F3117

Actual position values validation error

Bosch Rexroth · IndraDrive MPx02

What does F3117 mean?

An error occurred during the validation of actual position values, likely from a safety-related encoder. This means the system detected inconsistencies or implausible values in the position feedback, crucial for safety functions. This can indicate a problem with the encoder, its signal, or the validation logic, leading to a safety stop.

Common Causes

  • Encoder signal disturbance or corruption
  • Discrepancy between redundant encoder channels (if used)
  • Encoder hardware defect causing erratic readings
  • Software error in position value validation algorithm
  • External mechanical disturbance affecting encoder accuracy

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the encoder feedback cable for physical damage, proper shielding, and secure connections at both the encoder and the IndraDrive MPx02.

  2. 2

    Measure and verify the encoder's supply voltage at the drive's feedback connector (or encoder terminal) against the specified nominal voltage range.

  3. 3

    Verify the IndraDrive MPx02 parameters related to the safety encoder type, resolution, and validation settings against the machine documentation and the physically installed encoder.

  4. 4

    Access the IndraDrive MPx02's diagnostic screens or logs for additional encoder-specific fault codes or warnings that may provide further insight into the validation error.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Bosch Rexroth IndraDrive MPx02