F109-64

Plausibility fault - SSI encoder connection (master mode)

SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive

What does F109-64 mean?

The connected encoder type does not correspond to the configuration for an SSI encoder operating in master mode. This indicates a mismatch in setup.

Common Causes

  • SSI encoder communication fault when configured as master.
  • Incorrect SSI clock or data signal timing.
  • SSI data packet corruption or missing start/stop bits.
  • Faulty SSI encoder device in master mode.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check configuration.

  2. 2

    Check connected encoder.

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

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