Binary Outputs; Analog Outputs - Carrier UC Open XP Installation And Startup Manual

Installing the UC Open XP
Signal Type
0–20 mA
RTD
Pulse counter*
* The UC Open XP can perform pulse counting for dry contact or voltage inputs if you assign the input to a Pulse
to Analog Input microblock.

Binary outputs

The UC Open XP has 6 binary outputs. Each output is a dry contact that must be powered from a Class 2 power
source.
To size output wiring, consider the following:
•
Total loop distance from the power supply to the controller, and then to the controlled device
NOTE Include the total distance of actual wire. For 2-conductor wires, this is twice the cable length.
•
Acceptable voltage drop in the wire from the controller to the controlled device
•
Resistance (Ohms) of the chosen wire gauge
•
Maximum current (Amps) the controlled device requires to operate

Analog outputs

The UC Open XP has 6 analog outputs:
• 1 and 2 are configurable for 0-10 V or 0-20 mA
•
3, 4, 5, and 6 are 0-10 V only
The controlled device must share the same ground as the UC Open XP and have the following input impedance:
0–10 Vdc min 500 Ohms
0–20 mA max 800 Ohms
UC Open XP and
UC Open XP IO
Installation and Start-up Guide
Description
The input resistance on the positive (+) terminal is 250 Ohms. The Aux
Power Out connector is capable of supplying 24 Vdc to multiple 4–20 mA
transducers, but the total current demanded must not exceed 200 mA. If the
voltage measured from the Aux Power Out connector to Gnd is less than 18
Vdc, you need to use an external power supply.
Platinum - 1 kOhm at 32°F (0°C)
Nickel/Iron - 1 kOhm at 70°F (21°C)
Balco TS8000 - 1 kOhm at 70°F (21°C)
Input voltages should be from 0.6–1.2 V
UI-2 and UI-2 only:
Maximum of 10 pulses per second. Minimum pulse width required for each
pulse:
•
ON to OFF time (half cycle) is 50 msec
•
ON to OFF to ON time (full cycle) is msec
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