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ErrorLib — Industrial Fault Code Library

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STOP 2

Safety Stop 2

Kuka · Industrial Robots Use & Programming

What does STOP 2 mean?

A Safety STOP 2 has been triggered and is monitored by the safety controller. During this stop, the robot drives remain activated and the brakes are released. The manipulator and any external axes are decelerated using a path-maintaining braking ramp, and a safe operational stop is initiated upon reaching standstill.

Common Causes

  • Changing the operating mode (e.g., T1, T2, AUT, AUT EXT) while a robot program is currently running.
  • Brief release of an enabling switch (a panic position press would trigger STOP 1).
  • Holding two enabling switches simultaneously in the center position for an extended period.
  • Safety controller detecting a condition requiring a controlled stop without immediate power removal.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Avoid changing the operating mode (e.g., T1, T2, AUT, AUT EXT) during active robot program execution.

  2. 2

    Verify the proper function and handling of the enabling switches on the KCP.

  3. 3

    Acknowledge any pending messages on the smartPAD.

  4. 4

    Confirm all safety conditions are met, then re-enable the robot.

Browse all codes in this manual (6)
Verified technical data. Last updated: April 2026

Related Faults

Active commands inhibitedActive Commands InhibitedGENERAL MOTION ENABLEGeneral Motion Enable LostSTOP 0Safety Stop 0
Source: Kuka Industrial Robots Use & Programming
Open Manual (Page 243)Search more codes in this manual