Specifications

VFD‐G7 Series Frequency Inverter Operation ManualChapter 6 Functional Parameter Detail

101
cancelledtoshortenthedecelerationtime.
Decade: Reservation
Hundreds: PWM Selection
0:PWMMode1
ThismodeisthenormalPWMmode,themotornoiseislowinlowfrequencyandthemotor
noiseisbiginhighfrequency.
1:PWMmode2
The noise in this running mode is low, but the wavelength is high, it needs to derate if
selecting
thefrequencyinverterofthisfunction.
Kbit: automatic energy saving
0:Invalid
1:Valid
Theautomaticenergysavingcouldbeobtainedbycheckingtheloadcurrent and adjusting
outputvoltageappropriatelywhenthemotorisintheprocessofno‐loadorlightload.This
functionisespeciallyvalidforfanandpumpload.
F0.22
Carrier
frequency
Default:
Machine Type confirmation
Setting scope：
0.5～150.0kHz
This function adjusts the carrier frequency of the frequency inverter. By adjusting carrier
frequency,themotornoisecouldbelower,thepointofresonanceofthemechanicalsystem
couldbeavoided,whichcoulddecreasethedisturbanceofthecircuittothegroundleakage
current and the disturbance generated by the frequency
 inverter. When the carrier
frequencyislower,theoutputcurrentultraharmonicscomponentwillincrease,so theloss
ofmachineandmotortemperaturerising.Whenthecarrierfrequencyishigher,thelossof
machine will lower, the motor temperature rising will lower, but the loss of frequency
inverter will increase, the
temperature rising and disturbance of frequency inverter will
increase. The influence of carrier frequency to the equipment and environment is as the
followingtable:

Motor noise↓