LG AR-DR12-05A Installation And Operation Manual page 109

Expansion Valve Driver (EVD) Terminal
Connections
Systems use CAREL EVD evolution expansion valve drivers to control electronic expansion
valves, if equipped.
• See the figure and table for terminal connection points.
• See the wiring schematics shipped with the unit for the factory-configured connection
points.
Table 12: Expansion Valve Driver Terminal Connections.
Analog Inputs
Label Unit Connection
Suction refrigerant pressure
S1
transducer
Suction refrigerant
S2
temperature
S3 Unassigned
Discharge refrigerant
S4
temperature
Digital Inputs
DI-1 Unassigned
DI-2 Unassigned
Electronic Expansion Valve
1 CAREL ExV (green)
3 CAREL ExV (brown)
2 CAREL ExV (yellow)
4 CAREL ExV (white)
Sensor Type
0.5–4.5 V c
CAREL NTC 10K Type 4
CAREL NTC 10K Type 4 HT
Due to our policy of continuous product innovation, some specifications may change without notification.
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CONTROLLER
Figure 56: Expansion Valve Driver Terminal
Connections.
Power Supply
EVD evolution
Range
0–250.0 psig
Analog – Digital Inputs
Overview
4 2 3 1
E V connection A Relay A
x
Network
GND Tx/Rx
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