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Rockwell Automation Publication 20Y-UM001F-EN-P - April 2017
Preface
Benefits of the AFE
The PowerFlex Active Front End provides these benefits:
• Energy savings with regenerative braking – instead of wasted energy
with resistor brake technology, regenerative braking puts the energy
back into the system to be used by other equipment.
• Low AC input harmonics – the active front end provides low harmonics
to meet IEEE 519 and CE at its input terminals.
• Improved power factor – the AFE actively controls the power factor
regardless of motor speed and load. In addition, the PowerFlex AFE can
be used for power factor correction on the power system.
• Voltage boost – the AFE boosts the DC voltage. See
for guidelines regarding voltage boost. This voltage boost also
helps protect critical processes from the potentially disruptive effects of
input voltage dips and sags.
ATTENTION:
The PowerFlex Active Front End can be used for voltage boost,
but cannot be used to lower the DC bus voltage. The minimum DC bus voltage
is limited by the rectified diode bridge voltage.
Summary of Contents for Allen-Bradley PowerFlex 700AFE
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Page 164: ...164 Rockwell Automation Publication 20Y UM001F EN P April 2017 Appendix B HIM Overview Notes ...
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