KPS Intermediate Circuit Undervoltage During Charging

What does Undervoltage PMx during charging mean?

The intermediate circuit of the KPS module (PMx) did not reach the 500 V threshold during charging, indicating an undervoltage condition. This is typically caused by a mains voltage that is too low.

1. 1

   Measure the incoming mains voltage at the KPS input terminals. If it is too low, identify the cause and rectify the mains supply issue.