Measure the applied AC voltage phase to phase and phase to ground to verify that it is present and correct.
If you can connect to the inverter with the COMBIVIS software, look in the ru parameters to see what the inverter is actually measuring the DC bus voltage at.
Answers & Comments
Measure the applied AC voltage phase to phase and phase to ground to verify that it is present and correct.
If you can connect to the inverter with the COMBIVIS software, look in the ru parameters to see what the inverter is actually measuring the DC bus voltage at.
Ac mains voltage x 1.414 = @ DC bus voltage.