LG PAHCMS000 Installation Manual page 38

AHU COMMUNICATIONS KIT INSTALLATION
Discharge Air Temperature Controller
Case 2: One AHU with Multiple ODUs / Standalone or DDC by Modbus
LG centralized
controller
2)
or
DDC (Modbus)
Outdoor
Unit
00
IDU com m. line
Outdoor
Unit
01
Outdoor
Unit
02
ODU com .line
Outdoor
Unit
03
Note:
1. Remote controllershouldbeconnected toPAHCMS000.
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.
38
Modbus
communication
line
IDU comm. line
Communication
Main
module
Module
Master
001
02:00
RA temp.
controller
Master
02:01
RA temp.
controller
Master
02:02
RA temp.
controller
Master
02:03
Power line
L N
Remote controller connected to PAHCMR000 can only monitor status.
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Discharge air
sensor
Module communication line
Pipe in & out
sensor
3)
Pipe in & out
sensor
Pipe in & out
sensor
Pipe in & out
sensor
Discharge air temp. controller
Remote
Controller
1)