LG PAHCMR000 Installation Manual page 24

DISCHARGE AIR TEMPERATURE CONTROL (PAHCMS000)
24
Main Module _ Electric specification of port
n RS485 Communication port
Name Port
ODU Comm. RS485 CH2
LG
Central RS485 CH3
Comm.
DDC Central
RS485 CH4
Comm.
n Universal Input
Digital Input
Name Port
Fan_Low UI4
Fan_Mid UI5
Fan_High UI6
Analog Input
Name Port
Capacity Control
UI7 (AI)
0 ~ 10 V
NOTE
Please refer to the 'UI7(Analog Input) – ODU Capacity Control' of this manual.
Digital Input - Internal Power Source (Non-voltage)
Name Port
ON/OFF DI1 - GND
Cool/Heat DI2 - GND
Emer. Stop DI3 - GND
+12 V-
DI Control
DCOM
Item
ODU Comm.
(CEN A/B or
INT A/B)
LG Central Comm.
DDC(Modbus)
Central Comm.
Value
Short Open
Low STOP
Mid STOP
High STOP
Value Electrical Spec.
DC 0 ~ 10 V,
0 ~ 10 V Input
20 mA
Value
Short Open
ON OFF
Heating Cooling
Emergency
Normal
Stop
Internal Power External Power
Source Source
Electrical Spec.
Max 1km, Communication with MULTI
2
2C x (1.0~1.5) mm V/Single split ODU for ODU
(shield wire) Capacity control
Max 500 m, Communication with LG
2
2C x (1.0~1.5) mm central controller through
(shield wire) LGAP AHU Protocol
Max 500 m, Communication with DDC
2
2C x (1.0~1.5) mm central controller through
(shield wire) Modbus protocol
*UI is available when DIP SW1-1 is OFF.
Electrical Spec.
Non voltage
Non voltage
Non voltage
Function
ODU Capacity control input (0 ~ 10V)
* When Temp. Control Type is 'Manual by DDC'
(SW 1-2 : OFF), below UI7 Table setting is
available.
*DI is available when DIP SW1-1 is OFF
Electrical
Spec.
Non voltage Operation ON/OFF
Non voltage Operation Mode
Emergency Stop Input (Priority
Non voltage
operation)
Use internal power source for DI
Non voltage
+12 V-DCOM should be "Short".
Function
Function
Fan Speed Setting Input
Function