Overvoltage PMx during charging

KPS Intermediate Circuit Overvoltage During Charging

Kuka · KR C2 Robot Controller

What does Overvoltage PMx during charging mean?

An overvoltage condition has been detected in the intermediate circuit of the KPS module (PMx) during its charging phase. This is typically caused by a mains voltage that is too high.

Repair Steps

  1. 1

    Measure the incoming mains voltage at the KPS input terminals. If it exceeds specifications, identify the source of the high voltage.

  2. 2

    If the mains voltage is consistently too high, consider installing a transformer to adjust the input voltage to the KPS.

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Verified technical data. Last updated: March 2026