LG PAHCMS000 Installation Manual page 16

AHU COMMUNICATIONS KIT INSTALLATION
Wiring Diagram
Table 8: RS485 Communication Port
N a m e
ODU Comm. RS485 CH2
LG
RS485 CH3
Central Comm.
DDC Central
RS485 CH4
Comm.
Table 9: Digital Input
Name Port
On/Off DI1
Cool/Heat DI2
Emer. Stop DI3
*DI is available when Dip SW1-1 is Off
Table 10: Digital Output – Relay C Contact
N a m e P o t r
Alarm DO1
16
P o t r e t I m
ODU Comm.
(CEN A/B or
INT A/B)
LG Central Comm.
DDC(Modbus)
Central Comm.
Value
Short Open
On Off
Heating Cooling
Emergency Stop Normal
V a u l e l E
-Normal Status
A B COM
-Error Status
A B COM
Due to our policy of continuous product innovation, some specifications may change without notification.
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E e l t c c i r l a S e p . c
Max 3280 ft,
2C x 18~16 AWG
(shield wire)
Max 1640 ft,
2C x 18~16 AWG
(shield wire)
Max 1640 ft,
2C x 18~16 AWG
(shield wire)
Electrical Spec
Non voltage
Non voltage
Non voltage
c e r t c i l a S p e . c
Output normal or error status (Relay C Contact)
- A Contact
Normal status : open
30 VDC / 5 A Error status : short
250 VAC / 5 A
- B Contact
Normal status : short
Error status : open
F n u i t c n o
Communication with MULTI V/Single
split ODU for ODU Capacity control
Communication with LG centralized
controller through LGAP Protocol
Communication with DDC central-
ized controller through Modbus pro-
tocol
Function
Operation On/Off
Operation Mode
Emergency Stop Input (Priority operation)
F u n t c o i n