Specifications

VFD‐G7 Series Frequency Inverter Operation ManualChapter 6 Functional Parameter Detail

109
F2.01 Torque boost
Default: 0.0％
Setting scope：0.0％：automatic torque boost
0.1～30.0％
F2.02
Cut-off
frequency o
f
torque Boost
Default: 20.0％
Setting scope：0.0～50.0％(motor rated
frequency)
Torque boost is mainly used in below the cut‐off frequency (F2.02), after boost, the V/F
curveafterboostisshowninfig.6‐8,thetorqueboostcanimprovetheV/Flowfrequency’s
torquecharacteristics.
Selectthevalueoftorqueaccordingthesizeofloads.Thebigloadscanselect
abiggerboost,
butthetorqueboostcannotbesettoobig.Ifthetorqueboostistoolarge,motorwillrun
with over excitation, the output current will increase, the motor will be easy to overheat,
thedrive'soutputcurrentwillbebig,theefficiencywillreduce.
When
thetorqueboostissetto0.0%,theinverterisautotorqueboost.
Cut‐offpointoftorque boost: thelinear V/F curve is valid,under this frequencypoint, the
torqueboostisvalid,overthepoint;thetorqueboostisinvalid.
Figure 6-8 Illustration of torque boost
F2.03
VF point 1 frequency
F1
Default: 20.0%
Setting scope：0.1～F2.05