EL
ErrorLib
Brands
||
  1. Home
  2. SEW Eurodrive
  3. MOVIDRIVE MDX60B/61B Variable Speed Drive
  4. F108-56
About·Privacy·Terms

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.

F108-56

Faulty watchdog test

SEW Eurodrive · MOVIDRIVE MDX60B/61B Variable Speed Drive

What does F108-56 mean?

The watchdog test within the DCS..B option failed, indicating faulty feedback from the internal shutdown channel of the digital outputs. This implies a safety-critical monitoring failure.

Common Causes

  • Watchdog timer malfunction or timeout.
  • System not responding to watchdog reset requests.
  • Watchdog hardware failure.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Replace DCS..B option.

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
Open Manual (Page 208)Search more codes in this manual