Datasheet

№SR-ZSV00039 － 39 －
Motor Business Unit, Appliances Company, Panasonic Corporation
5－2－3 Notch Filter
When the mechanical stiffness is low, resonance due to axis distortion, etc. may generate vibration or noise,
in which case a high gain cannot be specified. In that case, specifying a higher gain or reducing vibra-
tions is made possible by suppressing a resonance peak with the notch filter.
1）Related parameter
It is possibility to adjust the frequency、width、depth,four related parameter can be used.
Category
No.
Parameter Setup range
Unit
Function
2 1 1
st
Notch frequency 505000 Hz
Specifies the center frequency of the first notch filter.
Specifying 5000 disables the notch filter.
2 2
1
st
notch width
selection
020 -
Specifies the frequency width of the first notch filter.
2 3
1
st
notch depth
selection
0-99 -
Specifies the depth at the center frequency of the first notch filter.
2 4 2
nd
notch frequency 505000 Hz
Specifies the center frequency of the second notch filter.
Specifying 5000 disables the notch filter.
2 5
2
nd
notch width
selection
020 -
Specifies the frequency width of the second notch filter.
2 6
2
nd
notch depth
selection
099 -
Specifies the depth at the center frequency of the second notch
filter.
2 7
3
rd
Notch frequency
*1
505000 Hz
Specifies the center frequency of the third notch filter.
Specifying 5000 disables the notch filter.
2 8
3
rd
notch width
selection *1
020 -
Specifies the frequency width of the third notch filter.
2 9
3
rd
notch depth
selection *1
099 -
Specifies the depth at the center frequency of the third notch filter.
2 10
4
th
Notch frequency
*1
505000 Hz
Specifies the center frequency of the fourth notch filter.
Specifying 5000 disables the notch filter.
2 11
4
th
notch width
selection *1
020 -
Specifies the frequency width of the fourth notch filter.
2 12
4
th
notch depth
selection *1
099 -
Specifies the depth at the center frequency of the fourth notch filter.
*1 When the adaptive filter function is used, the parameter value is automatically specified.
2）Usage
Specify a resonance frequency on the basis of the frequency characteristics measurement function of the
setup support software, or operating waveform on the waveform graphic function, and specify a Notch
frequency for use.
3）Notch width/depth
A value on the left of the following table is specified for a width of Notch filter, which is a ratio of fre-
quency band width in which damping factor becomes –3 [dB] against the Notch center frequency with
depth of “0.”
The depth of a notch filter is an I/O ratio that provides the complete interruption of the center frequency
input with a setting of 0 and complete passage with a setting of 100. In [dB], the values are as shown
in the rightmost column of the table below on the right.