Rockwell Automation 20D PowerFlex 700S AC Drives with Phase II Control Reference Manual - Manual (Page 125)

Rockwell Automation Publication PFLEX-RM003E-EN-E - January 2011 125
Detailed Drive Operation Chapter 1
Table 14 - Skip Speed Examples
A The skip speed 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.
B If skip bands overlap or touch, the center
speed is recalculated based on the highest
and lowest band values.
C If a skip band(s) extends beyond the speed
limits, the highest band value will be
clamped at the speed limit. The center speed
is recalculated based on the highest and
lowest band values.
D If the band is outside the speed limits, the
skip band is inactive.
Fwd Speed Limit
Skip Speed 1
Skip Speed 2
0 RPM
Skip Band 1
Skip Band 2
Skip Speed 1
Skip Speed 2
0 RPM
Adjusted
Skip Band
w/Recalculated
Skip Frequency
Skip Speed 1
0 RPM
Adjusted
Skip Band
w/Recalculated
Skip Frequency
Fwd Speed Limit
Skip Speed 1
0 RPM
Inactive
Skip Band
Fwd Speed Limit