[Cause]
SVOFF (servo power off signal) input was input.
[Countermeasure]
1. Release the SVOFF signal and press the RESET button.
2. If the alarm cannot be cleared, it may be caused by a failure of related components. Repair the control device in accordance with the instructions corresponding to the control device used
Take corresponding countermeasures under "Troubleshooting based on alarm codes" in the manual.