Rockwell Automation 22D PowerFlex 40P User Manual, FRN 3 - Manual (Page 189)

PID Set Up G-9
The following figures show some typical responses of the PID loop at
different points during adjustment of the PID Gains.
Figure G.1 Unstable
Figure G.2 Slow Response – Over Damped
Figure G.3 Oscillation – Under Damped
Figure G.4 Good Response – Critically Damped
PID Feedback
PID Reference
Time
PID Feedback
PID Reference
Time
PID Feedback
PID Reference
Time
PID Feedback
PID Reference
Time