Carrier TruVu VVTBP-E2, Installation And Startup Manual

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Wiring inputs and outputs
TruVu™ VVTBP -E2 ©2022 Carrier.
Installation and Start-up Guide All rights reserved.
25
Wiring specifications
Input wiring
Input Maximum length Minimum gauge Shielding
Thermistor
Dry contact 1000 feet
(305 meters) 22 AWG Shielded
0 – 5 Vdc
0 – 10 Vdc
1000 feet
(305 meters) 26 AWG Shielded
Pulse counter
TLO 1000 feet
(305 meters) 22 AWG Shielded
Output wiring
To size output wiring, consider the following:
•
Total loop distance from the controller 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
To wire inputs and outputs
WARNING Do not apply line voltage (mains voltage) to the controller's ports and terminals.
The Gnd terminal is shared by the inputs/outputs to the top and bottom of it.