Drivecon F9 fault code meaning
Drivecon / F9
Series: XR, XT
Undervoltage
AC drive
Meaning: DC-bus voltage has dropped below In case of temporary supply voltage 335Vdc (65% level of device break, reset the fault and start minimum nominal voltage 380V) again. Check mains input. mains supply voltage <0.65 x Un If mains supply is correct, an inverter fault can also cause an internal failure has occurred. undervoltage trip Contact Drivecon service.
Possible causes
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