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Drives error PMx no.: 71

KPS Microcontroller Crash

Kuka · KR C2 Robot Controller

What does Drives error PMx no.: 71 mean?

The microcontroller within the KPS module (PMx) has crashed. This indicates an internal hardware or firmware malfunction of the KPS.

Common Causes

  • Microcontroller on the KPS drive has crashed or is unresponsive.
  • Unexpected software exception or hardware fault.
  • Watchdog timer expired due to system unresponsiveness.
  • Critical internal error in the drive's processing unit.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Restart the KPS module.

  2. 2

    If the error persists, exchange the KPS module.

Browse all codes in this manual (58)
Verified technical data. Last updated: April 2026

Related Faults

-1General Path Replay Error-11Path Not Found-13Empty Path Data
Source: Kuka KR C2 Robot Controller
Open Manual (Page 29)Search more codes in this manual