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60

External interlock activated

Danfoss · VLT HVAC Drive High Power

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An external interlock, configured to stop the drive, has been activated via a digital input. This prevents the drive from operating until the interlock condition is cleared and a reset signal is sent, ensuring safety or process integrity.

Causas comunes

  • An external safety circuit (e.g., E-stop, guard switch) connected to a digital input has been activated.
  • A process fault signal (e.g., high temperature, low pressure, level switch) has triggered an interlock via a digital input.
  • Wiring fault to the digital input (e.g., loose wire, short to common) causing a false interlock signal.
  • Incorrect configuration of a digital input function (e.g., P5-10 to P5-15) leading to unintended interlock activation.
  • Faulty external sensor or switch providing a continuous interlock signal.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    1. Identify the specific digital input (e.g., DI1, DI2) configured as an interlock using parameters P5-10 to P5-15.

  2. 2

    2. Monitor the status of the identified digital input in the drive's monitoring menu (e.g., P16-20) to confirm its active state.

  3. 3

    3. Trace the wiring from the digital input terminal back to the interlock device (e.g., limit switch, safety relay).

  4. 4

    4. Verify the physical state of the interlock device (e.g., check if a guard is open, if an E-stop button is pressed).

  5. 5

    5. Confirm the digital input parameter (e.g., P5-10) is correctly set for the desired logic (e.g., Normally Open/Normally Closed).

  6. 6

    6. Test the external interlock device and its wiring for continuity with a multimeter to ensure proper operation.

Ver todos los códigos en este manual (60)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Danfoss VLT HVAC Drive High Power