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1794

Power data not transferred correctly at power-up to DSP

Danfoss · VLT AutomationDrive FC 301/302

¿Qué significa 1794 ?

Essential power data failed to transfer correctly to the digital signal processor during drive power-up. This indicates a potential internal communication or data integrity issue that prevents proper initialization.

Causas comunes

  • Corruption of stored power section parameters (e.g., voltage, current limits) in non-volatile memory.
  • Timing issue during the DSP boot sequence preventing proper data synchronization from the main processor.
  • Internal communication bus error between the power section measurement unit and the DSP.
  • Transient voltage dip on internal power rails during drive power-up, causing data integrity issues.
  • Faulty or degraded internal sensor (e.g., voltage or current transducer) providing incorrect power data at startup.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Power cycle the drive by disconnecting mains voltage (L1, L2, L3) for at least 60 seconds.

  2. 2

    Verify the stability of the main DC link voltage at terminals DC+ and DC- during power-up using a multimeter.

  3. 3

    Ensure the drive firmware is updated to the latest stable version.

  4. 4

    Perform a factory reset via Parameter P14-22 (Reset options) set to 2 (Load LCP defaults) to clear corrupted data.

  5. 5

    Inspect internal ribbon cables connecting the power board to the control board for secure connections and damage.

Ver todos los códigos en este manual (66)
Datos técnicos verificados. Última actualización: March 2026

Fallas relacionadas

Fuente: Danfoss VLT AutomationDrive FC 301/302