Wiring inputs and outputs
TruVu™ UC683T
CARRIER CORPORATION ©2021
Installation and Start-up Guide
All rights reserved
22
Outputs
Analog outputs
Analog outputs can be used for 0-10 Vdc devices. Resistance to the ground must be 500 Ohms minimum.
NOTE
The device must share the same ground as the controller.
Binary outputs
There are 2 banks of relays. Each bank contains 3 built-in relays with dry contacts that share a common bus input.
An external voltage source must be wired to the common Bus connection for each bank of relays.
Each relay can be used to switch the voltage provided on its associated bus terminal to an external device or
relay. Each relay can switch up to 3.75 A, 30 Vac/Vdc. The total power and current that can be switched by a bank
of 3 relays cannot exceed the Class 2 limits of 100 VA or 4.2 A.
Universal output
The TV-UC683T's universal output can be set as analog or binary using the Analog/Binary DIP switch located to the
left of the output terminals.
When the DIP switch is in the Analog position, the universal output can be used for pulse-width modulated (PWM)
control of devices, such as electrically commutated motors. When used in pulse-width mode, the output voltage is
12 Vdc and the frequency is locked at 80 Hz. Use a BAO microblock to enable this.
NOTE
The PWM output signal is intended to directly control the speed of an ECM-type fan, eliminating the need
for an external converter board.
WARNING
Do not apply voltage to the universal output if the DIP switch is set to Analog.
Summary of Contents for TruVu UC683T
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