Cause : Output Phase Loss comes when phase loss on the output side of the drive or when you run drive without motor or the rating of motor is small as compare to drive. Setting L8-07 to 1 or 2 enables Phase Loss Detection.

1. The output cable is disconnected - Check for wiring errors and properly connect the output cable. Correct the wiring.
2. The motor winding is damaged- Check the resistance between motor lines. Replace the motor if the winding is damaged.
3. The output terminal is loose- Apply the tightening torque specified in this manual to fasten the terminals.
4. The rated current of the motor being used is less than 5% of the drive rated current- Check the drive selection and motor capacities.
5. An output transistor is damaged