Specifications

 Chapter6FunctionalParameterDetailVFD‐G7SeriesFrequencyInverterOperationManual

108
when trip-free 50.00Hz/s
When the frequency scale of decrease after power cut immediately is set to 0, frequency
dropfunctionafterpowercutimmediatelyisinvalid.
Frequency point drop after power cut immediately: after the power grid power down,
busbarvoltageisdowntoFrequencypointdropafterpowercutimmediately,thefrequency
inverter
begintolow therunningfrequencyaccordingto frequencyscaleofdecreaseafter
powercutimmediatelytoReservethemotoringeneratingstateandtomaintainthebusbar
voltage by the feedback electric energy, which could guarantee the normal running of
frequencyinverteruntilthenextpoweron.
Adjusting these
two parameters properly could avoid the production halt caused by
frequencyinverterprotectionduringpowergridswitch.
6.3 F2 VF Control Parameter Group
F2.00 V/F curve setting Default: 0
Setting scope：0～3
ThisgroupfunctioncodeisvalidtoV/Fcontrol(F0.14=1),andisinvalidtovectorcontrol.
0: Linear V/F curve, it is applied to constant torque load, the output voltage is linear with
outputfrequency.
1:2.0timespowerdroptorqueV/Fcurve,seethecurveinfigure6‐7;
2:
CustomV/Fpercentage,itcanrealizemanualenergysavingcontrolbyadjustingF2.09;
3:MultipointVFcurve,itcansettheneededV/FcurvethroughfunctioncodeF2.03~F2.08.
Figure 6-7 Illustration of V/F curve