Operating Instructions

Descriptions of Parameter Settings
Descriptions of Parameter Settings
237 | 443
Fig. 111:
Pr.
Explanation
Settings
Default
11-13
PDFF gain value
0 to 200%
30
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 reduces the speed transient
fluctuation at a sudden loading.
Ensure that you set the Pr.11-01 system inertia correctly to get excellent improvement of the speed response.
Fig. 112:
Pr.
Explanation
Settings
Default
11-14
ASR output low pass filter time
0.000 to 0.350 sec.
0.008
Sets the ASR command filter time.
Pr.
Explanation
Settings
Default
11-15
Notch filter depth
0 to 20 db
0
11-16
Notch filter frequency
0.00 to 200.00 Hz
0.00
Sets the resonance frequency of the mechanical system. Adjust it to a smaller value to suppress the mechanical
system resonance.