F3146

System error channel 2

Bosch Rexroth · IndraDrive MPx02

What does F3146 mean?

This non-fatal safety error indicates a system-level fault detected within channel 2 of the safety functions on the IndraDrive MPx02. Safety systems often employ dual-channel architecture for redundancy, and an error in one channel means its independent operation or monitoring has failed.

Common Causes

  • Internal hardware fault within channel 2 of the IndraDrive MPx02's safety module.
  • Component failure in the signal path of channel 2 for safety inputs or outputs.
  • Firmware or software issue affecting the processing logic of channel 2.
  • Electromagnetic interference specifically affecting channel 2 components.
  • Damage to the internal PCB or safety-related components specific to channel 2.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Perform a full power cycle of the IndraDrive MPx02 to attempt to clear transient internal faults.

  2. 2

    Check for any external wiring issues or component failures that are specifically connected to safety functions monitored by channel 2.

  3. 3

    Verify the firmware version of the IndraDrive MPx02 and update to the latest compatible version if necessary.

  4. 4

    Ensure proper grounding and shielding to mitigate electromagnetic interference that could affect internal circuits.

  5. 5

    If the error persists after thorough external checks, this typically indicates an internal hardware defect within the IndraDrive MPx02's safety module, requiring replacement or professional repair.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Bosch Rexroth IndraDrive MPx02