In my DCS 800 drives armature current reversed for some sec. And again comes as it is.
In some times my drive shows mains low voltage f512 fault but my mains voltage is proper, also i checked its all fuse, found proper.
Answer this question Follow
Does the armature current reversal and then back to forward happen immediately before the F512 occurs? If so, maybe a hard regen and then back to fwd driving is causing a line sag/surge during high current draw on a weak supply.
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