What is the Required voltage for the MOV, and what happens to MOV during power failure while it’s operating?
MOV is operated at 440 V Ac feedback supply 110, 24v dc or Ac power
During power failure condition it turns to stop position and can be manually operated with a hand wheel.
When the primary power source to an electrical motor operated actuator is interrupted, the actuator motor stops where it is, unless there is battery back-up or a secondary power source.
The fail-safe setting for electric MOV’s that drives the motor to a fail-safe position is used when the position setpoint input signal is lost or fails. If the motor still has power when the input signal failes, then the actuator’s fail-safe system drives the motor to whatever fail-safe position is configured, which could fail-in-place or fail at a specified position.