SCF

MOTOR SHORT CIRCUIT

Schindler · Altivar 312 Drive

What does SCF mean?

This fault indicates a short-circuit or grounding fault at the drive output, affecting the motor connection. It can also be triggered by significant ground leakage current if multiple motors are connected in parallel to the drive.

Common Causes

  • Short-circuit or grounding at the drive output
  • Significant ground leakage current at the drive output if several motors are connected in parallel

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the cables connecting the drive to the motor, and the motor insulation.

  2. 2

    Reduce the switching frequency.

  3. 3

    Connect chokes in series with the motor.

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Verified technical data. Last updated: March 2026

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