Prolon VC2000 Series - Unit Controller I;O Diagrams

PL-M2000-MUA (Air Make-Up)
AO 3 - Variable Frequency Drive
AO 2 - Cooling
AO 1 - Modulating Heat
DO 5 - Alarm
DO 4 - Preheat Permission
DO 3 - Fan
DO 2 - Outside Air Damper
DO 1 - Occupancy (Exhaust)
T1100
Zone Demand
Occupancy Override
NC2000
Occupancy (optional)
Outside temperature (optional)
INT Port : Incoming RS485
Network Communication
(modbus)
24
VAC
Bottom Row:
Common for all outputs
Bottom Row:
Common for all inputs
Controller’s power source
24 VAC - Class 2
NET Port: Incoming RS485 Network
communication (Modbus)
CO2 (4-20mA) / Building Pressure (0-5VDC)
Zone Temperature (10K Thermistor)
Outside Temperature (10K Thermistor)
Supply Temperature (10K Thermistor)
Manual Reset
Proof of Fan
Proof Outside Air Damper Open
Proof Exhaust 2 / Manual override
Proof Exhaust 1
4-5