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Service Manual BMS option for Daikin water chillers
Gateway EKBMSMBAEKBMSBNA
Address card EKAC10A/30A/60A/120A
ESIE99-03
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Table of Contents i
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1
Table of Contents
1 Introduction
1.1 About This Manual ........................................................................................................v
1.2 Building Management System (BMS) .......................................................................... vi
Part 1
System Outline
1 System Outline
1.1 What Is in This Chapter?........................................................................................... 1-31.2 Communication Outline............................................................................................. 1-41.3 Product Range .......................................................................................................... 1-6
1.4 Protocol and Data Transfer ....................................................................................... 1-71.5 Outline of the Gateway.............................................................................................. 1-8
1.6 Outline of the Address Card in kit EKAC10A .......................................................... 1-101.7 Outline of the Address Cards in the EKAC30A/60A/120A kits................................ 1-11
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ii Table of Contents
Part 2
Installation
1 Installing and Connecting the System
1.1 What Is in This Chapter? ...........................................................................................2-31.2 Connecting an Address Card in the Serial Line.........................................................2-4
1.3 Installing the Address Card EKAC10A.......................................................................2-51.4 Connecting the Address Card EKAC10A to the Controller ........................................2-61.5 Connecting the Address Card EKAC10A to the Transfo ...........................................2-7
1.6 Installing the Address Card EKAC30A/60A/120A......................................................2-81.7 Connecting the Address Card EKAC30A/60A/120A to the Field Rail........................2-9
1.8 Connecting the Gateway to the Configuration Computer ........................................2-101.9 Connecting the Gateway to the BMS.......................................................................2-11
2 Configuration
2.1 What Is in This Chapter? .........................................................................................2-132.2 Gateway Hardware Configuration............................................................................2-142.3 Gateway Software Configuration (MS–DOS program) ............................................2-17
2.4 How to Read or Adjust BMS Parameter Settings with the Small Daikin Controller .2-192.5 Settings: Direct and User Parameters in the Small Daikin Controller......................2-20
2.6 How to Read or Adjust BMS Parameter Settings with the Large Daikin Controller .2-222.7e
User Settings Menu in the Large Daikin Controller ............................................2-23
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Table of Contents iii
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1
Part 3
Functional Description
1 General
1.1 What Is in This Chapter?........................................................................................... 3-31.2 Generalities on the Protocols .................................................................................... 3-4
1.3 References to ASHRAE Manual of the BACnet Protocol.......................................... 3-5
2 Implemented Commands in the Gateway
2.1 What Is in This Chapter?........................................................................................... 3-7
2.2 Protocol ..................................................................................................................... 3-82.3 Implemented Commands.......................................................................................... 3-9
3 Database
3.1 What Is in This Chapter?......................................................................................... 3-113.2 Database creation................................................................................................... 3-12
3.3 The Address Card EKAC10A Database ................................................................. 3-163.4 The Address Card EKAC30A Database ................................................................. 3-18
3.5 The Address Card EKAC60A Database ................................................................. 3-21
3.6 The Address Card EKAC120A Database ............................................................... 3-24
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iv Table of Contents
Part 4
Troubleshooting
1 Troubleshooting
1.1 What Is in This Chapter? ...........................................................................................4-31.2 Fault Indications.........................................................................................................4-4
1.3 Troubleshooting .........................................................................................................4-6
Appendix A
Drawings
Index
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ESIE99–03 Introduction
v
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1 Introduction
1.1 About This Manual
Introduction
The purpose of the Daikin Gateway and address cards is to connect the Daikin water chillers to a larger
Building Management System (BMS).
There are two different Gateways:
EKBMSMBA to connect with a system using Modbus-Jbus protocol
EKBMSBNA to connect with a system using BACnet protocol.
There are 2 different types of address cards:
The first card is only used in kit EKAC10A.
The other card is used in the EKAC30A, EKAC60A and EKAC120A kits.
Before starting up the system for the first time, ensure it has been properly installed.
You will find the following tools at the back of the manual:
A list of drawings. Refer to Appendix A Drawings.
An index. Refer to Index.
Usage of the
manual
The present manual gives you all the information you need to do the set up and the troubleshootingrelated to the BMS option for Daikin water chillers. It is intended for and should only be used by
qualified engineers. It is not intended to replace technical know-how acquired through training andexperience.
Using icons
Icons are used to attract the attention of the reader to specific information. The meaning of each iconis described in the table below:
IconType of
informationDescription
Note A ‘note’ provides information that is not indispensable, but maynevertheless be valuable to the reader, such as tips and tricks.
Caution A ‘caution’ is used when there is danger that the reader, throughincorrect manipulation, may damage equipment, loose data, get anunexpected result or has to restart (part of) a procedure.
Warning A ‘warning’ is used when there is danger of personal injury.
Reference A ‘reference’ guides the reader to other places in this binder or in thismanual, where he/she will find additional information on a specifictopic.
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Introduction ESIE99–03
vi
1.2 Building Management System (BMS)
Introduction
As buildings, plants or other sites become too large to control manually, the need for automaticdistance control becomes more important. Building Management Systems (BMS) were developed to
have a centralized overview of complete sites.
In general, control of lights, elevators, water supply, air conditioning, power consumption, etc. can be
controlled by one control system.
Communication
To implement correct communication between the connected subsystems and the control system, the
same communication protocol must be used.
Daikin BMS option
The Daikin BMS option makes it possible to connect the Daikin chillers to a larger control system. The
tools necessary for this communication are the Gateway and the address cards.
After installing address cards and Gateway, the BMS must be programmed to be able to control and
monitor the chillers through the Gateway. To enable this configuration, individual parameters andrelative addresses of the chillers are described in this manual.
Illustration
The illustration below gives an example of a centralized building control by a BMS.
Serialmodule
µ chiller compact
l i n e
p r i n t o
u t
a l a r m
1
a l a r m
2
r x t x r e s e t
Gateway
BMS water supply
lights
elevators
...
Daikin chiller
Daikin chiller
Daikin chiller
Gateway
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Part 1
System Outline
Introduction
The purpose of this part is to describe the communication network outline and the outline of theindividual parts.
Overview
This part contains the following chapter:
chapter See ...
1 – System Outline page 1-3
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Part 1 – System Outline 1–3
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Part 1
1 System Outline
1.1 What Is in This Chapter?
Introduction
The purpose of this chapter is to display a communication network example, to display the Gateway
and address card outline and to display the applicable Daikin chillers’ software versions.
Overview
This chapter covers the following topics:
Topic See ...
1.2 – Communication Outline page 1-4
1.3 – Product Range page 1-6
1.4 – Protocol and Data Transfer page 1-7
1.5 – Outline of the Gateway page 1-8
1.6 – Outline of the Address Card in kit EKAC10A page 1-10
1.7 – Outline of the Address Cards in the EKAC30A/60A/120A kits page 1-11
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System Outline ESIE99–03
1–4 Part 1 – System Outline
1.2 Communication Outline
Introduction
The communication between Gateway and address cards is possible in Carel protocol. Thecommunication between Gateway and BMS is possible in Modbus-Jbus or BACnet protocol.
The chillers, address cards and the Gateway are Daikin parts. The other equipment must be fieldsupplied.
Communication
outline example
The illustration below shows a communication outline example.
Serial module
µ chiller compact
l i n e
p r i n t o
u t
a l a r m
1
a l a r m
2
r x t x r e s e t
Gateway
BMS
Field supplied equipment
Daikin supplied equipment Gateway
Address card
EKAC10A
Address cardEKAC30A/60A
Address cardEKAC120A
Modbus-Jbus or
BACnet protocol
Carel protocol
EUWY10HCW1 or
EUWA12HDZW1 or ...
EUWA35HDZW1 or
EUW*100KXY1 orEUWAT50KAY1 or ...
EUWA200KX orEUW(*)120KX or ...
...
water supply
lights
elevators
ConfigurationPC
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Parts and
description
The table below gives a description of the different parts of the communication outline:
Part Description
BMS The Building Management System is the customer’s control unit. Refer to
‘Building Management System (BMS)’ on page vi.
Gateway The Gateway is necessary as an interface between the chillers and the BMS.It translates the Carel protocol, which is used by the address cards to theModbus-Jbus or BACnet protocol, used by the BMS. Refer to ‘Outline of the
Gateway’ on page 1-8.
Address CardEKAC10A
The EKAC10A is a small module that should be clicked on a DIN-rail of thechiller. It enables the chiller to communicate with the Gateway. Refer to ‘Out-
line of the Address Card in kit EKAC10A’ on page 1-10.
Address cardEKAC30A/60A
The EKAC30A/60A is a small electronic board that must be attached to themain electronic board of the chiller. It enables the chiller to communicate withthe Gateway. Refer to ‘Outline of the Address Cards in the
EKAC30A/60A/120A kits’ on page 1-11.Address CardEKAC120A
The EKAC120A are two small electronic boards that must be attached to thetwo electronic boards of the chiller. It enables the chiller to communicate with
the Gateway. Refer to ‘Outline of the Address Cards in theEKAC30A/60A/120A kits’ on page 1-11.
Configuration PC The configuration PC is only necessary for configurating the Gateway. Oncethis is done, it must be removed. Refer to ‘Connecting the Gateway to the
Configuration Computer’ on page 2-10.
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1–6 Part 1 – System Outline
1.3 Product Range
Introduction
From this series onwards, all Daikin chillers can be connected to a supervisory BMS.
To make it possible to connect 5–12HP chillers to a BMS system, a complete redesign of the switchboxand the controller had to be done. This means that not on all chillers 5–12HP BMS is applicable.
The only changes for the larger chillers were made in the software. During the first year of production,the chillers were not equipped with BMS-applied software. To ensure that the chiller is usable for theBMS the software version must be checked first.
To change the EPROM for the correct software, refer to "Procedure for the Changing of the PCB" inthe relevant Daikin chiller service manual.
Address cards
The table below displays the product range of the address cards:
Gateway
The table below displays the two different Gateways:
Address card kitname Applicable chillers Software version
Number of
addressesper chiller
EKAC10A EUWA5-12H(C/D)(Z) – 1
EUWY5-10H(C/D)
EKAC30A EUWA15-30(35)HD(Z) EPDAIECHOAV2.012 or later
1
EUWY15-30HD
EKAC60A EUWA*40-60KA EPDAIECHLAV2.012 or later
1
EUWA*40-60KAX
EUW*40-100KX EPDAIECHWAV2.012 or later
EKAC120A EUWA*80-120KA EPDAIECHPA
V2.012 or later
2
EUWA*80-120KAX
EUWA*160-200KX EPDAIECHZA
V2.012 or laterEUW*120-200KX
Gateway name Supported protocol Communication is possiblewith maximum ... addresses.
EKBMSMBA Modbus-Jbus 16
EKBMSBNA BACnet 8
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1.4 Protocol and Data Transfer
Introduction
The communication between the Daikin chillers and the supervisory BMS is achieved in two steps witha different communication protocol:
in Carel protocol between the address cards and the Gateway
in BACnet or Modbus-Jbus protocol between the Gateway and the BMS.
BACnet and
Modbus-Jbus
differences
There are two major differences between the BACnet system and the Modbus-Jbus system:
Address of the
Gateway
The Gateway can be identified by the supervisor through the assignment of a univocal address within
the Modbus-Jbus and the BACnet network. The address of the Gateway is programmable during theconfiguration.
Refer to ‘Gateway Software Configuration (MS–DOS program)’ on page 2-17.
Master-slave
The management of the communication occurs in accordance with a master-slave structure in polling,where the Gateway is the master and the address cards are the slaves.
The variable
database of each
address card
For each address card it is possible to manage up to:
128 analog variables
128 integer variables
200 digital variables.
The chillers’ variable databases are used as the point of reference for the supplier of the supervisory
BMS to assign a suitable meaning to the variables.
The variables can be read and/or written by the supervisory BMS according to the connected chiller
and/or the application program being used.
The supervisory BMS can’t assign a value to a variable in real mode. The command would be
ineffective.
The variables requested from the supervisory BMS, but not available in the chiller with installedaddress card, are sent from the Gateway to the supervisory BMS with the value 0. The supervisoryBMS will have to manage them properly.
Refer to ‘Database’ on page 3-11.
BACnet system Modbus-Jbus system
The Gateway uses a standard RS-232
(Point-to-Point) to communicate with the super-visory BMS.
The Gateway uses a standard RS-232
(Point-to-Point) or RS-485 (multidrop) to com-municate with the supervisory BMS.
The Carel standard permits up to eight address
card connections to the Gateway.
The Carel standard permits up to 16 address
card connections to the Gateway.
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System Outline ESIE99–03
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1.5 Outline of the Gateway
Introduction
The Gateway is the interface between the chillers’ address cards communicating in Carel protocol anda supervisory BMS communicating in Modbus-Jbus or BACnet protocol.
The Gateway should be installed indoors, next to the BMS.
Gateway kit
The Gateway kit consists of the following parts:
one Gateway
one PC diskette with an MS-DOS-formatted program for the initial configuration of the Gateway
one Cable terminal (resistor 120 Ω 1/4 W).
Illustration
The illustrations below display a general overview of the Gateway and its dimensions.
Front view buttons The table below shows the different front view buttons:
l i n e
p r i n t o u t
a l a r m
1
a l a r m
2
r x t x
r e s e t
G a t e w a y
G a t e w a y
226130
52
166
18
7105.4
2020
l i n e
p r i n t o
u t
a l a r m
1
a l a r m
2
r x t x r e s e t
Gateway
config.
Carel Net. relay fuse
c o d .modem
rs422/485
FRONT VIEW REAR VIEW
DIMENSIONS
Button Function
print out No function
reset It will reset the Gateway and restart the internal configurationand external inquiry process of the address cards.
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Front view LED
indicators
The table below describes the different LED indicators:
Refer to ‘Fault Indications’ on page 4-4.
Connections
The table below shows the different connectors:
Technical data
Intel 8032 microprocessor, 12 MHz
240 VAC factory standard power supply (can be changed into 24 VAC or 120 VAC (1))
Resident program, EPROM, 64 KB
(1) Refer to ‘Changing to 24 or 120 VAC’ on page 2-15.
LED Colour indicates that ...
line yellow The power supply is on
alarm 1 red An error in the configuration has been stored in
the buffered RAM
alarm 2 red A malfunction in the communication between
the Gateway and the address card has occured,
probably due to an inconsistency with the initial
configuration
rx green Communication is OK (flashing)
tx green Communication is OK (flashing)
Connector name Type Connect to ... Refer to ...
modem 9-pin
male
BMS/supervisory system with
RS-232 standard
‘Connecting the Gateway tothe BMS’ on page 2-11
RS-422/485 9-pin
female
BMS/supervisory system with
RS-485 standard
‘Connecting the Gateway to
the BMS’ on page 2-11
config. 9-pin
male
Configuration PC or terminal ‘Connecting the Gateway to
the Configuration Computer’ on page 2-10
Carel Net. 9-pin
female
Address cards with RS-485
standard
‘Connecting an Address Card
in the Serial Line’ on page 2-4
fuse – fuse for 240 or 120 VAC
fuse for 24 VAC
page 2-16
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System Outline ESIE99–03
1–10 Part 1 – System Outline
1.6 Outline of the Address Card in kit EKAC10A
Introduction The address card EKAC10A will enable the chillers EUWA5-12H(C/D)(Z) and EUWY5-10H(C/D) to
communicate with the Gateway.
Address card kit The address card kit consists of:
one address card (type EKAC10A)
one connection cable to the chiller’s controller
one connection cable + one fused connection cable (power supply).
Illustration The illustration below shows the dimensions of the address card EKAC10A.
Connections on the
address card
The address card, installed on the chiller’s DIN rail (1), has to be connected to:
the chiller’s transfo for power supply (2) the Gateway or another address card in the serial line (3)
the chiller’s controller (4).
(1) Refer to ‘Installing the Address Card EKAC10A’ on page 2-5.
(2) Refer to ‘Connecting the Address Card EKAC10A to the Transfo’ on page 2-7.
(3) Refer to ‘Connecting an Address Card in the Serial Line’ on page 2-4.
(4) Refer to ‘Connecting the Address Card EKAC10A to the Controller’ on page 2-6.
Serial module
µ chiller compact
70 64
88 44
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1.7 Outline of the Address Cards in the EKAC30A/60A/120A kits
Introduction The address card in the EKAC30A/60A/120A kits will enable the Daikin chillers to communicate with
the Gateway.
Address card kits
and applicable
chillers
The table below gives the address card kits and the applicable chillers:
Illustration The illustration below shows the dimensions of the address cards EKAC30A/60A/120A.
Connections into
the serial line
To connect the address card into the serial line the following connections have to be made:
from the address card to the chiller’s field rail (1)
from the field rail to the Gateway or another address card in the serial line (2).
(1) Refer to ‘Connecting the Address Card EKAC30A/60A/120A to the Field Rail’ on page 2-9.
(2) Refer to ‘Connecting an Address Card in the Serial Line’ on page 2-4.
The address card kit ... consist of ... Applicable chillers
EKAC30A one address card with connector
one connection wire to field rail.
EUWA15-30HD(Z)
EUWY15-30HD
EKAC60A one address card with connector
one connection wire to field rail.
EUWA*40-60KA
EUWA*40-60KAX
EUW*40-100KX
EKAC120A two address cards with connectors
one connection wire to field rail
one connection wire for connecting
PCB A to PCB B.
EUWA*80-120KA
EUWA*80-120KAXEUWA*160-200KX
EUW*120-200KX
43
705 5
G R O U N D
R X + / T X +
R X - / T X -
M1
JS2
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2
Part 2
Installation
Introduction The purpose of this part is to tell you how to install, connect and configurate the system. The chillers’
set up may differ slightly depending on the model.
Refer to the relevant Daikin chiller service manual if the screens described in this manual differ too
much from the screens on the chiller’s controller.
Overview This part contains the following chapters:
Chapter See ...
1 – Installing and Connecting the System page 2-3
2 – Configuration page 2-13
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1Part 2
1 Installing and Connecting the System
1.1 What Is in This Chapter?
Introduction The purpose of this chapter is to tell you how to set up the system. The troubleshooting chapter refers
to this chapter to check correct installation and wiring.
Precautions
Observe the following precautions:
Do not install the Gateway near power cables or radio-transmitting sources.
Do not touch the electronic components with your fingers when manipulating internal jumpers.
Thus, you will prevent stray currents, which could irreparably damage the components.
Earth the Gateway casing to the stud identified by the appropriate yellow label.
Connect all wires correctly because erroneous connection could damage the entire system.
Ensure that the Gateway is switched off prior to inserting the cables into the connectors.
Strictly follow the instructions on the use of the relevant program during the configuration phase.
Keep the communication cables to link the chillers away from power cables to avoid interference.
Before installing
the Gateway
Before installing the Gateway ensure you have installed the address cards correctly. Follow the
instructions in the installation manuals of the address cards or use the pages listed in the table below.
Overview This chapter covers the following topics:
Topic See ...
1.2 – Connecting an Address Card in the Serial Line page 2-4
1.3 – Installing the Address Card EKAC10A page 2-5
1.4 – Connecting the Address Card EKAC10A to the Controller page 2-6
1.5 – Connecting the Address Card EKAC10A to the Transfo page 2-7
1.6 – Installing the Address Card EKAC30A/60A/120A page 2-8
1.7 – Connecting the Address Card EKAC30A/60A/120A to the Field Rail page 2-9
1.8 – Connecting the Gateway to the Configuration Computer page 2-10
1.9 – Connecting the Gateway to the BMS page 2-11
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1.2 Connecting an Address Card in the Serial Line
Introduction An address card (EKAC10A) or the field rail of an address card (EKAC30A/60A/120A) can be
connected to:
the Gateway
another address card.
The serial line must be terminated with the resistor (120 Ω 1/4 W) between the TX/RX+ and
TX/RX- terminals of the address card situated at the end of the network.
Example The illustration below shows you a possible serial line connection to the Gateway.
Connecting an
address card in the
serial line
The table below shows where address cards must be connected in the serial line:
If you have to connect two address cards or field rails, use AWG20 or AWG22 shielded couple type
cables.
Connections The table below shows you which connections must be made:
Serial module
µ chiller compact
1
config.
Carel Net. relay fuse
modem
rs422/485
45
1 2 3
GND TX+RX+ TX-RX-
to serial line
G R O U N D
R X + / T X +
R X - / T X -
197198199
198 199197 field rail connection
screw connector
9-pole male
EKAC10A
EKAC30A
Gateway
If the chiller is…then connect the address card (EKAC10A) or the field
rail of the address card (EKAC30A/60A/120A) to ...
the first in line, the Gateway connector ’Carel Net.’.
the sole connection, the Gateway connector ’Carel Net.’.
not the sole connection and is not
the first in line,another address card or another field rail.
Gateway EKAC10A EKAC30A/60A/120A
9-pole male screw connectors field rail
1. GND 1. GND 197. GND
4. TX+ 2. RX+ 198. RX+
5. TX- 3. RX- 199. RX-
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11.3 Installing the Address Card EKAC10A
Introduction Before the address card EKAC10A can be connected in the serial line, the EKAC10A module must be
installed on the chiller’s DIN-rail.
Installing the
address card
The illustration below shows you how to install the address card EKAC10A.
Installation
procedure
Follow the steps in the table below to install the address card:
Removing theaddress card Follow the steps in the table below should you wish to remove the address card:
Se r i al mo d ul e
µc hi l l e r c o mp ac t
Step Action
1 Turn the power off.
2 Place the address card on the upper side of the omega rail.
3 Push the bottom side of the address card until you hear it click into place.
The address card is now locked onto the omega rail.
Step Action
1 Turn the power off.
2 Release the grey clip at the bottom of the address card using a screwdriver.
3 Pull the bottom side of the address card upwards.
The address card is now free from the rail.
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1.4 Connecting the Address Card EKAC10A to the Controller
Introduction The address card EKAC10A must be connected to the chiller ’s controller.
Installation
procedure
Follow the steps in the table below to connect the address card to the controller:
Step Action Illustration
1 Push the crimp terminal of the connection wire
in the 7-pin header on the upper side of the
address card.
2 Disconnect the cable from the right upper
socket on the rear panel of the controller.
3 Insert the crimp terminal into the 7-pin socket
as indicated in the illustration.
4 Reconnect the cable into the right upper
socket.
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11.5 Connecting the Address Card EKAC10A to the Transfo
Introduction The address card EKAC10A must be connected to the chiller ’s transfo for power supply.
Illustration The illustration below shows you how to connect the address card to the transfo.
Installation
procedure
Follow the steps in the table below to connect the address card to the transfo:
Serialmodule
µ chiller compact
12 11
Gpower supply
G0
50 51
50 51
fuse
Step Action
1 Connect screw connection 11 G0 on the address card to terminal 50 on the main rail. Use
the supplied unfused connection wire.
2 Connect screw connection 12 G on the address card to terminal 51 on the main rail. Use
the supplied fused connection wire.
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1.6 Installing the Address Card EKAC30A/60A/120A
Introduction Before the address card can be connected in the serial line, first it must be installed on the PCB(s).
Installing the
address card
The illustration below shows you how to install the address card EKAC30A/60A/120A.
Installation
procedure for
EKAC30A/60A
Follow the steps in the table below to install the address card:
Installation
procedure for
EKAC120A
Units with two circuits have two PCBs. You have to install an address card on each PCB.
Follow the steps in the table below to install the address card:
Connections
between PCB A and
PCB B (EKAC120A)
PCB A and PCB B of the chillers with 2 circuits must be connected as listed below:
Step Action
1 Turn the power off before installing the address card.
2 Handle the address card by its edges as indicated in the illustration above.
3 Carefully place the address card with the socket into the 7-pin PCB header.
Step Action
1 Turn the power off before installing the address card.
2 Handle the address card by its edges as indicated in the illustration above.
3 Carefully place the address card with the socket into the 7-pin PCB header (PCB A).
4 Repeat steps 2 and 3 to install the address card on PCB B.
5 Connect the address card of PCB A to the address card of PCB B as listed below. Always
use the same screw connectors.
PCB A wire colour PCB B
GROUND red GROUND
RX+/TX+ white RX+/TX+
RX-/TX- brown RX-/TX-
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11.7 Connecting the Address Card EKAC30A/60A/120A to the Field Rail
Introduction The address card EKAC30A/60A/120A has to be connected to the field rail and this field rail has to be
connected in the serial line.
EKAC30A/60A to
the field rail
The figure below shows you how to connect the address card EKAC30A/60A to the field rail.
EKAC120A of
PCB B to the field
rail
The figure below shows you how to connect the address card EKAC120A of PCB B to the field rail.
Connections of the
EKAC30A/60A/120A
Connect as listed below:
G R O U N D
R X + / T X +
R X - / T X -
197198199
198 199197 field rail terminal
G R O U N D
R X + / T X +
R X - / T X -
PCB BPCB A
198 199197
197198199
field rail terminal
Connection on the screw
connectorwire colour Connection on the field rail
GROUND grey 197
RX+/TX+ white 198
RX-/TX- brown 199
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2
1.8 Connecting the Gateway to the Configuration Computer
Introduction To configurate the Gateway, you must first make a connection between the Gateway and the
configuration computer. Disconnect the link to the PC after configuration.
Illustration The illustration below shows you how to connect the Gateway to the configuration computer.
The wires 2 and 3 are crossed.
Different cables The configuration computer connection to the Gateway is made via the 9-pin male connector at the
back of the Gateway labelled ‘config.’. Two different cables can achieve connection:
a cable with a 9-pin female connector at both ends
a cable with one 9-pin female connector (to the Gateway) and one 25-pin female connector (to the
computer).
A program on a disk delivered with the kit can start the initial configuration once the cable connects
the Gateway to the computer.
Refer to ‘Gateway Software Configuration (MS–DOS program)’ on page 2-17.
Cable with one
25-pin female
connector
Make the connections as listed below:
Cable with two
9-pin female
connectors
Make the connections as listed below:
2
config.
Carel Net . rel ay fuse
modem
rs422/485
3 53
25
2375-p n
female
9-pin
female
GatewayConfiguration PC
Computer Gateway (connector labelled 'config.')
25-pin female cable end 9-pin female cable end
2. TX 2. RX
3. RX 3. TX
7. GND 5. GND
Computer Gateway (connector labelled 'config.')
9-pin female cable end 9-pin female cable end
3. TX 2. RX
2. RX 3. TX
5. GND 5. GND
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11.9 Connecting the Gateway to the BMS
Introduction There are two possibilities for connecting the BMS to the Gateway:
using the RS-232 standard (for BMS using BACnet or Modbus-Jbus protocol)
using the RS-485 standard (only for BMS using Modbus-Jbus protocol).
Illustration RS-232 The illustration below shows you how to connect with RS-232.
The wires 2 and 3 are crossed.
RS-232 connection
(Modbus-Jbus and
BACnet)
The RS-232 connection to the supervisory BMS in Modbus-Jbus and BACnet is standard. The
Gateway using the BACnet protocol has no other options to make a connection with the BMS.
Make the RS-232 connection at the Gateway side to the 9-pin male connector labelled ‘modem’.
Connections depend on which cable you use.
Refer to the specifications of the supervisory BMS for other possible connection types. However, theGateway only manages the TX and RX signals.
A 25-pin female
connector
Make the connections as listed below:
Two 9-pin female
connectors
Make the connections as listed below:
BMS
2
config.
Carel Net . relay f use
modem
rs422/485
3 5
237
325
25-pin
female
9-pin
female
Gateway
Supervisory system Gateway (connector labelled 'modem')
25-pin female cable end 9-pin female cable end
2. TX 2. RX
3. RX 3. TX
7. GND 5. GND
Supervisory system Gateway (connector labelled 'modem')
9-pin female cable end 9-pin female cable end
2. RX 3. TX
3. TX 2. RX
5. GND 5. GND
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Illustration RS-485 The illustration below shows you how to connect with RS-485.
RS-485 connection
(only for
Modbus-Jbus)
For connection between Gateway and BMS using the Modbus-Jbus protocol the possible connections
are listed below:
The RS-485 connection diagram can only be used by Modbus-Jbus.
BMS
1
config.
Carel Net . relay f use
modem
rs422/485
4 5
Gateway
9-pin
male
Supervisory BMS
Gateway (connector labelled
’RS-422/RS-485’)
9-pin male cable end
The pinning from the supervisory BMS side is
omitted because it changes depending on the
particular supervisory BMS being utilised.
1. GND
4. TX+/RX+
5. TX-/RX-
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12 Configuration
2.1 What Is in This Chapter?
Introduction The purpose of this chapter is to tell you how to configure the Gateway and how to address the chillers
with the controller.
Overview This chapter covers the following topics:
Topic See ...
2.2 – Gateway Hardware Configuration page 2-14
2.3 – Gateway Software Configuration (MS–DOS program) page 2-17
2.4 – How to Read or Adjust BMS Parameter Settings with the Small Daikin Control-
ler
page 2-19
2.5 – Settings: Direct and User Parameters in the Small Daikin Controller page 2-20
2.6 – How to Read or Adjust BMS Parameter Settings with the Large Daikin Con-troller
page 2-22
2.7 – e User Settings Menu in the Large Daikin Controller page 2-23
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2.2 Gateway Hardware Configuration
Introduction Configuration of the hardware must be performed to enable the Gateway:
to determine which connections towards the BMS and to the address cards there are used
to use the correct power supply.
Enabling the used
connections
To enable the connections that you want the Gateway to use, you have to set the jumpers A, B, C and
D on the Gateway PCB according to the table below:
Other jumper positions will lead to error codes and communication malfunction.
Locating the
jumpers
The illustration below shows the Gateway PCB with the 4 jumpers.
To enable ...place
jumper
in posi-
tion
then ... protocol
can be usedRemark
RS-232 serial port
(‘modem’) towards
the BMS
A 1–2 Modbus-Jbus orBACnet
This way the ‘RS-422/485’ modes and respective port are
disabled.
RS-422/485 serialport towards the
BMS
A 2–3 Modbus-Jbus orBACnet This way the RS-232 modesand the respective ‘modem’ portare disabled.
output communica-
tion RS-485 at the
‘RS-422/485’ port
from the Gateway to
the BMS
B 1–2 Modbus-Jbus You can only enable output
communication RS-485 when
jumper A is in position 2-3.
communication from
the Gateway to the
chillers’ network inRS-485 mode
C 1–2 Modbus-Jbus orBACnet
This function uses the output of
the ‘Carel. net’ port.
123
AB
123
C
D
123
NO NC
12C BUS OPTION
jumper A jumper B
jumper C
jumper D
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1Possible powersupply The Gateway can run off one of the following voltages: 24 VAC
120 VAC
240 VAC.
The Gateway itself uses 240 VAC 50/60 Hz.
Changing the
power supply
The illustration below shows the power supply on the PCB of the Gateway.
Changing to 24 or
120 VAC
Follow the instruction given below to change the 240 VAC to 24 or 120 VAC:
240V~
fuse
transformer
power
supply
unit24V~
1 2 0 V ~
Step Action
1 Disconnect the power cable from the mains.
2 Remove the Gateway cover.
3 Disconnect the cable end coming from the power supply and located at the position
marked with ’240 V~’.
4 Remove the cover from the position marked with:
’24 V~’ and place it over the free connection ( ’240 V~’) when you want to change to
24 VAC power supply.
’120 V~’ and place it over the free connection ( ’240 V~’) when you want to change to120 VAC power supply.
5 Connect the cable end, which you’ve disconnected in step 3, with the connection marked
with:
’24 V~’ when you want to change to 24 VAC power supply
’120 V~’ when you want to change to 120 VAC power supply.
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6 240 VAC and 120 VAC use the same fuse (on the Gateway PCB):
type T time-delay
nominal current 250 mA
nominal voltage 250 V
sizes 5 x 20.
When you change the power supply to 24 VAC then replace the fuse with a fuse with the
following specifications:
type T time-delay
nominal current 315 mA
nominal voltage 250 V
sizes 5 x 20.
7 Tighten the nuts of the cover and ensure the chassis is grounded again.
Step Action
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12.3 Gateway Software Configuration (MS–DOS program)
Introduction The Gateway must be configured before it can be used to transfer variables. Therefore a PC has to
be connected to the Gateway (1). The PC (field supplied) must have the following system
requirements: 3.0 or higher DOS operating system
RS–232 serial port.
(1) Refer to ‘Connecting the Gateway to the Configuration Computer’ on page 2-10.
Installation
procedure
To configure the Gateway from the PC follow the steps in the table below:
Parameter writing To write the parameters:
digitize for BACnet: a:\wrbaccnf parameter list
digitize for Modbus-Jbus: a:\writemb0 parameter list
Parameter list means the sequence of parameter selection with the following syntax:
parameter list =
Parameter reading To read the parameter selection:
digitize for BACnet: a:\rdbaccnf
digitize for Modbus-Jbus: a:\readmb0
The PC screen displays the present Gateway configuration in which the parameters depend on the
software version.
Step Action
1 Insert the disk.
2 Run the program writemb0 (for Modbus-Jbus) or wrbaccnf (for BACnet).
3 Configure the parameters (see parameter writing).
4 When the configuration is successful the following message appears ***GATEWAY PRO-GRAMMED*** on the display.
5 Restart the Gateway by pressing the Gateway reset button.
l i n e
p r i n t o
u t
a l a r m
1
a l a r m
2
r x t x r e s e t
Gateway
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Parameter
selections
The table below shows the possible parameter selections:
If you only digitize wrbaccnf (for BACnet) or writemb0 (for Modbus-Jbus) without parameters or if
certain parameters are not defined, the DOS program will display the correct syntax to be used.Parameter values must be separated from the next by means of a blank space.
These parameters are chosen in consultation with the supervisory BMS supplier.
Error messages
Refer to ‘Troubleshooting’ on page 4-1 should one of the following error messages appear on-screen:
***ERROR READING GATEWAY CONFIGURATION***
***ERROR SENDING GATEWAY CONFIGURATION***
Example
The example below is a possible configuration command for the site on page 3-14:
a:\writemb0/COM1 1 4 19200 9600 1 NONE
parameter Description Possible selection
com Communication serial port utilized by the configura-
tion computer.
/COM1- /COM2
net_address Address with which the BACnet or the Modbus-Jbus
sees the Gateway.
1-16
n_of_slaves Max. number of slaves (address cards) connected
1-8 (for BACnet) -1-16 (for Modbus-Jbus) to the
Gateway. The first slave is always address 1, thesuccessive ones are numbered incrementally.
1-8 (for BACnet) - 1-16
(for Modbus-Jbus)
carel _baud Baud rate of the address card/Gateway communica-
tion.
19200
gateway_baud Baud rate of the supervisory BMS/Gateway commu-
nication.
600 - 1200 - 2400 -
4800 - 9600
stop Bit stop in the supervisory BMS/Gateway communi-
cation.
1- 2
parity Parity in the supervisory BMS/Gateway communica-
tion.
NONE - ODD - EVEN
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12.4 How to Read or Adjust BMS Parameter Settings with the Small Daikin Controller
Addressing
procedure
To address the chillers using the address card EKAC10A, proceed as follows:
After 5 seconds the display starts flashing when no buttons are pressed.
You can exit at every step by leaving the buttons untouched for 1 minute. The modifications will
not be saved.
Refer to ‘Settings: Direct and User Parameters in the Small Daikin Controller’ on page 2-20 for an
overview of the parameters.
START
Enter the user-password 22 using theu andd buttons.
Presss.
Select the HA parameter using theu andd buttons.
Presss to display the value.
Do you want to
adjust the value?
Adjust the value using theu andd buttons.
Presss to display the parameter.
Pressp to save and exit.
STOP
Pressp for five seconds.
YES
NO
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2.5 Settings: Direct and User Parameters in the Small Daikin Controller
Introduction The grey-filled boxes relate to the chillers’ addressing procedure with address card EKAC10A.
Refer to ‘How to Read or Adjust BMS Parameter Settings with the Small Daikin Controller’ onpage 2-19.
Direct and user
parameters
The digital controller provides direct and user parameters:
direct parameters are used for the every day usage of the unit (for example to set the cooling and
heating temperature point and to read operational information)
user parameters provide advanced features (for example remote control).
Each parameter is defined by a code and a value.
How to access the
parameters
To access the parameters, proceed as follows:
Parameter overview In the table below you will find the description, the type, the code and the values of all of the
parameters:
Hold the ... button down
for five secondsto have access to … A password is …
s the direct parameters. not required.
p all parameters (direct and user). required. Use 22.
Description Type CodeDefault
Value Limit valuesStep
value
measurement unit (˚C or ˚F) user d 0 ˚C 0 or 1 1
cooling temperature set point direct r1 12.0 ˚C 7.0 ˚C to 25.0 ˚C 0.1 ˚C
cooling temperature difference direct r2 3.0 ˚C 0.1 ˚C to 11.0 ˚C 0.1 ˚C
heating temperature set point direct r3 40.0 ˚C 25.0 ˚C to 55.0 ˚C 0.1 ˚C
heating temperature difference direct r4 3.0 ˚C 0.1 ˚C to 11.0 ˚C 0.1 ˚C
outlet water temperature direct r6 read only — 0.1 ˚C
coil temperature direct r8 read only — 0.1 ˚C
not used — c4 10 — —
not used — c5 00 — —
not used — c6 0 — —
time delay between the pump
start-up and the compressor
start-up
user c7 20 s 0 to 150 s 1 s
time delay between the unit
shutdown and the pump shut-
down
user c8 20 min 0 to 150 min 1 min
total running hours of the com-pressor
direct c9 read only — 1 hour
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1
(1) Never lock the keyboard. Unlocking is not possible with the same password. Refer to "Unlocking
the Keyboard" in the service manual for small Daikin chillers ESIE98–06.
The following advanced functions are unavailable when you lock the keyboard:
Modifying direct and user parameters (parameters can be displayed but not modified).
Selecting cooling or heating mode.
Forcing a defrost cycle.
Resetting the timers.
Refer to the service manual for small Daikin chillers ESIE98–06 for more information how to changethe parameters.
not used — ca — — —
timer threshold for mainte-
nance warning
user cb 0 hours
(disabled)
0 to 10 000 hours 100 hours
total running hours of the pump direct cv read only — 1 hour
activation period of the buzzer user p4 1 min 0 min: buzzer
disabled
1-14 min:
buzzer
activation
period
15 min: buzzer
activated until
m button ispressed
1 min
remote cool/heat user h6 0 0 or 1 1
remote start/stop user h7 0 0 or 1 1
controller keyboard lock (1) user h9 1 0 or 2: locked and
1 or 3: unlocked
1
unit’s serial address user ha 1 1 to 16 1
not used — hb — — —
Description Type CodeDefault
ValueLimit values
Step
value
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2.6 How to Read or Adjust BMS Parameter Settings with the Large Daikin Controller
Addressing
procedure
To address the chillers using the address card EKAC30A/60A/120A, proceed as follows:
(1) The display shows a screen of the last menu used.
START (1)
Press the USER SETTINGS menu-buttone.
Enter the password using theh button.
Press thej button.
Select screen 2 (see page 2-23) using theh button.
Change "BMS CARD INSTALLED" to "Y"using theh button.
Select the parameter BMS CARD INSTALLED using thej button.
want to save the
Pressj until the cursor stands in the left upper corner.
Select screen 5 (see page 2-24) and 6 (see page 2-25) using theh button.
YES
NO
Adjust the parameters in screen 5 (see page 2-24) and 6 (see page 2-25).
Do you
modifications?
STOP
Pressj until the cursor stands in the left upper corner.
Press any menu-button butj to leave the user settings menu.
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12.7 e User Settings Menu in the Large Daikin Controller
Introduction The grey-filled boxes relate to the chillers’ addressing procedure with address cardEKAC30A/60A/120A (1).
You need the password to enter this menu. The units leave the factory with password 1914. You can
also create your own password (2).
(1) Refer to ‘How to Read or Adjust BMS Parameter Settings with the Large Daikin Controller’ on
page 2-22.
(2) Refer to the relevant Daikin chiller service manual.
Menu description This menu allows a full customizing of the units and displays the following nine screens:
Screen 1 You need to enter the correct password before you can consult the screens in this menu:
Screen 2 This screen allows you to activate the remote control by BMS:
Screen No. Display Description
1 ENTER PASSWORD To enter the password.
2 REMOTE CONTROL To activate remote control or BMS control.
3 CONTROL SETTINGS To adjust and activate manual control mode.
4 THERM. SETTINGS To adjust the thermostat settings.
5 BMS SETTINGS To adjust the BMS settings
6 BMS BOARD
SETTINGS
To adjust the BMS board settings
7 LEAD-LAG SETTINGS To adjust the lead-lag settings.
8PUMP CONTROL
To control the pump.
9 SETPOINT PASSWORD To assign password protection to the set points menu.
Line No. Display Description
1 ENTER PASSWORD screen title
2 PASSWORD: 0000 1914
Line No. Display DescriptionPossible set-
tings
1 REMOTE CONTROL screen title
2 REMOTE ON/OFF to activate remote start/stop Y/N
3 BMS CARD INSTALLED used to define if there is a BMSaddress card
Y N
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Screen 3 This screen allows you to modify the control settings:
Screen 4 This screen allows you to modify the thermostat parameters:
Screen 5 This screen allows you to activate the PC control mode and to modify the BMS settings:
This screen will only be displayed if you mentioned that the optional BMS card is installed. You can do
this in screen 2.
Line No. Display Description Possible settings
1 CONTROL SETTINGS screen title
2 MODE to select the control mode INLET WATER CONTROL
OUTLET WATER CONTROL
MANUAL CONTROL
3 CIR1 /C1R2 capacity step circuit 1 / 2 (manual
mode)
0/25/40/70/100 %
4 F1/F2 OFF/LOW/MED/HIGH
Line No. Display DescriptionLower
limit
Upper
limitStep Default
1 THERM. SETTINGS screen title
2 STPLENGTH ( C) step length (a) 0.4 2.0 0.1 1.5
3 STEPDIFFERENCE ( C) step difference (b) 0.2 0.8 0.1 0.5
4 LOADUP (30 s) load up time (s) 15 300 1 180
5 LOADDOWN load down time (s) 15 300 1 20
Line No. Display DescriptionPossible
settings
1 BMS SETTINGS screen title
2 BMS CONTROL ALLOWED to allow BMS control Y N
3 ADDRESS PCB A
ADDRESS PCB B
used to address circuits of the unit towards
the Gateway
00-31
4 PROTOCOL indicates the communication protocol CAREL
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1Screen 6 This screen allows you to adjust the BMS board settings:
This screen will only be displayed if you mentioned that the optional BMS card is installed. You can dothis in screen 2.
Screen 7 This screen allows you to adjust the lead-lag settings:
Screen 8 This screen allows you to force the pump via the chiller ’s controller and to adjust the pump lead andlag time:
Line No. Display Description Possible settings
1 BMS BOARD
SETTINGS
screen title
2 SERIAL BOARD to select the communication protocol
between the BMS and the Gateway
RS485 (default)
RS422
3 BAUD RATE to select the baud rate for
communication between the BMS card
and the Gateway
19200 BPS (default)
9600
4800
2400
1200
Line No. Display DescriptionPossible
settings
1 LEAD-LAG SETTING screen title
2 LEAD-LAG MODE to select whether circuit 1 or circuit 2 starts
up first
AUTO
C1>C2
C2>C1
3 LEAD-LAG HOURS time after which the other circuit should start
at next start-up
100-1000 H
4 EQUAL START-UP to select if both circuits should go up in
capacity alternatingly
Y/N
Line No. Display DescriptionPossible
settings
1 PUMP CONTROL screen title
2 PUMP LEAD TIME time to run the water pump before starting
up the chiller
0-180 S
3 PUMP LAG TIME time to keep the pump on, after stopping the
chiller
0-180 S
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Screen 9 This screen allows you to assign password protection to the set point menu:
Line No. Display DescriptionPossible
settings
1 SETPOINT PASSWORD screen title
2 PASSWORD NEEDED TO
CHANGE SETPOINTS
assign password protection to set point
menu
Y/N
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Part 3
Functional Description
Introduction The purpose of this part is to give some general and some more specific information about the used
protocols, the implemented commands and the databases.
Overview This part contains the following chapters:
Chapter See ...
1 – General page 3-3
2 – Implemented Commands in the Gateway page 3-7
3 – Database page 3-11
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4
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1Part 3
1 General
1.1 What Is in This Chapter?
Introduction The purpose of this chapter is to give some general information and some references on the used
protocols.
Overview This chapter covers the following topics:
Topic See ...
1.2 – Generalities on the Protocols page 3-4
1.3 – References to ASHRAE Manual of the BACnet Protocol page 3-5
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1.2 Generalities on the Protocols
BACnet
conformities
The reference to "BACnet protocol" has been defined in official documentation:
ANSI ASHRAE – Standard 135-1995
Approved by the National Standards Institute – December 19, 1995
The configuration is of the point-to-point type in RS-232.
Modbus-Jbus
conformities
The Modicon Modbus protocol implemented in the Gateway complies with the content of the
document:
Modicon Modbus Protocol
Reference Guide
March 1992, PI-MBUS-300 Rev. D
The implemented Modbus-Jbus protocol is of the RTU type based on times. The configuration is of the
multi-drop in RS-485 or point-to-point RS-232. The address sent into the Modbus packet addresses
the Gateway.
BACnet
communication
parameters
The communication parameters between the supervisory system using the BACnet protocol and the
Gateway, selectable by the user, are listed below:
Modbus-Jbus
communication
parameters
The communication parameters between the supervisory system using the Modbus-Jbus protocol and
Gateway, selectable by the user, are listed below:
Parameter Selectable value
baud rate 600 – 1200 – 2400 – 4800 – 9600
word bit no. 8 (fixed)
parity NONE - ODD - EVEN
stop bit no. 1 – 2
Parameter Selectable value
baud rate 600 – 1200 – 2400 – 4800 – 9600
word bit no. 8 (fixed)
parity NONE - ODD - EVEN
stop bit no. 1 – 2
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11.3 References to ASHRAE Manual of the BACnet Protocol
ASHRAE manual All pages mentioned below refer to the ASHRAE manual of the BACnet.
Characteristics BACnet characteristics are listed in the table below:
Characteristics of
the Gateway
The Gateway ”Conformity Class, Object and Service” characteristics are listed in the table below:
Errors and
messages
BACnet errors and messages are listed in the table below:
Examples BACnet examples are listed in the table below:
Chapter Page
General information on the protocol structure page 8-13
Detail on the protocol application layer page 14-24
Description of the network layer page 50-73
Data link layer Point-to-point page 103-134
Description of the BACnet "objects" from page 138
Chapter Page
Error codes page 313-317
Coding of the BACnet messages page 322-334
Coding of the elements that constitute the mes-
sages (tags)
page 334-347
Formal description of the messages from page 348
Chapter Page
Error codes page 313-317
Coding of the BACnet messages page 322-334
Coding of the elements that constitute the mes-
sages (tags)
page 334-347
Formal description of the messages from page 348
Chapter Page
Example of a BACnet message of the "Read-
Property" type
page 467
Example of a BACnet message of the "Write-
Property" type
page 475
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1Part 3
2 Implemented Commands in the Gateway
2.1 What Is in This Chapter?
Introduction The purpose of this chapter is to provide further information concerning the implemented commands
in the Gateway.
Overview This chapter covers the following topics:
Topic See ...
2.2 – Protocol page 3-8
2.3 – Implemented Commands page 3-9
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2.2 Protocol
BACnet Implemented BACnet protocol commands correspond to the Conformity Classes 1 and 2, namely
ReadProperty and WriteProperty. With these functions, it is possible to read and write a single value
at a time.
Modbus-Jbus The software commands of the Modbus-Jbus protocol, ensure the compatibility between Modbus and
Jbus.
The data representation of the Modbus-Jbus protocol:
digital data
analogue data.
Digital data
Modbus-Jbus
Data is coded by a single digit:
'0' for OFF
'1' for ON.
All the digital variables are assigned to bit of consecutive registers, each one having:
the lower-address variable assigned to the less significant bit
the higher-address variable assigned to the most significant bit.
Analogue data
Modbus-Jbus
An analogue value is represented by a 16-bit register in binary notation in complement on two with:
the most significant part on the byte of higher address
the less significant part on the byte of lower address.
Example: the value 10.0 is represented as 0064H
The Gateway operates on registers where one register must be considered at 16-bit.
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12.3 Implemented Commands
In the Gateway
program
The implemented commands in the Gateway program are listed below:
Due to the variety of chillers with installed address cards no distinction is made between input
variables (read only) and output variables (read/write) so that the knowledge of the database and
its management depends on the part present on the supervisory system.
Due to the generality of the system, the Gateway answers in the same way to various Modbuscommands.
Modbus command Meaning Notes
1 read coil/input status obtains current status (ON/OFF) of a group of
logic coils or discrete input
2 read coil/input status obtains current status (ON/OFF) of a group of
logic coils or discrete input
3 read holding or input
registers
obtains current binary value in one or more
holding registers
4 read holding or input
registers
obtains current binary value in one or more
holding registers
5 force single coil forces single coil to ON or OFF states
6 preset single register places a specific binary value into a holding
register
15 force multiple coils forces a series of consecutive logic coils to
defined ON or OFF states
16 preset multiple regis-
ters
places specific binary values into a series of
consecutive holding registers
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1Part 3
3 Database
3.1 What Is in This Chapter?
Introduction The purpose of this chapter is to give further information about on database creation.
Overview This chapter covers the following topics:
Topic See ...
3.2 – Database creation page 3-12
3.3 – The Address Card EKAC10A Database page 3-16
3.4 – The Address Card EKAC30A Database page 3-18
3.5 – The Address Card EKAC60A Database page 3-21
3.6 – The Address Card EKAC120A Database page 3-24
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3.2 Database creation
Introduction The supervisory BMS and the address cards communicate through a fixed set of variables, also called
address numbers.
These variables are transferred from:
each address card database to the Gateway, where they are put in the Gateway database
the Gateway database to the supervisory BMS.
From the address
card to the Gateway
The variables from each address card database can be digital, analogue or integer. The maximum
number of transferable variables from an address card to the Gateway is given below:
From the Gateway
to the supervisory
BMS
The BACnet and Modbus-Jbus protocols do not distinguish between analogue and integer variables.
Therefore variables leaving the Gateway to the BMS can only be digital or analogue.
The analogue and integer variables of the address card database are in the Gateway database put
together in the analogue variables. The old analogue variables are numbered from 1 to 128 and the
old integer variables from 129 to 256.
The maximum number of transferable variables from the Gateway to the supervisory BMS is given
below:
If requested by the supervisory BMS, the Gateway sends out the variables that are not present on the
machine with the value 0.
This way, extra inline traffic is created, but the generality of the application is saved. The database is
dimensioned for the address card with the largest number of variables.
Example EKAC10A
database
The table below shows an example of a digital, an analogue and an integer variable for the address
card EKAC10A:
Variable type Maximum number
digital 200
analogue 128
integer 128
Variable type Maximum numberCorresponding BACnet
object
digital 200 binary value
analogue 256 analogue value
Variable
type
Address
number
Read/
write
Parameter
CommentDirect/
userName Description
digital 47 r/w U H7 Enable/disable "remote on/off"
digital input
1=enable
0=disable
analogue 13 r/w D r4 Heating difference
integer 38 r/w U H9 Lock of user & direct parameters 0=keyboard disabled
1=keyboard enabled
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1Gateway databasecreation To create a database that can be implemented in a Modbus-Jbus or a BACnet supervisor proceed asfollows: The digital variables are transferred with their addresses to the Gateway (Modbus-Jbus or BACnet)
database. In the Modbus-Jbus database they are read using the commands 1 or 2 (1).
The analogue variables are transferred with their addresses to the Gateway (Modbus-Jbus orBACnet database). In the Modbus-Jbus database they are read using the commands 3 or 4 (1).
The integer variables are transferred with their addresses on top of the analogue variables to the
Gateway (Modbus-Jbus or the BACnet) database. In the Modbus-Jbus database they are read
using the commands 3 or 4 (1).
(1) Refer to ‘Implemented Commands’ on page 3-9.
Gateway database
diagram
The creation of a Gateway database from address card databases (slave n databases) is given below.
Modbus supervisor In the Modbus supervisor, the operator must reserve 25 bytes for the digitals (200 digital variables)and 512 bytes for the analogues (128 analogue variables and 128 integer variables) for a total of 456
variables for each address card.
Digital variables
Slave n database (for each PCB address) Gateway database
Digital variables
1
200
1
Analogue variables1
200
400...
...
(n-1)*200
(n-1)*256
(n-1)*256+128
Analog variables1
128
Integer variables1
128
256
512
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Address list
creation illustration
The illustration below shows the Daikin chillers and the BMS.
Gateway database
creation: digital
variables
The Gateway database creation for the digital variables in the illustration above is herewith given:
Serial module
µ chiller compact
l i n e
p r i n t o
u t
a l a r m
1
a l a r m
2
r x t x r e s e t
Gateway
BMS
EUWY10HCW1
EUWAT50KAY1
EUWT200KXY1
Address 2
Address 1
PCB A: Address 3
PCB B: Address 4
UnitAddress towards
the Gateway
Assigned address in the Gateway database
(digital variables)
EUWY10HCW1 1 001→ 200
EUWAT50KAY1 2 201→ 400
EUWT200KXY1
PCB A
PCB B
3
4
401→ 600
601→ 800
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1Gateway databasecreation: analoguevariables
The Gateway database creation for the analogue variables in the illustration above is herewith given:
UnitAddress towards
the BMS
Assigned address in
the Gateway database
(analogue variables)
Variable type in the
address card database
EUWY10HCW1 1 001→ 128
129→ 256
Analogue
Integer
EUWAT50KAY1 2 257→ 384
385→ 512
Analogue
Integer
EUWT200KXY1
PCB A
PCB B
3
4
513→ 640
641→ 768
769→ 896
897→
1025
Analogue
Integer
Analogue
Integer
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3.3 The Address Card EKAC10A Database
Introduction The BMS or supervisory system and the address card communicate through a fixed set of variables,
also called address numbers. Information about the digital, integer and analogue variables that the
BMS or supervisory system can read from, or write to, the chiller’s address card is given in this section.
Digital variables The table below shows the digital variables:
Parameter CommentAddress Read /write
Direct/ user Name Description EUWA5-10HB(Z)
EUWY5-10HB*
1 r/w Cooling or Heating 1=cooling 0=Heating
2 r/w On or off 1=on 0=off
5 r H1 Alarm: high pressure or discharge protector orovercurrent
1= alarm 0=no alarm
6 r L1 Alarm: evaporating temperature thermostat 1= alarm 0=no alarm
8 r FL Alarm: flow switch 1= alarm 0=no alarm
9 r E3 Alarm Ambienttemperature
Coiltemperature
10 r E2 Alarm
11 r E1 Alarm
12 r n1 Warning: compressor requires maintenance 1= warning 0=no warning
13 r EP Alarm: EEPROM defective 1= alarm 0=no alarm
14 r EE Alarm: EEPROM defective 1= alarm 0=no alarm
15 r EL Alarm: power supply has unusual noise 1= alarm 0=no alarm
17 r d1 Defrost cycle 1= active 0=not active
18 r r1 Warning: defrost cycle not completed 1= warning 0=no warning
19 r A1 Alarm: anti-freeze 1= alarm 0=no alarm
21 r EO Alarm: supply voltage is high 1= alarm 0=no alarm
22 r EU Alarm: supply voltage is low 1= alarm 0=no alarm
25 r Output of pump 1=on 0=off
26 r Output of compressor 1=on 0=off28 r Output of reversing valve - 1=on 0=off
29 r Output of alarm 1=on 0=off
30 r Output of fan 1=on 0=off
31 r Input of high pressure or discharge protector orovercurrent alarm
1= closed 0=open
32 r Input of evaporating temperature thermostat alarm 1= closed 0=open
33 r Input of remote on/off 1= closed 0=open
40 r/w U /d Measurement unit of temperature
47 r/w U H7 Enable/disable “remote on/off” digital input 1=enable 0=disable
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3.4 The Address Card EKAC30A Database
Introduction The BMS or supervisory system and the address card communicate through a fixed set of variables,
also called address numbers. Information about the digital, integer and analogue variables that the
BMS or supervisory system can read from, or write to, the chiller’s address card is given in this section.1. If there is referred to a circuit the following syntax is used:
X/Y: circuit X of EUWA/Y 15-20HB(Z): these chillers have a maximum of 2 circuits
circuit Y of EUWA/Y25-30HB(Z): these chillers have a maximum of 3 circuits
2. For all possible values of user settings, refer to the chiller ’s operation manual.
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1Digital variables The table below shows the digital variables:CommentsAddress Read
/writeDescription
EUWA15-30HB(Z) EUWY15-30HB
1 r Digital input 1 Safety circuit 1/1
2 r Digital input 2 Safety circuit -/23 r Digital input 3 Safety circuit 2/3
4 r Digital input 4 - Remote cooling/heatingselection
5 r Digital input 5 Flow switch
6 r Digital input 6 - Defrost circuit 1/1
7 r Digital input 7 - Defrost circuit -/2
8 r Digital input 8 - Defrost circuit 2/3
9 r Digital input 9 Dual setpoint
10 r Digital input 10 Remote on/off
11 r Digital input 11 Reverse phase protector
12 r Digital output 1 Compressor 1/1
13 r Digital output 2 Compressor -/2
14 r Digital output 3 Compressor 2/3
15 r Digital output 4 LP bypass circuit 1/1
16 r Digital output 5 LP bypass circuit -/217 r Digital output 6 Pump
18 r Digital output 7 General Alarm
19 r Digital output 8 System on
20 r Digital output 9 Fanspeed 1 (ry1)
21 r Digital output 10 Fanspeed 2 (ry2)
22 r Digital output 11 Fanspeed 3 (ry3)
23 r Digital output 12 Lp bypass circuit 2/3
24 r Digital output 13 Evaporator heater Reversing valve
25 r Cooling/heating mode - 0=heating 1=cooling
26 r Unit status 1=on 0=off
27 r Freeze up circuit 1/1 active 1=yes 0=no
28 r Freeze up circuit -/2 active 1=yes 0=no
29 r Freeze up circuit 2/3 active 1=yes 0=no
30 r Circuit 1/1 safety active 1=yes 0=no
31 r Circuit -/2 safety active 1=yes 0=no
32 r Circuit 2/3 safety active 1=yes 0=no
33 r Manual mode active 1=yes 0=no
37 r Load up timer active 1=not zero 0=zero
38 r Load down timer active 1=not zero 0=zero
39 r Start timer active 1=not zero 0=zero
40 r Flow start timer 1=not zero 0=zero
41 r Flow stop timer 1=not zero 0=zero
42 r Guard timer compressor 1/1 active 1=not zero 0=zero
43 r Guard timer compressor -/2 active 1=not zero 0=zero
44 r Guard timer compressor 2/3 active 1=not zero 0=zero
45 r Anti-recycling time compressor 1/1 active 1=not zero 0=zero
46 r Anti-recycling time compressor -/2 active 1=not zero 0=zero
47 r Anti-recycling time compressor 2/3 active 1=not zero 0=zero
48 r Defrost busy compressor 1/1 - 1=yes 0=no49 r Defrost busy compressor -/2 - 1=yes 0=no
50 r Defrost busy compressor 2/3 - 1=yes 0=no
51 r Compressor 1/1 off for defrost of other circuit - 1=yes 0=no
52 r Compressor -/2 off for defrost of other circuit - 1=yes 0=no
53 r Compressor 2/3 off for defrost of other circuit - 1=yes 0=no
54 w On-off command If 1 is written, then toggle status of the unit.After this action the controller resets this parameter
55 w Cool-heat selection command - If 1 is written, then togglestatus of the unit. After thisaction the controller resets thisparameter
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Integer variables The table below shows the integer variables:
Analogue variables The table below shows the analogue variables:
CommentAddress Read/ write
Description
EUWA15-30HB(Z) EUWY15-30HB
1 r Actual step number Actual step number2 r Enable of remote chiller-heat pump User setting
3 r Enable of remote on/off User setting
4 r Enable write BMS User setting
5 r Unit type 0=EUWA151=EUWA202=EUWA253=EUWA30
4=EUWY155=EUWY206=EUWY257=EUWY30
6 r Refrigeration type 0=R22 1=R407C
7 r Manufacturer number 1 First digit
8 r Manufacturer number 2 Second digit
9 r Manufacturer number 3 Third digit
10 r Manufacturer number 4 Fourth digit
11 r Manufacturer number 5 Fifth digit
12 r Manufacturer number 6 Sixth digit
13 r Manufacturer number 7 Seventh digit14 r/w Total steps number User setting
15 r/w Manual setting of compressor 1/1 User setting in manual mode
16 r/w Manual setting of compressor -/2 User setting in manual mode
17 r/w Manual setting of compressor 2/3 User setting in manual mode
18 r/w Manual setting of fans 0=very high, 1=high, 2=medium , 3=low
19 r/w Load up time User setting
20 r/w Load down time User setting
21 r/w Running mode 0=auto, 1=manual
27 r Water/air-cooled unit 0=air-cooled unit1=water-cooled unit
28 r Cooling only/heat pump unit 0=cooling only1= heat pump
29 r Uniq