Intermediate circuit charging circuit defective PMx

KPS Intermediate Circuit Charging Circuit Defective

Kuka · KR C2 Robot Controller

What does Intermediate circuit charging circuit defective PMx mean?

The optocoupler responsible for ballast resistor current detection signals that no current is flowing through the ballast resistor, even during charging. This indicates a defect in the intermediate circuit charging circuit of the KPS module (PMx).

Repair Steps

  1. 1

    Restart the KPS module.

  2. 2

    If the error persists, exchange the KPS module.

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Verified technical data. Last updated: March 2026
Kuka Error Intermediate circuit charging circuit defective PMx: KPS Intermediate Circuit Charging Circuit Defective — Troubleshooting Guide | ErrorLib