6
6-9
6-3 Notch Filter
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
Applied Functions
Notch Filter Width and Depth
Width Setting
This is the ratio of the frequency bandwidth at a damping factor of -3 [dB] relative to the center
frequency when the depth is 0. This value should conform to the left column in the table below.
Depth Setting
This is the I/O ratio at which the center frequency input is completely cut off at a set value of 0 and completely
passed at a set value of 100. If the indication unit is [dB], this value should conform to the right column in the
table below.
Width Depth
Set value
Bandwidth/center frequency
Set value I/O ratio (%)
Damping factor (dB)
0 0.50 0 0 (Cut off) −∞
10.59 11−40.0
20.71 22−34.0
30.84 33−30.5
41.00 44−28.0
51.19 55−26.0
61.41 1010−20.0
71.68 1515−16.5
82.00 2020−14.0
92.38 2525−12.0
10 2.83 30 30 −10.5
11 3.36 35 35 −9.1
12 4.00 40 40 −8.0
13 4.76 45 45 −6.9
14 5.66 50 50 −6.0
15 6.73 60 60 −4.4
16 8.00 70 70 −3.1
17 9.51 80 80 −1.9
18 11.31 90 90 −0.9
19 13.45 100 100 (Passed) 0.0
20 16.00
Notch filter frequency characteristics
−
30
−
25
−
20
−
15
−
10
−
5
0
5
10
000100101
Frequency [Hz]
Gain [dB]
−
3[dB]
Depth 0, width 4
Depth 50, width 4
Depth 0, width 8
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