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F70

Power Unit

Allen-Bradley · PowerFlex 4 Adjustable Frequency

¿Qué significa F70 ?

A fault has been detected within the drive's internal power unit hardware. This indicates a potential malfunction of power components such as the rectifier, DC bus capacitors, or inverter IGBTs.

Causas comunes

  • Internal fault within the drive's power stage (IGBTs, rectifiers).
  • Overvoltage or undervoltage condition on DC bus.
  • Short circuit detected within the drive's power components.
  • Cooling system failure within the drive (fan failure).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Cycle power to the drive by turning it off completely, waiting for all indicator lights to extinguish, and then turning it back on.

  2. 2

    If the fault persists after cycling power, a failure of the drive's power unit is indicated, requiring further technical assessment.

Ver todos los códigos en este manual (24)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Allen-Bradley PowerFlex 4 Adjustable Frequency