Specifications

 Chapter6FunctionalParameterDetailVFD‐G7SeriesFrequencyInverterOperationManual

148
150%
In the running process of frequency inverter, by detecting busbar voltage and comparing
withtheover‐voltagestallpointdefinedbyFb.03(relativetostandardbusbarvoltage),ifit
exceedsover‐voltagestallpoint,theoutputfrequencyoffrequencyinverterwillstopfalling,
and will continue to slow down again until
 the detecting busbar voltage is below
over‐voltagestallpoint.
Fb.04
rapid current-limiting
standard
Default：170% setting range：100～200%
Fb.05
Frequency decrease rate in
current limiting
Default：0.00Hz/s setting range: 0.00 ～
50.00Hz/s
Whenthefrequencyinverterisrunning,butoverloadandmotoractualspeedriseleesthan
theraiserateof frequency, ifwe don’ttakemeasures, it will causethe frequency inverter
tripcausedbyacceleratedover‐currentfault.
The protect function of over‐current and loss speed could compare with Fb.04
 rapid
current‐limitingstandardthroughcheckingcurrent,whenthefrequencyinverterisrunning.
If the limit‐current point is exceeded, output frequency of the frequency inverter will act
Fb.05 order. And when the output current is lower than the limit‐current standard, it will
recovernormaloperation.Asshowfigure
6‐20