Hey, guys. Looking for a little insight into a drive I barely have any experience with (and wish I had less).
Had one of these drives shut down on me. Found a blown RS resistor and shorted IGBT. Replaced both of those and now I get no faults when I power on, but as soon as I put in any direction (regen direction or otherwise), I get a bus overvoltage. Watched the scaled bus voltage on that one board I obviously don't know the name of and it stayed around 640. Which is quite a few hundred volts of the 1000VDC needed to trigger that fault.
Any ideas?
