F3145

Error when unlocking the safety door

Bosch Rexroth · IndraDrive MPx02

What does F3145 mean?

This non-fatal safety error indicates a problem encountered during the process of unlocking a safety door or gate, as monitored by the IndraDrive MPx02. This could mean the unlock command was not executed, the feedback was incorrect, or a timeout occurred, preventing safe access.

Common Causes

  • Mechanical fault or binding in the safety door lock mechanism.
  • Electrical fault in the safety door lock actuator (e.g., solenoid, motor).
  • Incorrect feedback from the safety door lock status switch.
  • Wiring issue between the IndraDrive MPx02 and the safety door lock.
  • Incorrect parameterization of the safety door unlocking sequence or timing.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the safety door lock mechanism for any mechanical obstructions, damage, or binding that prevents it from unlocking smoothly.

  2. 2

    Verify the electrical operation of the door lock actuator, checking its power supply and control signals (e.g., 24VDC to unlock).

  3. 3

    Check the feedback signal from the safety door lock status switch to ensure it accurately reflects the lock's state (locked/unlocked).

  4. 4

    Inspect all wiring connecting the IndraDrive MPx02 to the safety door lock and its sensors for damage or loose connections.

  5. 5

    Review safety parameters in the IndraDrive MPx02 related to safety door unlocking sequence and associated timers.

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Verified technical data. Last updated: March 2026

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Source: Bosch Rexroth IndraDrive MPx02