25VCCX2 Controller Technical Guide
INPUTS AND OUTPUTS
VCCX2 Controller and EM1 Module Inputs/Outputs Maps
EM1 Expansion Module
Inputs
ANALOG INPUTS (AI)
INPUT NAME
T1 Entering Water Temperature Sensor
T2 Mixed Air Temperature sensor
SIG1 Return Air Plenum Pressure (0-5V)
SIG2 Economizer Damper Midway Switch (5VDC)
SIG3 Economizer Actuator Feedback (0-5 or 0-10 V)
DUCT
STATIC
JACK
Exhaust Duct Static Pressure (Duct Static Jack)
Table 6: VCC-X EM1 Expansion Module Analog Inputs
BINARY INPUTS (BI)
INPUT NAME
BI1 Return/Exhaust Proof of Flow
BI2 Direct Fire Status Signal (24VAC)
BI3 Direct Fire Alarm Signal (24VAC)
Table 7: VCC-X EM1 Expansion Module Binary Inputs
Outputs
ANALOG OUTPUTS (0-10 OR 2-10 VDC)
OUTPUT NAME
AO1 Chilled Water Valve
AO2 Return Air Damper
AO3 Return Air Bypass Damper
AO4 Motorized Exhaust Damper
Table 8: VCC-X EM1 Expansion Module Analog
Outputs
RELAY OUTPUTS (24 VAC)
OUTPUT NAME
RLY1 Congurable Relay
RLY2 Congurable Relay
RLY3 Congurable Relay
RLY4 Congurable Relay
RLY5 Congurable Relay
Table 9: VCC-X EM1 Expansion Module Relay Outputs
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