Rockwell Automation 20B PowerFlex 700 AC Drives Vector Control (v4.001 and up) - Manual (Page 138)

138 Rockwell Automation Publication 20B-UM002G-EN-P - July 2014
Appendix C Application Notes
Sleep Wake Mode This function stops (sleep) and starts (wake) the drive based on separately
configurable analog input levels rather than discrete start and stop signals. When
enabled in “Direct” mode, the drive will start (wake) when an analog signal is
greater than or equal to the user specified [Wake Level], and stop the drive when
an analog signal is less than or equal to the user specified [Sleep Level]. When
Sleep Wake is enabled for “Invert” mode
(1)
, the drive will start (wake) when an
analog signal is less than or equal to the user specified [Wake Level], and stop the
drive when an analog signal is greater than or equal to the user specified [Sleep
Level].
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
400 Hz.
Adjusted
Skip Band
w/Recalculated
Skip Frequency
0 Hz
Max.Frequency
Skip
400 Hz.
Adjusted
Skip Band
w/Recalculated
Skip Frequency
0 Hz
60 Hz. Max.
Frequency
Skip Frequency 1
400 Hz.
Inactive
Skip Band
(1) Invert mode is only available with Vector firmware 3.xxx and later.