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0x4020

Press Unexpectedly Stopped After Starting

Beckhoff · TwinSAFE Logic FB

Was bedeutet 0x4020 ?

The PressStarted input was TRUE, indicating a commanded motion, but the position subsequently stopped ('Stopped' changed to TRUE) after having moved. This suggests an unexpected halt during a commanded press operation, which could be due to an obstruction, overload, or sensor fault, potentially damaging equipment or causing an unsafe state.

Häufige Ursachen

  • Press stopped unexpectedly after starting.
  • Sudden loss of power to the drive.
  • Overload trip during initial movement.
  • Emergency stop activated unintentionally.
  • Control system error causing premature shutdown.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Investigate the mechanical system for any sudden jams, obstructions, or excessive load that might cause an unexpected stop.

  2. 2

    Monitor motor current and drive status for overload conditions or protection trips.

  3. 3

    Check the position sensor for intermittent readings or damage that could falsely indicate a stop.

  4. 4

    Review the process logic for any conditions that might prematurely set the 'Stopped' flag to TRUE during an active PressStarted command.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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