What would cause the ATV930 process drive to get a precharge capacitor fault?

Resolution:
In a configuration where the drive is connected and supplied by another drive via the DC bus, set DCBS parameter (Generic Functions/DC-Bus Ref Link) to "Drive with REC" as shown in the attachment. This will avoid "Precharge Capacitor" faults due to power supplied direct to the DC bus.

[Complete settings] -> [Generic functions] -> [dbS] -> [dCbS] -> [Drive with REC]

More details can be found on page 441 of the ATV900 Programming Manual:
https://www.schneider-electric.com/en/download/document/NHA80757/

Note: the ATV600 series is not designed for applications where the DC bus is powered from an external DC source.

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If this FAQ did not solve your issue, you can call us at 1-888-778-2733 Option 2 and then 4 or e-mail us at drive.products.support@se.com to create a case with our Technical Support Team.

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