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F48

Parameters Defaulted

Allen-Bradley · PowerFlex 40 Adjustable Frequency

¿Qué significa F48 ?

This fault indicates that the drive was commanded to write default parameter values to its EEPROM memory. This action resets all user-configured parameters to their factory default settings.

Causas comunes

  • Manual initiation of a factory reset command via the drive's keypad, HMI, or digital input (e.g., by setting P0-53 [Reset to Defaults] to a specific value).
  • Firmware corruption or an internal memory error within the drive's EEPROM, causing it to revert to default settings.
  • Unexpected power cycle or voltage fluctuation during a parameter write operation, leading to data corruption and a default load on reboot.
  • Incompatible parameter file loaded into the drive, triggering an internal check that defaults parameters.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Verify if a factory reset was intentionally performed by reviewing recent operator actions or machine log files.

  2. 2

    Reload the last known good parameter set into the drive using a software tool (e.g., Connected Components Workbench) or by manually entering values.

  3. 3

    Check parameter P0-53 [Reset to Defaults] to ensure it is set to '0' (No action) after reloading parameters.

  4. 4

    Monitor the drive's power supply for stability and proper voltage levels using a true RMS multimeter over several power cycles.

  5. 5

    If parameter defaulting persists, back up parameters and then replace the drive, as this may indicate internal memory hardware failure.

Ver todos los códigos en este manual (26)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Allen-Bradley PowerFlex 40 Adjustable Frequency