26133

Collective brake fault, KPP/KSP (axis)

Kuka · KR C4 extended

What does 26133 mean?

This fault indicates an issue detected by the brake cable monitoring device, signaling a short-circuit, overloading, or a break in the brake connection, or that no brake is connected. This compromises the safety function of the motor brake, potentially leading to uncontrolled axis movement or dropped loads.

Common Causes

  • Short-circuit in the brake circuit or brake cable.
  • Overloading of the brake circuit.
  • Break in the brake cable connection.
  • No brake connected to the axis.
  • Fault in the KSP module's brake control.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check brake voltage at the brake terminals (note if fault occurs in all axes).

  2. 2

    Measure the motor brake resistance for opens or shorts.

  3. 3

    Check brake cable and motor cable for damage, continuity, and proper connections.

  4. 4

    Reinitialize the drive bus: Power Off / Power On.

  5. 5

    Check KSP module for faults related to brake control.

Browse all codes in this manual (35)
Verified technical data. Last updated: March 2026

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