26106

Overcurrent, KPP/KSP (axis)

Kuka · KR C4 Controller

What does 26106 mean?

This fault signifies a brief overcurrent event that exceeds the maximum current capacity of the KPP. Such events are typically caused by short-circuits or sudden, excessive load demands, indicating an electrical issue or severe mechanical binding.

Common Causes

  • Short-circuit between phases in the motor cable or within the motor windings.
  • Sudden, high mechanical load or mechanical binding causing a motor stall.
  • Malfunction within the KPP or KSP leading to incorrect current sensing or control.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the trace recording of the axis/current to identify the peak current value and timing.

  2. 2

    Check the motor for shorted windings or mechanical seizure.

  3. 3

    Inspect the motor cable for phase-to-phase or phase-to-ground short circuits.

  4. 4

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

  5. 5

    Inspect KSP (KUKA SmartPAD) and KPP (KUKA Power Pack) components for damage.

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Verified technical data. Last updated: March 2026

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