Variable-Speed Wshp Tracer™ Uc400 Controller; I/O Definitions - Trane Axiom VSHE024 Operating And Maintenance

Variable-Speed WSHP Tracer™ UC400 Controller

I/O Definitions

Hard-wired input/outputs for the variable-speed WSHP
UC400 controller are defined in
Table 43. UC400 hard wired input/output definitions
UC400
Connection type terminal
AI1
AI2
AI3
Analog Inputs
AI4
AI5
UI1
Universal Inputs
UI2
BI1
BI2
Binary Inputs
BI3
BO1
Binary Outputs
BO2
(b)
(Relay)
BO3
BO4
BO5
BO6
Binary Outputs
(c)
(Triac)
BO7
BO8
BO9
AO1/ BI4
Analog Outputs/
Binary Inputs
AO2/ BI5
IMC +
IMC -
Communication
LINK +
LINK -
PI1
Pressure Inputs
PI2
(a) For more information on the UC400 connection specifications, refer to the UC400 installation sheet; Literature Order Number X39641064-01.
(b) For Triac output control, 24VAC will be supplied to the Triac Supply input to be used for the Triac outputs.
(c) 24 Vac will be connected to the binary outputs and the UC400 will provide a contact closure for output control.
WSHP-SVX13C-EN
Table 43, p. 47.
Variable-speed WSHP
configuration
Zone Temp Sensor/Timed Override and
Timed Override Cancel
Zone Setpoint
Fan Mode (Control Auto/Off)
AHRI Audit Test Mode Initiate
Heat Sink Temperature Sensor
Entering Water Temperature Sensor
Relative Humidity Sensor
Leaving Water Temperature
Local Occupancy
Condensate Overflow
Compressor Protection Status – Discharge
Line Thermostat/Low/High Pressure Cut Out/
Overload Relay Status
Supply Fan On/Off Control
Isolation Valve
Compressor 1
NA
NA
NA
Reversing Valve
NA
NA
Supply Fan Motor Control Signal
Variable Speed Compressor Control Signal
NA
NA
BACnet Comm. +
BACnet Comm. -
Test Mode Input
Feedback from Compressor VFD
Connection
(a)
specifications
10 kΩ Thermistor -40-212°F
0-1000 Ω 40-115°F
Auto/Off
200-100 kΩ
Test Mode Active/Inactive
10 kΩ Thermistor -40-212°F
10 kΩ Thermistor -40-212°F
4–20 mA 0-100%RH
10 kΩ Thermistor -40-212°F
Normally Open
Occ./Unocc
Normally Closed
24 Vac detect
Okay/Failed
Normally Closed
Okay/Failed
Energized/De-Energized
2.88 A @24 Vac pilot duty Energized/De-Energized
Energized/De-Energized
Energized/De-Energized
Energized/De-Energized
Energized/De-Energized
0.5 A max @24–277 Vac,
resistive and pilot duty
Energized/De-Energized
Energized/De-Energized
Energized/De-Energized
PWM Output: 80Hz 0-100% Duty Cycle
0-10Vdc 0-100% Compressor Output
Comm. NA
Comm. NA
Comm. NA
Comm. NA
0Vdc/5Vdc
3-Wire:+5Vdc, Signal,
Gnd (Normal/Test Mode Active)
0Vdc/5Vdc
3-Wire:+5Vdc, Signal,
Gnd (Okay/Drive Disabled or Failed)
Valid range
47