Omron SYSDRIVE 3G3MV A2002, User Manual

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6-24
4. Increase the integral (I) time in n131 within a range causing no vibration.
5. Increase the derivative (D) time in n132 within a range causing no vibration.
6-3-8 PID Fine Tuning
·
Refer to the following to tune in PID parameters exactly.
·
Suppression of Overshooting
Set the derivative (D) time to a smaller value and the integral (I) time to a larger value if
overshooting results.
Response
Before fine tuning
After fine tuning
Time
·
Prompt Stability
Set the integral (I) time to a smaller value and the derivative (D) time to a large value for
prompt stability control, even though overshooting results.
Response
Before fine tuning
After fine tuning
Time
·
Suppression of Long-cycle Vibration
Vibration with a wavelength longer than the integral (I) time results from excessive inte-
gral control. The vibration can be suppressed by setting the integral (I) time to a larger
value.
Response
Before fine tuning
After fine tuning
Time
Advanced Operation Chapter 6