295
2
P
ARAM
ETE
R
PARAMETER
2.9.7
Notch filter [Pr. 862, 863]
(A700)
You can reduce the response level of speed control in the
resonance frequency band of the mechanical system to
avoid mechanical resonance.
(1) Notch filter time constant [
Pr. 862
]
If you do not know the mechanical resonance
frequency, decrease notch frequency gradually from
the highest value. The point at which the smallest
vibration is generated is the notch frequency setting.
Machine characteristic can be obtained beforehand
with machine analyzer by FR Configurator.
Necessary notch frequency can be determined from
this.
(2) Notch filter depth [
Pr. 863
]
The notch filter with deeper depth has an effect on
minimizing mechanical resonance. However, large
vibration may be generated adversely due to
substantial phase delay. Adjust notch depth from the
shallower depth.
A700
[
Pr.
]
Name
Initial Value
Setting Range
Description
862
Notch filter time constant
0
0 to 60
Refer to the following table
863
Notch filter depth
0
0 to 3
0 (deep)
3 (shallow)
[
Pr. 862
]
Setting
Frequency
[
Pr. 862
]
Setting
Frequency
0
Invalid
30
33.3
1
1000
31
32.3
2
500
32
31.3
3
333.3
33
30.3
4
250
34
29.4
5
200
35
28.6
6
166.7
36
27.8
7
142.9
37
27.0
8
125
38
26.3
9
111.1
39
25.6
10
100
40
25.0
11
90.9
41
24.4
12
83.3
42
23.8
13
76.9
43
23.3
14
71.4
44
22.7
15
66.7
45
22.2
16
62.5
46
21.7
17
58.8
47
21.3
18
55.6
48
20.8
19
52.6
49
20.4
20
50
50
20.0
21
47.6
51
19.6
22
45.5
52
19.2
23
43.5
53
18.9
24
41.7
54
18.5
25
40
55
18.2
26
38.5
56
17.9
27
37
57
17.5
28
35.7
58
17.2
29
34.5
59
16.9
60
16.7
Setting
3
2
1
0
Depth
Shallow
Deep
Gain
-
4dB
-
8dB
-
14dB
-
40dB
Summary of Contents for FR-A700 Series
Page 245: ...279 2 PARAMETER PARAMETER MEMO ...
Page 440: ...474 PARAMETER MEMO ...
Page 522: ...556 SELECTION MEMO ...
