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1HART is a registered trademark of the HART Communication Foundation
The Power of HART Using HART Communication to
Improve Process Operation and Better Manage Plant Assets
Ron HelsonHART Communication Foundation
Austin, TX
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HART is a registered trademark of the HART Communication Foundation
Things You May Know About HARTThings You May Know About HART Most smart instruments use HART
Communication HART smart field devices are used
interchangeably with traditional 4-20mA analog only units
Hand Held Communicators are often used to perform device set-up, calibration, commissioning and periodic maintenance functions
PC-based instrument management tools can remotely communicate with HART devices to manage calibration and other instrument parameters from central locations (instrument shop or control room)
HART = Savings in Installation & Maintenance
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HART is a registered trademark of the HART Communication Foundation
Things You May Not Know About HARTThings You May Not Know About HART All HART smart devices provide process data for plant
operation continuously - 24/7 HART provides access to all device data
while the 4-20mA analog signal is being used for control
Information about the status (health) of the field device and quality of the 4-20mA signal is part of every message
The Primary Variable is transmitted as a 4-20mA signal and also as digital value
Many devices have process information (measured or calculated) in addition to the Primary Variable
This Data is VALUABLE $$$
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HART is a registered trademark of the HART Communication Foundation
HART BasicsHART Basics
Digital FSK allows additional information to be carried on the same pair of wires
with the 4-20 mA Analog Signal
Simultaneously and Transparently
4-20 mA
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HART is a registered trademark of the HART Communication Foundation
The HART FSK SignalThe HART FSK Signal
The Familiarity of 4-20 mA…with the Benefits of Digital Communication
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HART is a registered trademark of the HART Communication Foundation
Valuable DataValuable Data
35-40 data items are Standard in every HART device Device Information Basic Calibration
Information Process Variables Diagnostic Status Alerts
Use this Data to Improve Process Operations and Better Manage Plant Assets
All Data is easily available to Plant Systems!
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HART is a registered trademark of the HART Communication Foundation
Digital Process VariablesDigital Process Variables
Many HART devices support more than one process measurement or calculated value
HART provides access to All Process Variables in the device
All Digital Process Variable data includes: IEEE Floating Point Value Standard Engineering Units Code Data Quality Status
Primary Variable transmitted on the 4-20mA current loop continuously
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HART is a registered trademark of the HART Communication Foundation
Status & Diagnostic AlertsStatus & Diagnostic Alerts
All HART smart field devices continuously self-assess and monitor their performance
Diagnostic status information is returned with every message
Status Alerts include quality of 4-20mA signal and process variable data
Continuous communication increases integrity of control system information Get early warning of device problems Automatically track and detect changes
in Range or Engineering Units Validate PV and Loop Current values at control
system with data from the source field device
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HART is a registered trademark of the HART Communication Foundation
Example ApplicationsExample Applications Is the pH electrode cracked or coated? Has the temperature sensor failed? Is the measurement accurate? Is the measurement within range? Are the impulse lines clogged? Has the pressure sensor been over-ranged? Has the device been left in “loop test” position? Is the air pressure adequate to operate the valve? Is the control valve operating smoothly over the full range? Has the device failed or locked-up? Will the Emergency Shut Down valve operate if required?
Unleash the POWER of HART
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HART is a registered trademark of the HART Communication Foundation
Use HART Full-timeUse HART Full-time to Unleash the POWER to Unleash the POWER
Part-Time Communication
FULL-TIME Communication
Integrated with Plant Systems
Commissioning Troubleshooting Documentation Database
Validation Automated
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Diagnostic Alerts for proactive action
PV Good / Bad status for improved safety / reliability
Validate accuracy of control system information
Full access to multi-variable instrument information
Integrate data with ERP/CMMS Systems
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HART is a registered trademark of the HART Communication Foundation
Getting HART in Plant SystemsGetting HART in Plant Systems Cost-effective interfaces support
integration with plant systems Many control systems offer direct
HART interface and support use of HART data through-out
Third party products support use with non-HART capable systems Multiplexers - Some integral with FTA Gateways - HART to Ethernet, HART to
Modbus, HART to Profibus, more... Single Device Interfaces - Transform
digital process variables and status alerts into 4-20mA signals and/or contact closures
I/OI/O
HART
DA T A
ControllerController
HMIHMIEngineeringEngineering
MaintenanceMaintenance
HAR T
D A T A
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HART is a registered trademark of the HART Communication Foundation
Solutions for HART IntegrationSolutions for HART Integration
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HART is a registered trademark of the HART Communication Foundation
Using HART in Plant SystemsUsing HART in Plant Systems Continuously Monitor Device
Status & Diagnostics– Device Malfunction– Loop Current Fixed– Device Needs Maintenance
Validate Integrity of Control System Information
– Read Loop Current, PV and Range values from device
– Verify accuracy of system data– Ensure scaling factors in system match field device - 20mA & 4mA points
Get Full Value from Multi-Variable devices– Access Secondary Process Variables for operator display, trending, or control– Use additional process measurements and calculated values to improve plant
operation and manage assets
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HART is a registered trademark of the HART Communication Foundation
Monitoring HART Smart ValvesMonitoring HART Smart Valves Actual stem position
– Identify sticking or stuck condition, % trim wear, poor response Actuator Pressure
– Low pressure from clogged filter, leaking connections or torn diaphragm
Temperature – Inside Positioner
Set Point – Target Stem Position
Fugitive Emission Potential Positioner malfunction Partial Stroking for ESD Valve testing
Specialized Diagnostic Software Packages
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HART is a registered trademark of the HART Communication Foundation
Single Device HART Interface SolutionSingle Device HART Interface Solution
HART Field
Device
SPA uses HART communication to get process variable and diagnostic data from device and converts information into 4-20mA signals and/or contact closures
HART Instrument Fault Alarm
Second Variable (SV) High/Low Alarm
Third Variable (TV) High/Low Alarm
Fourth Variable (FV) High/Low Alarm
4-20mA Proportional to SV, TV, or FV
4-20mA Proportional to PV
One Wire from Field to Control RoomMultiple Analog Signals and Alarm Contacts to the Control System
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HART is a registered trademark of the HART Communication Foundation
Getting HART on Plant NetworksGetting HART on Plant Networks OPC Server provides easy
access to HART device data anywhere on plant network
Allows several applications to access data in a HART device at the same time
Enables popular HMI and Trending packages to access data in HART devices
Connect to one or thousands of devices using common HART I/O systems & interfaces
Get HART Data on Your Desktop
HART SERVER TOOL
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HART is a registered trademark of the HART Communication Foundation
Other Things You Should KnowOther Things You Should Know HART is Safe, Secure, and Available
– Tested and Accepted global standard– Supported by all major instrumentation manufacturers
Saves Time and Money– Install and commission devices in fraction of the time– Enhanced communications and diagnostics reduce maintenance– Low or no additional cost by many suppliers
Improves Plant Operation and Product Quality– Additional process variables and performance indicators– Continuous device status for early detection of warnings– Digital capability ensures easy integration with plant networks
Protects Your Asset Investments– Compatible with existing instrumentation systems and people– Allows benefits to be achieved incrementally– No need to replace entire system
HART = High VALUE + LOW RISK
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HART is a registered trademark of the HART Communication Foundation
What to Do?What to Do? Identify your HART devices Provide HART capability training for your staff Talk with your suppliers about access to your
HART data and providing you with tools to better use the capability of your HART devices
Use your assets to their fullest… You probably are using only a small part of HARTability
Find Out More!
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HART is a registered trademark of the HART Communication Foundation
Support for HART TechnologySupport for HART Technology
Provides Worldwide Support for Application of the HART Communication Technology
Technology Owner and Standards Setting Body for the HART Protocol
Independent Non-Profit Organization Funded by Membership and Training/Support service fees Any Company interested in Use of the HART Protocol should
be a member
®
HARTCOMMUNICATION FOUNDATION
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HART is a registered trademark of the HART Communication Foundation
Foundation ServicesFoundation Services
Manage and control the HART Protocol Specifications
Enhance the HART technology as necessary to support industry needs for Smart Instrumentation
Provide Training Workshops, Newsletters, Web Site and other Services to Educate Industry on use of the HART Protocol
Manage Library and distribution of Registered Device Descriptions for HART devices
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HART is a registered trademark of the HART Communication Foundation
The Bottom Line...The Bottom Line...
Most Users and Suppliers do not use the full value of HART
The HCF is here to help you
Get More from HART Communication!
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HART is a registered trademark of the HART Communication Foundation
Questions & AnswersQuestions & Answers
Ron Helson
HART Communication Foundation9390 Research Blvd., Suite I-350
Austin, Texas 78759 USA
Tel: 512-794-0369
Fax: 512-794-3904
e-mail: [email protected]
www.hartcomm.org
Thank You for Your Attention!