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Unit installation
SPLIT RACK AIR CONDITIONER USER MANUAL
UM.ICUBE2.0-SRAC.SG.0822 August 2022 www.eaton.com
MT: Communication interface for maintenance uses supports MODBUS-RTU communication protocol. Connect
with the manual operator to facilitate the maintenance staff to view and modify the data, enter the factory
password to view and modify each factory parameters.
PORT1, PORT2: RS485 host computer communication interface, supports MODBUS-RTU communication
protocol. The communication connection of the host computer is shown in the following figure: 11.27. Through this
port, users can view the status of the unit, temperature and humidity data, fault information and other contents,
to achieve temperature setting, unit start and stop, and other operations.
PORT1
PORT2
PORT1
PORT2
PORT1
PORT2
PORT1
PORT2
Unit 1
Unit 2
Unit 3
Unit N
Host computer
1
8
RS485+
RS485-
Figure 2.27
Wiring diagram for host computer communication
PLAN: Group control communication interface supports MODBUS-RTU communication protocol. The group control
communication connection is shown in the following figure: 2.28. The user can realize the group control function
of the unit through this port.
Unit 1
Unit 2
Unit 3
Unit N
PLAN
PLAN
PLAN
PLAN
1
8
RS485+
RS485-
Figure 2.28
Wiring diagram for group control communication
In addition to the above, when installing the power part of the air conditioner, add the following points and please
pay attention to the installation.
