Code Name Causes Possible Solutions End1 Excessive Rated Voltage Setting The torque reference was more than 20% during Auto-Tuning or the no-load current that was measured after Auto-Tuning is more than 80%. Make sure that the input motor nameplate data is correct. Do Auto-Tuning again and correctly set the motor nameplate data. If you can uncouple the motor and load, remove the motor from the machine and do Rotational Auto-Tuning again. If you cannot uncouple the motor and load, use the results from Auto-Tuning.