Specifications

VFD‐G7 Series Frequency Inverter Operation ManualChapter 6 Functional Parameter Detail
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115
obtainvialinearchange
By setting the speed regulator proportional coefficient and integral time, can adjust the
dynamicresponsespeedofvectorcontrol.Increasingtheproportionalgainandreducingthe
integrationtime,canacceleratethedynamicresponseofspeedloopdynamic,buttoolarge
proportional gain or too small integration time
 easily lead to system oscillation, and
excessiveovershoottoosmallProportionalgaincaneasilycausethesystemtosteadystate
oscillation,andspeedstaticerror.
PIspeedloopparametersandtheinertiaofthemotorsystemhavecloserelationship.Users
needtoadjustitbasedondefaultPIparametersof
differentloadcharacteristicstomeetthe
requirementsofvariousoccasions
.
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F3.15 Coefficient of VC slip compensation
Default:
100%
Setting scope：0～200%
Fornovelocitysensorvectorcontrol,thisparameterisusedtoadjustmotor'sspeedcontrol
precision. Increase the parameter if the motor load speed is low, conversely, it is in
converse.
F3.16
The upper limit of reference
torque
Default: 150.0%
Setting scope：0.0～200.0%
rated current of frequency
inverter
Thereferencevalue100%correspondstotheratedoutputcurrentofdrive.
F3.17 Choice of torque setting mode Default: 0
Setting scope：0～4
Torque instruction input channel of frequency inverter is defined. When torque is set to
minus,themotorwillreverse.
0:Keypaddigitalfrequencyset
1:AnalogueV1setting
2:AnalogueV2setting
3:AnalogueinputV1+V2