LG AR-DR12-05A Installation And Operation Manual page 106

CONTROLLER
Overview
Table 9: Main Board Analog and Digital Outputs.
Analog Outputs
Drawing Reference Terminal
7 J4
7 J4
7 J4
7 J4
3 J6
3 J6
Digital Outputs
Drawing Reference Terminal
15 J12
15 J12
15 J12
15 J13
15 J13
15 J13
15 J14
15 J15
15 J15
15 J16
15 J16
15 J16
15 J17
15 J17
15 J18
15 J18
Chilled water option, no compressors (0 to 10 VDC, direct or reverse).
a
Water source heat pump units only.
b
352 Casing with Active Head Pressure control 2.0.
c
Water source heat pump units with more than one compressor.
d
Units with inverter scroll compressor.
d
Heat pump units.
f
106
Label Unit Connection
Y1 Modulating compressor output or cooling
capacity output
Y2 Condenser fan VFD output Circ. A; or water
valve output Circ. A
Y3 Hot gas reheat valve output
Y4 Condenser fan VFD output Circ. B
valve output Circ. B
U7 OA/RA damper output
U8 Supply fan speed output
Label Unit Connection
NO1 Compressor 1 start
NO2 Compressor 2 start
NO3 Compressor 3 start
NO4 Compressor 4 start
NO5 Supply fan start
NO6 Exhaust fan start
NO7 Actuator power
NO8 Global alarm output, BMS output
NO8 Unassigned
NO9 Condenser fan VFD start
NO10 Condenser fan stage 2 start
NO11 Condenser fan stage 3 start
NO12 Unassigned
NC12 Inverter scroll compressor E-stop
NO13 Reversing valve output
NC13 Unassigned
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Sensor Type
Use-dependent
a
0–10 Vdc
b
0–10 Vdc
or water 0–10 Vdc
c
d
0–10 Vdc
0–10 Vdc
Position Indicates
Closed = start compressor
Closed = start compressor
Closed = start compressor
Closed = start compressor
Closed = start fan
Closed = start fan
Closed = enabled
Closed = enabled
Closed = start condenser fan
Closed = start condenser fan
Closed = start condenser fan
Open = stop compressor
e
Closed = heating
f
Range
0–100%
0–100%
0–100%
0–100%
0–100%
0–100%