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Wiring for power
TruVu™ MPC Processor
CARRIER CORPORATION ©2021
Installation and Start-up Guide
All rights reserved
15
WARNING
Do not apply line voltage (mains voltage) to the controller's ports and terminals.
CAUTIONS
•
The TV-MPCXP is powered by a Class 2 power source. Take appropriate isolation measures when mounting it
in a control panel where non-Class 2 circuits are present.
•
Carrier controllers can share a power supply as long as you:
•
Maintain the same polarity.
•
Use the power supply only for Carrier controllers.
To wire for power
1
Make sure the TV-
MPCXP’s power switch is in the
OFF
position to prevent it from powering up before you can
verify the correct voltage.
2
Remove power from the power supply.
3
Pull the red screw terminal connector from the controller's power terminals labeled
24 Vac/Vdc
(
+/-
).
4
Connect the power supply's wires to the red screw terminal connector.
5
Connect an 18 AWG or larger wire from the power supply's negative (-) terminal to earth ground. This wire
must not exceed 12 in. (30.5 cm).
6
Apply power to the power supply.
7
Measure the voltage at the red screw terminal connector to verify that the voltage is within the operating
range of 20 to 30 Vac or 23.4 to 30 Vdc.
8
Insert the red screw terminal connector into the controller's power terminals.
9
To verify the polarity of the wiring, measure the voltage from the negative terminal of the red screw terminal
connector to a nearby ground. The reading should be 0V.
10
Turn on the expander's power switch.
11
Verify that the
LED on top of the controller is on.
12
Measure the voltage at the red screw terminal connector to verify that the voltage is within the operating
range of 20 to 30 Vac or 23.4 to 30 Vdc.
Wiring for power
Содержание TruVu MPC
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Страница 67: ...CARRIER CORPORATION 2021 Catalog No 11 808 691 01 9 20 2021...