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TI71M01D06-01EN 3rd Edition: 2012.12.01
Notch Filters 1 and 2
Notch filters decrease the gain value to almost zero at a certain frequency. Moreover, by
changing the Q value, it is possible to make the filter characteristics sharp or gradual. The
range of frequencies that can be set is from 50 to 1500Hz and the Q value can be set in the
range from 0.1 to 5.0 (the default value is 1.5).
The figures below show the frequency characteristics of the notch filters.
In the case of UD1B
□
3-075
□
- drive ; Notch filter frequency (***Hz) peculiar to a motor is
stuck and displayed on the motor. First of all please set this value as a parameter 20
(frequency notch filter #1) and a parameter 22 (frequency notch filter #2). Then, please tune
the servo.
Gain [dB]
Frequency [Hz]
Frequency [Hz]
Phase [deg]
Notch filter setting frequency
Notch filter setting frequency
CAUTION