Cause : Converter operation disabled comes when the regenerative operation is not possible due to data processing in the converter such as during operation triggered by the SOF signal.

1. Check that the SOF signal is not ON.
2. Check that the multifunction regeneration converter was reset after Parameter copy.
3. Check if the converter is attempted to be run with power supplied not to the main circuit but to the control circuit.
4. Check that the power supply condition is stable.