In the process of dragging the load of the motor, the motor speed is reduced for some reason, which is often called motor stall. For asynchronous motors, motor stalling is a common phenomenon.
1. Cause analysis:
1.Voltage drop: The voltage value at the input end of the motor power supply decreases, which will cause the speed of the motor to decrease;
2.Excessive load: When the load is too large, the dragging current will increase, which will cause the motor speed to decrease;
3.Mechanical damage: the failure of the bearings and stator coils inside the motor will also cause the motor speed to decrease;
4.Improper parameter setting: Unreasonable parameter setting of the inverter will also lead to a decrease in the motor speed.
Second, the maintenance method:
1.Check whether the voltage at the input end of the motor power supply is normal;
2.Reduce the load and ensure that the current being dragged is within a reasonable range;
3.replacement of faulty parts;
4.Adjust the inverter parameters according to the actual situation to make it the best state.
In short, for different motor stall situations, targeted measures should be taken to deal with them. At the same time, it is necessary to pay attention to regular maintenance and maintenance, and find and solve possible problems in time to ensure the good operation of motor equipment.