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tnF

AUTO TUNING FAULT

Schindler · Altivar 312 Drive

Was bedeutet tnF ?

This fault indicates that the auto-tuning procedure, which measures motor parameters, was unsuccessful. This can happen if motor parameters are incorrectly configured prior to auto-tuning, or if the procedure is interrupted.

Häufige Ursachen

  • Incorrect configuration of motor parameters ([Rated motor volt.] (UnS), [Rated motor freq.] (FrS), [Rated mot. current] (nCr), [Rated motor speed] (nSP), [Motor 1 Cosinus Phi.] (COS)) before performing auto-tuning.
  • Auto-tuning procedure was interrupted or did not complete successfully.
  • The [Auto-tuning state] (tUS) parameter on page 43 or 103 reports [Failed] (FAIL).

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Verify that parameters [Rated motor volt.] (UnS), [Rated motor freq.] (FrS), [Rated mot. current] (nCr), [Rated motor speed] (nSP), and [Motor 1 Cosinus Phi.] (COS) are correctly configured (page 43).

  2. 2

    Repeat the [Auto tuning] (tUn) operation (page 43).

  3. 3

    Ensure no command has been activated and no "freewheel stop" or "fast stop" function is assigned to a logic input during auto-tuning.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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