To MD series electric actuator of the overall proportional adjustment type as an example.
MD series electric actuator AC servo motor driven by the bit-bit servo system, by the position of the positioner PM-2 control panel to accept the regulation system 4 ~ 20mA DC control signal and the location of the transmitter position feedback borrowed number , The comparative signal deviation is amplified to turn on the power stage, the motor rotation drive the output of the actuator to reduce the deviation in the direction of movement (position transmitter output device will continue to change the actual position of the electrical signal - bits The gain feedback signal sent to the positioner), until the deviation signal is less than the set value so far. The output of the actuator is stabilized at the position corresponding to the input signal.
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