Motor Operated Valve Actuator

Motor Operated Valve Actuator

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Motor Operated Valve Actuator Structure principle

Take the integral proportional adjustment type of MD series electric actuator as an example.

MD series electric actuator is a bit servo mechanism driven by AC servo motor, and the PM-2 control board of position positioner is connected to receive the 4-20mA DC control signal from the regulating system and compare with the position feedback signal from the position transmitter. The motor rotates and drives the output of the actuator to move in the direction of reducing the deviation (the position transmitter continuously converts the actual position of the output into an electrical signal and sends the bit-gain feedback signal to the positioner) until the deviation signal is less than the set value. At this point, the output of the actuator is stabilized in the position corresponding to the input signal.

Specification