BMS option for Daikin water chillers

8/19/2019 BMS option for Daikin water chillers

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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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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

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Gateway

BMS water supply

lights

elevators

...

Daikin chiller

Daikin chiller

Daikin chiller

Gateway


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Part 1 – System Outline 1–1

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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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1–2 Part 1 – System Outline


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ESIE99–03 System Outline


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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


1.2 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

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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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1.3 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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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:

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G a t e w a y

G a t e w a y

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18

7105.4

2020

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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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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.

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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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Part 2 – Installation 2–1

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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


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


Installation

procedure for

EKAC120A

Units with two circuits have two PCBs. You have to install an address card on each PCB.


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


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.')


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


Two 9-pin female

connectors


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')


2. TX 2. RX

3. RX 3. TX

7. GND 5. GND

Supervisory system Gateway (connector labelled 'modem')


2. RX 3. TX

3. TX 2. RX

5. GND 5. GND


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2

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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3

2

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5

12 Configuration


Introduction The purpose of this chapter is to tell you how to configure the Gateway and how to address the chillers

with the controller.


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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Configuration ESIE99–03


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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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5

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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2

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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2

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

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 — —



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

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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2

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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3

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4

5

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


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


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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2

Screen 9 This screen allows you to assign password protection to the set point menu:


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 3–1

4

3

4

5

3

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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ESIE99–03

3–2 Part 3 – Functional Description

3


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ESIE99–03 General


33

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5

1Part 3

1 General


Introduction The purpose of this chapter is to give some general information and some references on the used

protocols.


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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General ESIE99–03


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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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5

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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33

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5

1Part 3

2 Implemented Commands in the Gateway


Introduction The purpose of this chapter is to provide further information concerning the implemented commands

in the Gateway.


Topic See ...

2.2 – Protocol page 3-8

2.3 – Implemented Commands page 3-9


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Implemented Commands in the Gateway ESIE99–03


3

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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5

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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Implemented Commands in the Gateway ESIE99–03


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5

1Part 3

3 Database


Introduction The purpose of this chapter is to give further information about on database creation.


Topic See ...

3.2 – Database creation page 3-12

3.3 – The Address Card EKAC10A Database page 3-16





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Database ESIE99–03


3

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)



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

BMS option for Daikin water chillers

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