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ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

F13.8

Signal level monitoring

SEW Eurodrive · MOVIDRIVE system

What does F13.8 mean?

An error occurred while monitoring the signal level from Encoder 1, where the signal vector exceeded its permitted limit. This could indicate an issue with the encoder's physical mounting position affecting its signal output or data integrity.

Common Causes

  • Incorrect mechanical mounting or loose coupling of Encoder 1 to the motor shaft, causing unstable signal generation.
  • Vibration or shock impacting Encoder 1 beyond its specified operating limits, leading to signal instability.
  • Intermittent electrical connection or poor shielding on Encoder 1 cable leading to brief signal excursions outside limits.
  • Faulty Encoder 1 sensor element (e.g., resolver windings, optical disc) causing inconsistent signal output.
  • Parameter misconfiguration in the drive's encoder monitoring block (e.g., P6-10 Signal monitoring window) set too strictly.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect Encoder 1's mechanical mounting for tightness, alignment, and absence of excessive vibration.

  2. 2

    Monitor Encoder 1's raw signal output (e.g., sine/cosine) on an oscilloscope to detect vector anomalies.

  3. 3

    Check all Encoder 1 cable connections (e.g., X11) for secure termination and verify shield integrity.

  4. 4

    Review the drive's encoder monitoring parameters (e.g., P6-10) to ensure appropriate limits are set for the application.

  5. 5

    If using a resolver, check the resistance values of the primary and secondary windings against the manufacturer's specifications.

Browse all codes in this manual (60)
Verified technical data. Last updated: April 2026

Related Faults

12.1Brake Output Fault12.224V Brake Voltage Fault13.1Position Comparison Check (Encoder 1)
Source: SEW Eurodrive MOVIDRIVE system
View Official PDFSearch more codes in this manual