Chapter 12 Descriptions of Parameter SettingsC2000 Plus
12.1-11-6
11-13
PDFF Gain Value
Default: 30
Settings 0–200%
This parameter is invalid when Pr.05-24 = 1.
This parameter is valid only when Pr.11-00 bit0 = 1.
After you estimate and set Pr.11-00 bit0=1 (auto-tuning), use Pr.11-13 to reduce overshoot.
However, a shift of the curve may occur earlier. In this case, you can set Pr.11-13 = 0 first, and
then increase the setting value to "a condition with best acceleration and without overshoot"
when the acceleration time meets your application but overshoot occurs.
Increasing Pr.11-13 improves the overshoot of speed tracking, but an excessive value may
reduce the transient response.
Increasing Pr.11-13 enhances the system stiffness in high-speed steady state, and reduce the
speed transient fluctuation at a sudden loading.
Ensure that you set Pr.11-01 system inertia correctly to get excellent improvement of the speed
response.
11-14
ASR Output Low Pass Filter Time
Default: 0.004
Settings 0.000–0.350 sec.
Set the ASR command filter time.
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