Cause : End1 comes when excessive V/f Setting (detected only during Rotational Auto-Tuning and displayed after Auto-Tuning is complete).

1. The torque reference exceeded 20% during Auto-Tuning. 
2. The results from Auto-Tuning the no-load current exceeded 80%.
3. Prior to Auto-Tuning, verify the information on the motor nameplate.
4. Enter proper values from motor nameplate to parameters T1-03 to T1-05 and repeat Auto-Tuning.
5. If possible, disconnect the motor from the load and perform Auto-Tuning.
6. If the load cannot be uncoupled, use the current Auto-Tuning results.