Carrier UC Open XP, Installation And Startup Manual, Page: 17 / 44

UC Open XP/UC Open XP IO 13
Wiring inputs and outputs
See Appendix A (page 29) to print a blank wire list.
Input wiring specifications
Input Maximum length Minimum gauge Shielding
0–5 Vdc
0–10 Vdc
500 feet
(152 meters)
22 AWG 100 feet Unshielded
100 - 500 feet Shielded
0–20 mA 1000 feet
(305 meters)
22 AWG 100 feet Unshielded
100 - 1000 feet Shielded
Thermistor
Dry contact
Pulse counter
TLO
500 feet
(152 meters)
22 AWG 100 feet Unshielded
100 - 500 feet Shielded
RTD 100 feet
(30 meters)
22 AWG Shielded
SPT sensors 500 feet
(152 meters)
18 AWG Unshielded
Inputs - UC Open XP
The UC Open XP has 12 inputs that accept the signal types described below.
These
inputs...
Support this
signal type... Description
All Thermistor
RTD
0–10 Vdc
4-20 mA Precon type 2 (10 kOhm at 77°F). Input voltages should be from
0.489 Vdc to 3.825 Vdc for thermistors.
All Dry contact A 5 Vdc wetting voltage detects contact position, resulting in a 0.5
mA maximum sense current when the contacts are closed.
UI-1, UI-2 0–20 mA
Pulse input The input impedance of the UC Open XP is approximately 1 MOhm.