Common problems and causes of reducer motors:

1. The motor does not rotate when energized
2. The speed of the variable frequency motor after starting is lower than the rated speed
3. The motor has abnormal noise or excessive vibration
4. The temperature rise of the motor is too high
5. The bearing is overheated
6. The motor shell is electrified
7. The motor can't start under load

ReducerPossible reasons for the failure:
1. Power supply lack of phase
2. One phase of the stator winding is open
3. Short circuit between turns and phases of stator windings
4. Stator wiring error
5. Improper setting of inverter parameters
6. The brake is not working