clause 24), This document has been re-released in 1996 as Draft 2.

References 107


IndexAAbout This Manual viiAC waveform

measuring 65Alarm contacts

on the Fieldbus Power Hub 41Applications

FISCO 15high availability 15, 37Intrinsically Safe 15, 56Intrinsically Safe with MTL power supply

71IS 15, 56NI 16, 61Non-Incendive 16, 61

BBlocks

resource and transducer 96CCable

grounding and shielding 22lengths 19specifications for fieldbus Type A 19types 17

Capacitancemeasuring 64

Checkout procedure 63Chicken-foot

See TopologiesCommissioning fieldbus devices 99

troubleshooting 99Communication statistics

for fieldbus devices 94for H1 card ports 93

Componentsfieldbus power supply 15H1 card, See also Redundant Series 2 H1

card 13primary link master 13spur adapters 71terminators 16wiring 16

Contactsalarm 41

Control strategydesigning 21

Conventionscaution ixnote ixprocedures ixwarning ix

DDaisy chain

See TopologiesDC power 20

high availability applications using theFieldbus Power Hub 42

high availability applications using theFieldbus Power System 31

Intrinsically Safe applications using theFieldbus Power Hub 51

Non-Incendive applications using theFieldbus Power Hub 57

DeltaV Diagnosticstroubleshooting with 92viewing H1 port status values with 92

DeltaV Explorertroubleshooting with 91

Device errorstroubleshooting 96

DevicesSee fieldbus devices

Diagnostic Module 39FFBPS-1.23.500 isolated power supply module

Index-1

specifications 59FBPS-1.500 isolated power supply module

specifications 39Field Barrier 51, 55

installing 55Fieldbus devices

commissioning 99communication statistics for 94geographic distribution of 21master restart for 100number supported on a segment 15power cycling 100power requirements for 15troubleshooting errors with 96

Fieldbus Diagnostic Module 39Fieldbus H1 card

See H1 cardFieldbus Motherboard - MB-FB-4R 39Fieldbus Power Hub

for high availability applications 39for IS applications 51for NI applications 57installing 46specifications 39

Fieldbus power supply 15See Power supply, Fieldbus Power Hub,

Pepperl+Fuchs Fieldbus PowerHub, Fieldbus Power System, Rel-com Fieldbus Power System

Fieldbus Power System 27for high availability applications 27installing 35specifications 27

Fieldbus segmentcheckout procedure for 63measuring AC waveform on 65measuring capacitance on 64measuring DC voltage on 65

measuring resistance on 64planning criteria for 21troubleshooting 89

Fieldbus technologyinteroperability 12overview 11

Fieldbus Type A cable 18specifications for 19

FieldConnex FieldBarrier 51FieldConnex Segment Protector 44, 57FISCO 15, 51FNICO 79GGround connections 22HH1 card

port status values 92redundant 13See also Series 2 H1 card and Redundant

Series 2 H1 card 13Series 2 redundant 13troubleshooting 90, 97

H1 card portscommunication statistics 93communication status values 92enabling 97

High availability applicationsDC power for 31example using Fieldbus Power Hub 49example using Fieldbus Power System 38installing segment protector and power

supply 31IInstalling

field barrier 55Fieldbus Power Hub 46Fieldbus Power System 35fieldbus segment 23

Index-2 Fieldbus Installations in a DeltaV Automation System

Megablocks 36MTL9111-NI power supplies 82MTL9112-NI power supplies 82MTL9121 and 9122 IS power supplies 74Pepperl+Fuchs Fieldbus Power Hub 46redundant power supplies 35Relcom Fieldbus Power System 35segment protector 47terminators 26

Interoperability 12Intrinsically Safe applications 51

DC power for 51example of 56installing field barrier and power supply 54

Intrinsically Safe applications with MTL pow-er supply 71LLAS 12Link Active Scheduler

See LASLink master 13MMaster restart 100Megablock

installing 36MTL Fieldbus Entity Spur Adapter 71MTL Fieldbus IS EExia Spur Adapter 71MTL Intrinsically Safe power supplies

installing 74MTL9111-NI power supply

installing 82MTL9112-NI power supply

installing 82MTL9121 IS power supply

installing 74MTL9122 IS power supply 74NNon-Incendive applications 57

DC power for 57example of 61installing power supply and segment pro-

tector 59Non-Incendive applications with MTL powersupply 82PPepperl+Fuchs Fieldbus Diagnostic Module 39Pepperl+Fuchs Fieldbus Power Hub 39Pepperl+Fuchs FieldConnex FieldBarrier 51Pepperl+Fuchs FieldConnex Segment Protec-tor 57Point-to-point

See TopologiesPower supply 15

Fieldbus Power Hub 39Fieldbus Power System 27installing Fieldbus Power Hub 46installing Fieldbus Power System 35installing MTL9111-NI 82installing MTL9112-NI 82installing MTL9121 and 9122 IS 74

Primary Link Master 12RRedundant Fieldbus Power System

about 27specifications 27

Redundant H1 card 13Redundant power 15

using in high availability applications 48using in Intrinsically Safe applications 56using in Non-Incendive applications 61

Redundant Series 2 H1 cardfigure showing 38using in high availability applications 38using in Intrinsically Safe applications 56using in Non-Incendive applications 61

Relcom Megablock 33

Index-3

Relcom Redundant Fieldbus Power Systemabout 27

Resistancemeasuring 64

Resource blocks 96troubleshooting 100

SSegment errors

troubleshooting 96Segment Protector 44, 57

installing 47Series 2 H1 card

redundant 13See also Redundant Series 2 H1 card 13simplex 13

Short circuit protection 27, 44designing an application for 34Pepperl+Fuchs Segment Protector 44Relcom Megablock 33

SpecificationsFBPS-1.23.500 isolated power supply

module 59FBPS-1.500 isolated power supply module

specifications 39redundant Fieldbus Power System 27

Spur adaptersrecommendations for using 71

Spur lengths 20TTerminator switches

MTL9111-NI power supply 84MTL9112-NI power supply 84

Terminators 16determining types to use 26installing 26Relcom FCS-MBT 33

Topologies 17Transducer blocks 96

troubleshooting 100Tree

See TopologiesTroubleshooting

device commissioning 99device error 96fieldbus segment 89H1 card 90resource and transducer blocks 100segment errors 96with DeltaV Diagnostics 92with DeltaV Explorer 91

Trunk with spursSee Topologies

VVoltage

measuring 65WWiring components 16

Index-4 Fieldbus Installations in a DeltaV Automation System

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Fieldbus Installation

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