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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
Cycle power to the drive by turning it off completely, waiting for all indicator lights to extinguish, and then turning it back on.
- 2
If the fault persists after cycling power, a failure of the drive's power unit is indicated, requiring further technical assessment.
Datos técnicos verificados. Última actualización: March 2026
Fallas relacionadas
Fuente: Allen-Bradley PowerFlex 4 Adjustable Frequency