Delta VFD-V Series User Manual

Contents

Delta VFD-V Series User Manual Manual pdf 16 page image

3VFD-V SeriesDELTA ELECTRONICS, INC. ALL RIGHTS RESERVED 3-53.2 External WiringMotorOutput ACLine ReactorPower SupplyMagneticcontactorInput ACLine ReactorEMI FilterR/L1 S/L2 T/L3U/T1 V/T2 W/T3+2/B1B2BrakingResistorZero-phaseReactorDCChoke+1Zero-phaseReactorFUSE/NFBItems ExplanationsPowersupplyPlease follow the specific powersupply requirement shown inAPPENDIX-A.Fuse/NFB(Optional)There may be inrush current duringpower up. Please check the chart ofAPPENDIX B and select the correctfuse with rated current. NFB isoptional.Magneticcontactor(Optional)Please do not use a Magneticcontactor as the I/O switch of the ACdrive, this will reduce the operatinglife cycle of the AC drive.Input ACLineReactor(Optional)In order to improve the input powerfactor, reduces harmonics andprotection from AC linedisturbances. (Surge, switchingspike, power flick, etc.) AC linereactor should be installed when thepower supply capacity is 500kVA ormore and exceeds 6 times of theinverter capacity, or the wiringdistance within 10m.Zero-phaseReactor(FerriteCoreCommonChoke)(Optional)Zero phase reactors are used toreduce radio noise specify when theaudio equipments installed near theinverter. Good effective for noisereduction on both the input andoutput sides. Attenuation quality isgood in a wide range from AM bandto 10Mhz. Appendix B for specifieszero phase reactors. (RF220X00A)EMI filter(Optional)To reduce the electromagneticinterference. Please refer toAppendix B for detail.BrakingResistor(Optional)Used to reduce stopping time of themotor. Please refer to the chart onAppendix B for specific BrakingResistors.Output ACLineReactor(Optional)Motor surge voltage amplitudesdepending on the motor cablelength. For long motor cableapplication, it is necessary installedon the inverter output side.