F108-156

Faulty RAM test

SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive

What does F108-156 mean?

A fault was detected during the internal RAM test of the DCS..B option. This indicates an issue with the memory component crucial for operation.

Common Causes

  • RAM test failed during system initialization.
  • Specific RAM cells are not responding correctly.
  • Memory controller unable to access RAM sectors.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace DCS..B option.

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Verified technical data. Last updated: March 2026

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Source: SEW Eurodrive MOVIDRIVE MDX60B/61B Variable Speed Drive