Allen-Bradley PowerFlex 70 User Manual

108 Rockwell Automation Publication 20A-UM001N-EN-P - July 2013
Appendix C Application Notes
Table 20 - Skip Frequency Examples
Skip Frequency Examples
The skip frequency has 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 is
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

Allen-Bradley PowerFlex 70 Specifications

General

Input Voltage	200-240V AC, 380-480V AC, 500-600V AC
Frequency Range	0 - 400 Hz
Humidity	5% to 95% non-condensing
Output Voltage	0 to Input Voltage
Control Methods	Sensorless Vector Control
Communications	Ethernet/IP, DeviceNet, ControlNet
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overtemperature, Ground Fault
Operating Temperature	0°C to 50°C (32°F to 122°F)
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Enclosure Rating	IP20, NEMA Type 1