F3142

Activation time of enabling control exceeded

Bosch Rexroth · IndraDrive MPx02

What does F3142 mean?

This non-fatal safety error indicates that the time taken to activate the enabling control (e.g., Safe Torque Off - STO) on the IndraDrive MPx02 has exceeded its permissible limit. This suggests a delay in the safety circuit's response, which can compromise the safety function's effectiveness.

Common Causes

  • Slow response of external safety relays or contactors in the enabling circuit.
  • Excessive capacitance or inductance in the enabling circuit wiring.
  • Incorrect parameterization of the activation time monitoring in the IndraDrive MPx02.
  • Partial short circuit or high resistance in the enabling circuit.
  • Internal hardware fault in the safety-related input or STO circuit of the drive.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Measure the actual response time of the external safety relays or contactors involved in the enabling circuit.

  2. 2

    Inspect the wiring of the enabling control circuit for excessive length, insufficient wire gauge, or poor connections that could cause delays.

  3. 3

    Verify the configured activation time monitoring parameters in the IndraDrive MPx02 to ensure they are appropriate for the system's response.

  4. 4

    Check the enabling circuit for any partial shorts or high resistance connections that could impede signal activation.

  5. 5

    If the error persists and external components are verified, it may indicate an internal issue with the STO input section of the IndraDrive MPx02.

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Verified technical data. Last updated: March 2026

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Source: Bosch Rexroth IndraDrive MPx02