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ErrorLib — Industrial Fault Code Library

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F109-48

Fault in reference voltage

SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive

What does F109-48 mean?

The reference voltage input of the encoder system is outside of its defined operational range. This can impact the accuracy or functionality of the encoder.

Common Causes

  • Internal reference voltage used for analog measurements is unstable.
  • Faulty voltage reference circuit within the device.
  • External reference voltage is out of specification.
  • Calibration error related to reference voltage.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the reference voltage input of the encoder system.

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

Related Faults

F108-101Internal processing fault PROFIsafeF108-103Internal processing fault PROFIsafeF108-105Internal processing fault PROFIsafe
Source: SEW Eurodrive MOVIDRIVE MDX60B/61B Variable Speed Drive
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