Common faults of actuators

Common faults of actuators

(1) After receiving the switch signal from the control system, the motor does not rotate and there is a buzzing sound.

The reason may be:

1) The planetary gear part of the reducer is stuck, damaged or deformed; 

2) The helical gear transmission part of the reducer is deformed, excessively worn or damaged; 

3) The transmission part of the turbine vortex rod or screw nut of the reducer is deformed, damaged, or stuck;

4) The overall mechanical part is not well coordinated and not flexible, requiring adjustment and refueling.

(2) Principles of Electrical Fault Structure

1) After receiving the on/off signals from the control system, the electric actuator does not rotate and there is no buzzing sound.

Possible reasons are: there is no AC power supply or the power supply cannot be added to the motor part or position locator part of the actuator;

The PM amplification board is not working properly and cannot send corresponding control signals;

The solid-state relay is partially damaged and cannot convert the weak signal sent by the amplification board into the strong electrical signal required by the motor;

The motor thermal protection switch is damaged; The torque limit switch is damaged; The travel limit switch is damaged;

The manual/automatic switch position is selected incorrectly or the switch is damaged; The motor is damaged.

2) The electric actuator receives the on/off signals from the control system, but the motor does not rotate and there is a buzzing sound.

The possible reason is that the starting capacitor of the motor is damaged; Slight short circuit between turns of motor coil; The power supply voltage is insufficient.

3) After the electric actuator receives the on/off signals from the control system, the motor shakes and is accompanied by a gurgling sound.

The reason may be that the output signal of the PM amplifier board is insufficient to fully conduct the solid-state relay, resulting in insufficient loading voltage of the motor;

The performance of solid-state relays deteriorates, causing their output terminals to not be fully conductive.