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16171

Internal Device Error

ABB · AC500

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This critical error indicates a severe, unrecoverable internal malfunction within the safety I/O module itself. This type of fault typically points to a hardware failure or a fundamental firmware issue that cannot be resolved through configuration or external checks, demanding immediate attention.

Häufige Ursachen

  • Malfunctioning internal hardware component (e.g., ASIC, memory chip) within the safety I/O module.
  • Corrupted firmware image or bootloader sector preventing proper module initialization.
  • Over-stress condition (e.g., transient overvoltage beyond 24VDC tolerance) causing permanent damage to internal circuitry.
  • Manufacturing defect in the module's core processing unit.

Reparaturschritte & Checkliste

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

  1. 1

    Record the full fault code and module serial number for manufacturer reference.

  2. 2

    Power cycle the safety I/O module by removing and re-applying its 24VDC supply voltage at terminals X1.1 and X1.2.

  3. 3

    Replace the entire safety I/O module with a new, tested unit if the error persists.

  4. 4

    Verify proper grounding of the new module's chassis to the control cabinet's ground rail.

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Verifizierte technische Daten. Zuletzt aktualisiert: March 2026

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