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Wiring inputs and outputs
Inputs
The TV-UC561 has inputs that accept the following signal types.
Signal Type
Thermistor
1
Dry contact
0–5 Vdc
0–10 Vdc
Pulse counter
2
1
To use a thermistor not listed above, you can set up a custom translation table (page 35) for your sensor in the
controller's driver.
2
The TV-UC561 can perform pulse counting for dry contact or voltage inputs if you assign the input to a Pulse to
Analog Input microblock. See To adjust input and output properties (page 25).
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. One bank contains 3 built-in relays, and the other bank contains 2 built-in relays. The
relays have 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-UC561'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.
TruVu™ UC561
Installation and Start-up Guide
Description
Precon Type 2 (10kOhm at 77 °F)
Input voltages should be from 0.2 Vdc to 4.0 Vdc for thermistors
The maximum current when the contact is closed is 0.5 mA. The input voltage should be 4.1
V when the contact is open. Maximum closed contact resistance is 1kOhms.
The input impedance of the TV-UC561 is approximately 120 kOhm when configured as a
voltage input.
Pulse counting up to 10 pulses per second.
Minimum pulse width (on or off time) required for each pulse is 50 msec.
19
Wiring inputs and outputs
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