Cause : No power unit present comes when the power unit parameters cannot be read or no parameters are stored in the power unit. It is possible that the DRIVE-CLiQ cable between the Control Unit and power unit is interrupted or defective.
- carry out a POWER ON (power off/on) for all components.
- check the DRIVE-CLiQ cable between the Control Unit and power unit.
- Check the power unit and replace if necessary.
- check the Control Unit, and if required replace it.
- after correcting the topology, the parameters must be again downloaded using the commissioning software
please help me to repair the siemens g120 drive that indicate f7800
@amirmalekii77077 check power card may be some issue in power supply section. Also check connecting cable of power card.
