Rockwell Automation 20B PowerFlex 70, PowerFlex 700 Reference Manual - Manual (Page 122)

Notch Filter
122 Rockwell Automation Publication PFLEX-RM001H-EN-P - June 2013
Figure 26 Resonance
The insert shows the resonant frequency in detail.
Figure 27 shows the same mechanical gear train as Figure 26 . [Notch Filter Freq]
is set to 10.
Figure 27 10 Hz Notch