LG PAHCMS000 Installation Manual page 42

AHU COMMUNICATIONS KIT INSTALLATION
Discharge Air Temperature Controller
Case 1: Multiple AHUs / DDC by Contact Signal
DDC Contact Signal
Modbus
communication line
LG
centralized
controller
2)
Outdoor
Unit
00
Modbus
communication
line
Outdoor
Unit
00
ODU communication line
Note:
1. Remote controllershouldbeconnected toPAHCMS000. Remote controller connected to PAHCMR000 can only monitor status.
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.
42
Discharge air
sensor
Module
communication line
Communication
Main
module
module
<Master>
001
02:00
Remote
Controller
1)
Discharge air
L N
sensor
Communication
Main
module
module
<Master>
002
02:00
Remote
Controller
1)
L N
Due to our policy of continuous product innovation, some specifications may change without notification.
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IDU communication line
Pipe in & out
Pipe in & out
sensor
sensor
RA temp. RA temp.
controller controller
<Master> <Master>
02:01
Pipe in & out
Pipe in & out
sensor
sensor
RA temp. RA temp.
controller controller
<Master> <Master>
02:01
Pipe in & out
Pipe in & out
sensor
sensor
RA temp.
controller
<Master>
02:03
02:02
Power line
Pipe in & out
Pipe in & out
sensor
sensor
RA temp.
controller
<Master>
02:03
02:02
Discharge air temp. controller