Notch Filter (Pr. 862, Pr. 863) - Mitsubishi Electric FR-A700 Instruction Manual

Parameter
6.3.7

Notch filter (Pr. 862, Pr. 863)

You can reduce the response level of speed control in the resonance frequency band of the
mechanical system to avoid mechanical resonance.
Pr.
Name
No.
Notch filter time
862
constant
863
Notch filter depth
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-Configu-
rator. Necessary notch frequency can be determined from this.
Setting
Frequency
Setting
Frequency
Setting
Frequency
Setting
Frequency
Setting
Frequency
Setting
Frequency
Setting
Frequency
Notch filter depth (Pr. 863)
Setting
Attenuation
FR-A700 EC
Speed control by real sensorless vector control, vector control
Initial
Setting Range Description
Value
0 0–60 Refer to the following table
0 (deep) → 3 (sharrow)
0 0–3
0 1 2
— 1000 500
10 11 12
100 90.9 83.3
20 21 22
50 47.6 45.5
30 31 32
33.3 32.3 31.3
40 41 42
25.0 24.4 23.8
50 51 52
20.0 19.6 19.2
60
16.7
3 2 1
4dB 8dB 14dB
Sensorless Sensorless Sensorless Vector Vector Vector
3 4 5
333.3 250 200
13 14 15
76.9 71.4 66.7
23 24 25
43.5 41.7 40
33 34 35
30.3 29.4 28.6
43 44 45
23.3 22.7 22.2
53 54 55
18.9 18.5 18.2
0
40dB
Parameters referred to
—
6 7 8
166.7 142.9 125
16 17 18
62.5 58.8 55.6
26 27 28
38.5 37 35.7
36 37 38
27.8 27.0 26.3
46 47 48
21.7 21.3 20.8
56 57 58
17.9 17.5 17.2
Refer to
Section
9
111.1
19
52.6
29
34.5
39
25.6
49
20.4
59
16.9
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