A: 1. Check whether the motor no-load current in the motor auto-tuning parameters is below 60% of the motor rated current or not. If the deviation is large, please do auto-tuning again.
2. Check the deceleration time of the VFD, whether the inertia of the load is too large, and whether there is a sudden change load during deceleration.
3. If the adjustment parameters still cannot be solved, it can be determined that the selected power of the VFD is too small, and it is recommended to replace the one with higher power model.