On 08/04/2020 08:00 AM, Matthew Herd wrote:
I am guessing that the source of the trouble is probably the VFD, as 80kHz
seems like a plausible base frequency for driving an AC motor. Only the USC
should be operating at a frequency higher than 60Hz other than the VFD. The
machine uses three gecko drives and large steppers, so it’s not very
sophisticated.
I think 80 KHz is a multiple of the frequency of the Gecko
drives. You might try turning off the power to them and see
if the issue changes.
Jon
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