5-18
Q1
Q3
Q2
Q1>Q2>Q3
Frequency
After adding Notch Filter
Gain
The Response Line for Resonance
Gain
Frequency
Frequency
Resonant Frequency
Gain
Response Line for Notch Filter
Cn014(Notch Filter-Quality Factor)
Cn013
(Notch Filter-Frequency
5-3-9 Notch Filter
The function of the Notch filter is to suppress mechanical system resonance.
Resonance occurs due to low mechanical system rigidity (high springiness) of transmission systems
used with servo motors such as couplings, bearings, lead screws, etc.
Enter the mechanical system vibration (resonance frequency) in parameter Cn013 (Notch Filter
frequency) and adjust Cn014 to set the filter bandwidth scaling factor.
Lower the setting of Cn014 value, wider is the notch filter frequency bandwidth. The adjustment
required depends on the application.
Caution!
If Cn013 is set to “0” the Notch filter is disabled.
Parameter Name Default Unit Setting range Control mode
Cn013 Notch Filter frequency 0 Hz 0~1000 Pi/Pe/S
Cn014
Notch Filter Band Width
Scaling factor
7 X 1~100 Pi/Pe/S
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