A: 1. Check whether the parameters of the VFD are set correctly or whether the auto-tuning parameters of the motor are correct.
2. Check whether there is leakage in the output circuit of the VFD. If there is leakage, please eliminate it. Make sure that the output cable of the VFD is less than 50m. If the output cable is too long, it is recommended that the customer install an output reactor or output filter.
3. Whether the load changes suddenly during constant speed operation, and adjust the parameters to make the current limiting protection effective