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
Restart the KPS module.
- 2
If the error persists, exchange the KPS module.
Verified technical data. Last updated: March 2026
Source: Kuka KR C2 Robot Controller