LG PAHCMS000 - Page 39

39
Installation
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AHU COMMUNICATIONS KIT INSTALLATION
Discharge Air Temperature Controller
Case 3: Multiple AHUs / Standalone or DDC by Modbus
Modbus
communication
line
IDU communication line
Discharge air
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Module
communication line
RA temp.
controller
Master
02:03
Communication
module
Master
02:00
RA temp.
controller
Master
02:01
RA temp.
controller
Master
02:02
Outdoor
Unit
00
Main
module
001
Power line
Modbus
communication
Remote
Controller
1)
line
Discharge air
sensor
Pipe in & out
sensor
L N
Pipe in & out
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Communication
module
Master
02:00
RA temp.
controller
Master
02:01
RA temp.
controller
Master
02:02
RA temp.
controller
Master
02:03
Outdoor
Unit
00
Main
module
002
ODU communication line
Remote
Controller
1)
L N
Discharge air temp. controller
Note :
1. Remotecontrollershouldbe connectedtoPAHCMS000.
2. LG Central controller addressing for discharge air temp. controller should be set to the same address as the main module’s address.
3. Address of Comm. module of PAHCMS000 (Central control address) must be set to ‘00’. The address for additional
PAHCMR000 must be set with an order increasing by 1. Also ODU address must be the same as the paired AHU controller.
4. All PAHCMR000 units need to be set as Master mode.
LG centralized
controller
2)
or
DDC
(Modbus)
Remote controller connected to PAHCMR000 can only monitor status.