LG PAHCMS000 - Page 38

38
PRDCAM AHU Communication Kit Installation Manual
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AHU COMMUNICATIONS KIT INSTALLATION
Discharge Air Temperature Controller
Case 2: One AHU with Multiple ODUs / Standalone or DDC by Modbus
Modbus
communication
line
IDU comm. line
Discharge air
sensor
Pipe in & out
sensor
Module communication line
Communication
module
Master
02:00
3)
Outdoor
Unit
00
Main
Module
001
Remote
Controller
1)
IDU com
Pipe in & out
sensor
RA temp.
controller
Master
02:01
Pipe in & out
sensor
RA temp.
controller
Master
02:02
ODU com
Pipe in & out
sensor
RA temp.
controller
Master
02:03
Power line
Discharge air temp. controller
L N
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.
.
line
Outdoor
Unit
03
Outdoor
Unit
02
m
. line
Outdoor
Unit
01
LG centralized
controller
2)
or
DDC (Modbus)
Remote controller connected to PAHCMR000 can only monitor status.