YASKAWA Sigma-II Series, Руководство пользователя

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10 Upgraded Versions
10.3.4 Second Stage Notch Filter and Changeable Q Value
10-12
(2) Torque Reference Filtering and Frequency Characteristics
The torque reference filtering and frequency characteristics are shown in the following diagrams.
Note: The frequency characteristics shown above indicate that no response of the speed proportional gain can be
obtained if the difference between the speed proportional gain and the vibration frequency is too small.
•
Setting smaller Q value decreases the response in wider zone around the set frequency.
•
Setting bigger Q value decreases the response in the limited zone at about the set frequency.
(3) Related Parameters
(a) Switch
* The factory setting is 1500 for the models with 5 kW or more.
Frequency
Frequency
Frequency Characteristics When Q is set to 0.7. Frequency Characteristics When Q is set to 2.0.
×
s
ω
c
2
s
2
+
ω
c
2
ω
c
2
s 2
+
Q
(
ω
c
= 2
π
fc)
After torque
reference filtering
Before torque
reference filtering
fc fc
Torque
reference
Torque
reference
Parameter Meaning
Pn408 n. ††† 0
First notch filter disabled
n. ††† 1 Use first notch filter.
n. † 0 †† Second notch filter disabled
n. † 1 †† Use second notch filter.
Pn409
First Stage Notch Filter Frequency
Setting Range Setting Unit Factory Setting Setting Validation
50 to 2000 1 Hz 2000* Immediately
Pn40A
First Stage Notch Filter Q Value
Setting Range Setting Unit Factory Setting Setting Validation
50 to 400
(0.50 to 4.00)
×
0.01
70
(0.70)
Immediately
Pn40B
Second Stage Notch Filter Frequency
Setting Range Setting Unit Factory Setting Setting Validation
50 to 2000 1 Hz 2000 Immediately
Pn40C
Second Stage Notch Filter Q Value
Setting Range Setting Unit Factory Setting Setting Validation
50 to 400
(0.50 to 4.00)
×
0.01
70
(0.70)
Immediately
Speed
Position
Torque
Speed
Position
Torque
Speed
Position
Torque
Speed
Position
Torque