norunningintheplant
Member
I have an auger powered by an induction motor under flux vector torque control driven by a PowerFlex755. According to my log, the command velocity was ramping up at a reasonable rate while the actual velocity was lagging behind. As soon as the command velocity began ramping down again, the actual motor velocity ran away up to the drive speed limit and shut down. I have included a a screencap of the log showing the velocities. https://imgur.com/a/MWtlVRm
How/why would this happen? PID instability? I'm at a loss. Thanks
How/why would this happen? PID instability? I'm at a loss. Thanks
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