YASKAWA E-V Series User Manual page 246

(2) Notch Filter
The notch filter can eliminate specific frequency vibration generated by sources such as resonances of ball
screw axes. The notch filter puts a notch in the gain curve at the specific vibration frequency. The frequency
components near the notch frequency can be eliminated with this characteristic. A higher notch filter Q value
produces a sharper notch and phase delay.
Q value = 0.7
100
0
Gain
-100
(db)
-200
-300
2
10
0
-100
Phase
-200
(deg)
-300
-400
2
10
Set the notch filter enabled/disabled with Pn408.
Parameter
n. 0
n. 1
Pn408
n. 0
n. 1
Notch filter
4
3
10
10
Frequency (Hz)
Notch filter
3 4
10
10
Frequency (Hz)
Function
1st notch filter disabled. [Factory setting]
1st notch filter enabled.
2nd notch filter disabled. [Factory setting]
2nd notch filter enabled.
6.8 Servo Gain Adjustment Application Function
Q value = 1.0
Notch filter
100
0
Gain
-100
(db)
-200
-300
2
10 10
Frequency (Hz)
Notch filter
0
-100
Phase
-200
(deg)
-300
-400
2
10 10
Frequency (Hz)
When Enabled
Immediately
3 4
10
3 4
10
Classification
Setup
6
6-65