How to solve Err40 in the inverter?

If you encounter an error of Err40 in the VB series inverter, you can treat it as an overcurrent situation.
If the motor is a high-speed motor, set the parameters of group F2 according to the motor nameplate, and let the inverter adapt to the motor.Then set FA.05 to 0. Test again.For some situations, for example, the motor is used to cut wood, you can consider reducing the speed of entering the knife.
If the problem is still not solved, contact our technical engineer.