Rockwell Automation 20C PowerFlex 700H Drives Programming - Manual (Page 98)

98 Rockwell Automation Publication 20C-PM001F-EN-P - March 2012
Appendix B Application Notes
Skip Frequency Examples
The skip frequency will have hysteresis
so the output does not toggle between
high and low values. Three distinct
bands can be programmed. If none of
the skip bands touch or overlap, each
band has its own high/low limit.
If skip bands overlap or touch, the
center frequency is recalculated based
on the highest and lowest band values.
If a skip band(s) extend beyond the max
frequency limits, the highest band
value will be clamped at the max
frequency limit. The center frequency is
recalculated based on the highest and
lowest band values.
If the band is outside the limits, the skip
band is inactive.
0 Hz
Skip Frequency 2
Skip Frequency 1
Max. Frequency
Skip Band 1
Skip Band 2
0 Hz
Skip Frequency 2
Skip Frequency 1
320 Hz.
Adjusted
Skip Band
w/Recalculated
Skip Frequency
0 Hz
Max.Frequency
Skip
320 Hz.
Adjusted
Skip Band
w/Recalculated
Skip Frequency
0 Hz
60 Hz. Max.
Frequency
Skip Frequency 1
320 Hz.
Inactive
Skip Band