FF0208h

Lag Error Exceeded

SEW Eurodrive · MOVI-PLC SyncCrane Application

What does FF0208h mean?

This fault occurs when the defined lag error window is exceeded in automatic mode. The lag error represents the distance from the external encoder position to the virtual master encoder position. Exceeding this set tolerance causes the axis system to stop to maintain synchronized operation.

Common Causes

  • The actual position deviates from the commanded position beyond a defined tolerance.
  • Motor encoder feedback is not keeping up with motion demands.
  • Inadequate servo loop tuning leading to excessive tracking error.
  • Mechanical load or inertia exceeding controller capabilities.
  • High acceleration or velocity commands causing position lag.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the configured 'Lag error window' startup parameter to ensure it is appropriate for the application's synchronization requirements.

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Verified technical data. Last updated: March 2026

Related Faults

Source: SEW Eurodrive MOVI-PLC SyncCrane Application