9

Startup Error / Phase Sequence

SEW Eurodrive · MOVIFIT SC

What does 9 mean?

This fault encompasses two distinct startup issues. In 'dual-motor operation', it signifies an incorrect line phase sequence, preventing motors from running in the intended clockwise direction. In 'single-motor operation', it means an unexpected current (over 10% IN,unit) is detected on drive 2, usually due to incorrect wiring, such as a drive connected to X9 or two drives being present when only one is allowed. Both scenarios prevent proper unit startup and operation, risking mechanical stress to connected equipment or uncontrolled motor movement.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Confirm that the operating mode selected in the MOVIFIT unit's configuration (single-motor vs. dual-motor) accurately matches the physical wiring and application.

Source: SEW Eurodrive MOVIFIT SC
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