Omron SYSDRIVE 3G3RV, User Manual

Page: 337 / 446

Individual Functions
6-
121
n
PID Fine Adjustment Methods
This
section explains the fine adjustment of PID after setting the PID control constants.
Suppressing Overshoot
If
overshoot occurs, reduce derivative time (D), and increase integral time (I).
Set a Rapidly Stabilizing Control Condition
To
rapidly stabilize the control even if overshoot occurs, reduce integral time (I), and lengthen derivative time
(D).
Suppressing Long-cycle Vibration
If
vibration occurs with a longer cycle than the integral time (I) set value, the integral operation is too strong.
Lengthen
the integral time (I) to suppress the vibration.
Response
Before adjustment
After adjustment
Time
Response
Before adjustment
After adjustment
Time
Response
Before adjustment
After adjustment
Time