Proportional Control, Spring Return
The TFB24-SR proportional control, spring return actuator is intended for proportional modulation, fail-safe control of dampers in HVAC systems. The actuator operates in response to a 2 to 10 VDC, or with the addition of a 500 ohm resistor, a 4 to 20 mA control input from an electronic controller or positioner. A 2 to 10 VDC feedback signal is provided for position indication or master-slave applications.
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