26033

Ground fault, KPP/KSP (axis)

Kuka · KR C4 Operating Instructions

What does 26033 mean?

An overcurrent condition has occurred in the power unit, specifically indicating a ground fault. This suggests an insulation breakdown or a short circuit to ground within the motor or its associated cabling, posing a safety risk.

Common Causes

  • Ground fault detected on the KPP/KSP drive or motor.
  • Leakage current from a power conductor to ground.
  • Insulation failure in motor windings or power cables.
  • Faulty KPP/KSP internal shielding.
  • Incorrect grounding connection.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the motor cable for physical damage, shorts to ground, or insulation breakdown using an insulation tester (megger).

  2. 2

    Check the motor for internal ground faults or winding damage by measuring winding resistance and insulation resistance.

  3. 3

    Reinitialize the drive bus by performing a Power Off / Power On cycle of the entire system.

  4. 4

    Check the KSP module for diagnostic indicators related to power unit status.

  5. 5

    Check the KPP module for diagnostic indicators related to power unit status.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Kuka KR C4 Operating Instructions