Daikin EKBMSMBA User manual

INSTALLATION MANUAL
Gateway
EKBMSMBA
EKBMSBNA

1
Serial module
µ chiller
compact
line
print out
alarm 1 alarm 2 rx tx reset
Gateway
BMS

1
Gateway Installation manual
READ THIS MANUAL ATTENTIVELY BEFORE
STARTING UP THE UNIT. DO NOT THROW IT AWAY.
KEEP IT IN YOUR FILES FOR FUTURE REFERENCE.
IMPROPER INSTALLATION OR ATTACHMENT OF
EQUIPMENT OR ACCESSORIES COULD RESULT IN
ELECTRIC SHOCK, SHORT-CIRCUIT, LEAKS, FIRE OR
OTHER DAMAGE TO EQUIPMENT. BE SURE ONLY TO
USE ACCESSORIES MADE BY DAIKIN THAT ARE
SPECIFICALLY DESIGNED FOR USE WITH THE
EQUIPMENT AND HAVE THEM INSTALLED BY A
PROFESSIONAL.
IF UNSURE OF INSTALLATION PROCEDURES OR
USE, ALWAYS CONTACT YOUR DAIKIN DEALER FOR
ADVICE AND INFORMATION.
INTRODUCTION
Thank you for purchasing the Gateway EKBMSMBA or
EKBMSBNA Kit. This Gateway will enable you to communicate
with your chiller or chillers through a Building Management
System (BMS) or other supervisory system. More specifically, it
functions as a translator between the BMS or supervisory system
and the address cards of the actual chiller or multiple chillers.
As such, the Gateway ensures the connection of all address cards
— and thus also of the chillers — with systems that can
communicate in Modbus or BACnet protocol.
YOUR GATEWAY KIT
The kit you have just purchased consists of:
■1 Gateway
■1 PC diskette with an MS-DOS-formatted program for the initial
configuration of the Gateway
■a cable terminal (resistor)
GENERAL OVERVIEW OF THE SYSTEM
Different parts of the communication network
The communication network consists of two major players:
■The Building Management System or supervisory system.
■The chiller or multiple chillers.
The BMS or other supervisory system is able to communicate with
the chillers through two communication devices:
■The Gateway, a separate device that functions as a translator
between the Modbus/BACnet signals of the BMS or
supervisory system and the protocol used by the chiller’s
address card.
■The address card, a card placed on each PCB of the chiller or
a module placed inside the switchbox, depending on the range
of the chiller. It identifies the chiller. The Gateway can
communicate with up to 16 address cards using the Modbus-
Jbus protocol or up to 8 address cards using the BACnet
protocol. Mind that each PCB needs one address card!
(Refer to figure 1.)
DESCRIPTION OF THE GATEWAY
Technical data
■Intel 8032 microprocessor, 12 MHz
■240Vac factory standard power supply (can be changed into
24Vac or 120Vac)
■resident program, EPROM, 64 KB
A front view: Keys and LED’s
Key Purpose
print out No function
reset Press this key to reset the Gateway. It will restart the internal
configuration and external inquiry process of the address cards
LED Colour Indication
line yellow Power supply on
alarm 1 red Error in the configuration stored in the buffered RAM
alarm 2 red Malfunction in the communication between thegateway and the
address card, probably due to an inconsistency with the initial
configuration
rx green Communication OK (blinking)
tx green Communication OK (blinking)
A rear view: Connectors
The rear panel of the gateway has the following series of
connectors:
Connector name Connects to… Type
modem BMS/supervisory system with RS-232 standard 9 standard way male
RS-422/485 BMS/supervisory system with RS-485 standard 9 standard way female
config. Configuration PC 9 standard way male
Carel Net. Address cards with RS-485 standard 9 standard way female
fuse
line
print out
alarm 1 alarm 2 rx tx reset
Gateway
config.
Carel Net. relay fuse
cod.
modem
rs422/485
EKBMSMBA
EKBMSBNA

2
Dimensions
HOW TO CHANGE THE POWER SUPPLY
Introduction
You can set the power supply to either one of the following:
■240Vac
■120Vac
■24Vac
The Gateway uses 240Vac 50/60 Hz current.
Be extremely careful when you change the power supply.
Follow the instructions given below rigorously.
Changing From 240Vac to 24Vac or to 120Vac
1 Disconnect the power cable from the mains.
2 Remove the cover.
3 Remove the faston with the lead coming from the power supply
placed in the position marked with the serigraph 240V~ (see
figure).
4 Remove the faston cover from the position marked with the
serigraph 24V~ (to change to 24Vac supply) or 120V~ (to
change to 120Vac supply) and place it in the free faston
terminal (serigraph 240V~).
5 Connect the faston with the cable coming from the power
supply to the faston terminal marked with the serigraph 24V~
(to change to 24Vac supply) or 120V~ (to change to 120Vac
supply).
6 If you want to change the power supply to 24Vac, replace the
fuse located on the Gateway (type T time-delay, nominal
current 250mA, nominal voltage 250V, sizes 5x20) with the
following fuse features: type T time-delay, nominal current 315
mA, nominal voltage 250V, sizes 5x20.
7 Tighten the nuts of the cover and make sure the chassis is
grounded again.
HOW TOINSTALL THE GATEWAY
■Do not install the Gateway near power cables or radio-
transmitting sources.
■When manipulating internal jumpers, do not touch the
electronic components with your fingers in order to prevent
stray currents which could irreparably damage the
components themselves.
■Earth the Gateway casing to the stud identified by the
appropriate yellow label.
■The entire system could be damaged by the erroneous
connection of a single wire.
■Preferably insert the cables into the connectors with the
Gateway switched off.
■During the configuration phase, strictly follow the
instructions on the use of the relevant program.
Before installing the Gateway make sure you have installed the
address cards correctly. Follow the instructions in the installation
manuals of the address cards.
Connections of an address card to the Gateway or to
another address card
The address card (EKAC10A) or the field rail of the address card
(EKAC30A,EKAC60A,EKAC120A) must be connected to the
Gateway or to another address card.
If the chiller is… then connect the address card to...
the first in line, the gateway.
the only one to connect, the gateway.
not the only one to connect and not the first one in line… another address card or another field rail.
Use a 9-pole male connector to connect the chillers provided with
address cards to the Gateway. Plug this 9-pole male connector
into the 9-pole female connector labelled ‘Carel net.’at the back
of the Gateway.
If you have to connect two address cards or field rails, use
AWG20 or AWG22 shielded couple type cables.
Connect as listed.
Gateway EKAC10A EKAC30/60/120A
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-
Example of connection of EKAC10A to the gateway:
The serial line of the address cards has to be terminated with the
resistor (120Ω1/4W) between the TX/RX+ and TX/RX- terminals
of the address card situated at the end of the network.
240V ~
fuse
transformer
power
supply
unit 24V
~
120V
~
line
print out
alarm1
alarm 2
rx
tx
reset
Gateway
Gateway
226
130
52
166
18
7
105.4
20
20
Serial module
µ chiller
compact
1
config.
Carel Net. relay fuse
modem
rs422/485
45
12 3
GND TX+RX+ TX-RX-
to serial line

3
Connections of the Gateway to the configuration
computer
The connection of the configuration computer to the Gateway is
made to the 9-pole male connector at the back of the Gateway
labelled ‘config.’. This connection can be made by two different
cables:
■a cable with a 9-pole female connector at both ends
■a cable with one 9-pole female connector (to Gateway) and one
25-pole female connector (to the computer)
A program on a diskette delivered with the Kit can start the initial
configuration once the cable connects the Gateway to the
computer.
Remove the cable after configuration.
Connections to make for a cable with a 25-pole female
connector
Make the connections as listed:
Computer Gateway (connector labelled 'config.')
25-pole female 9-pole female
2 TX RX 2
3 RX TX 3
7 GND GND 5
Connections to make for a cable with two 9-pole female
connectors
Make the connections as listed:
Computer Gateway (connector labelled 'config.')
9-pole female 9-pole female
3 TX RX 2
2 RX TX 3
5 GND GND 5
Connections of the Gateway to the BMS
There are two possibilities to connect the BMS to the gateway:
■using an RS-232 standard
■using an RS-485 standard
RS-232 connection diagrams (Modbus-Jbus and BACnet)
The RS-232 connection to the supervisory system is standard in
Modbus-Jbus and BACnet. The BACnet Gateway has no other
options to make a connection.
Make the connection at the gateway side to the 9 pin male
connector labelled ‘modem’.
The connections you have to make depend on which cable you
use. The possible connections are listed:
Connections to make for a cable with a 25-pole female connector.
Make the connections as listed:
Supervisory system Gateway (connector labelled 'modem')
25-pole female 9-pole female
2 TX RX 2
3 RX RX 3
7 GND GND 5
Connections to make for a cable with two 9-pole female connectors.
Make the connections as listed:
Supervisory system Gateway (connector labelled 'modem')
9-pole female 9-pole female
3 TX RX 2
2 RX TX 3
5 GND GND 5
In any case, refer to the specifications of the supervisory system
for other possible connection types. However, the gateway only
manages the signals TX and RX.
RS-485 connection diagrams (only for Modbus-Jbus)
The RS-485 connection diagrams can only be used by Modbus-
Jbus.
The possible connections are listed:
Supervisory system Gateway (connector labelled RS-422/RS-485)
GND 1
TX+/RX+ 4
TX-/RX- 5
The pinning from the supervisory system side is omitted because
it changes depending on the particular supervisory system being
utilised.
HARDWARE CONFIGURATION
Opening the cover of the Gateway gives you access to the four
jumpers present on the card. The hardware configuration is made
by placing the jumpers in a specific way to enable different ports
and their options. The A, B, C, D jumpers are shown in the figure.
Read the instructions to enable a port or an option of a port.
How to enable the RS-232 serial port (‘modem’)
towards the supervisory system
This way the ‘RS-422/485’modes and respective port are
disabled.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper Modbus BACnet
A in 1-2 Yes Yes
How to enable the ‘RS-422/485’serial port towards
the supervisor
This way the RS-232 modes and the respective ‘modem’port are
disabled.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper Modbus BACnet
A in 2-3 Yes No

4
How to enable the output communication RS-485 at
the ‘RS-422/485’port
You can only enable output communication RS-485 when jumper
A is in position 2-3.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper Modbus BACnet
B in 1-2 Yes No
How to enable the output communication RS-422 at
the ‘RS-422/485’port
You can only enable output communication RS-422 when jumper
A is in position 2-3.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper Modbus BACnet
B in 2-3 No No
How to enable the communication to the chiller
network in RS-485 mode
This function uses the output of the ‘Carel. net’port.
The table shows the position of the jumper and the possibility in
BACnet and Modbus-Jbus.
Jumper Modbus BACnet
C in 1-2 Yes Yes
SOFTWARE CONFIGURATION (MS-DOS PROGRAM)
Installation of the configuration software for the
Gateway
System requirements for the PC to configure the Gateway:
■3.0 or higher DOS operating system
■RS-232 serial port
Cable requirements for the PC to configure the Gateway:
■cable termination connectors must be 25- or 9-way female at
the PC side and standard 9-way female at the Gateway side
■see section Connection of Gateway to configuration terminal
Insert the diskette supplied with the Gateway in the disk drive
(drive a:) to start the installation of the configuration software.
Parameter writing
To write the parameters:
■digitise for BACnet: a:wrbaccnf parameter list <enter>
■digitise for Modbus-Jbus: a:writemb0 parameter list <enter>
1
2
3
A
B1
2
3
C
D
1
2
3
NO NC
12C BUS OPTION

5
Parameter list means the sequence of parameter selection with
the following syntax:
parameter list = <com> <net_address> <n_of_slaves>
<Carel_baud> <Gateway_baud> <stop> <parity>
The possible parameter selections are listed:
If you only digit rdbaccnf (for BACnet) or writemb0 without
parameters or if some parameter is not defined, the program will
display the correct syntax to be used again.
Each parameter must be separated from the next by means of a
blank space.
If the programming is effective, the screen will display the
message:
***GATEWAY PROGRAMMED***
Once programmed, the Gateway must be restarted by pressing
the reset button. If the Gateway is not connected or does not
respond, the screen will display the following message:
*********ERROR SENDING GATEWAY CONFIGURATION********
If so, check:
■the cable connection
■the Gateway power supply (yellow LED ON)
■signalling LED state
Parameter reading
To read the parameter selection:
■digitise for BACnet: a:rdbaccnf <enter>
■digitise for Modbus-Jbus: a:readmb0 <enter>
The PC screen will display the configuration present in the
Gateway with the parameter relevant to the software version.
If the Gateway is not connected or does not answer, following
message will be displayed:
*********ERROR READING GATEWAY CONFIGURATION********
If so, check:
■the cable connection
■the Gateway power supply (yellow LED ON)
■signalling LED state
com
net_address
n_of_slaves
carel_baud
gateway_baud
stop
parity
NOTES
Description Possible selections
Communication serial port utilized by the
configuration computer.
Address with which the BACnet or the Modbus-
Jbus sees the address cards sub-network.
Max. number of slaves (address cards)
connected to the Gateway. The first slave has
always address 1, the successive ones are
numbered sequentially.
Baud-rate of the address card/Gateway
communication.
Baud-rate of the supervisory system/Gateway
communication.
Bit stop in the supervisory system/Gateway
communication.
Parity in the supervisory system/Gateway
communication.
/COM1 - /COM2
1-16
1-8 (for BACnet)
1-16 (for Modbus-Jbus)
19200
600 - 1200 - 2400 - 4800 - 9600
1 - 2
NONE - ODD - EVEN

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