点击图片查看原图
从理论上分析，如果能够控制电动机同步磁场的转速缓慢下降，使电动机在同一转速下特性跳转时，特性曲线维持在第一象限，理论上分析电机只经历有限的能耗制动阶段，不会过热。而变频器良好的内、外特性可以保证上述各项条件的满足。
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
厦门仲鑫达自动化设备有限公司
联系人：张美凤
手机：18020776791
电话：0592-5321698
传真：0592-5165561 备注张美凤收
Q Q ：2834489926
地址；厦门思明区湖滨东路湖光大厦8楼A单元
★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★★
?
但是，采用该方法有一些必要的前提条件，首先，系统不能频繁进行启／停，否则会造成变频器直流电路故障。其次，提升机、电梯等下放重物的工况不适宜采用。再次，系统降速时间不能过短，即降速不能过快，否则工作点将进入第二象限发生再生制动过程，引起电机过热。 A5E00470986 Panel PC Spare Part Siemens
A5E00470994 Panel PC Spare Part Siemens
A5E00478520 SATA RAID CONTROLLER,SPARE PART Siemens
A5E00487939 Panel PC Spare Part Siemens
A5E00497260-03 Siemens Moore Module Moore
A5E00693500 Panel PC Spare Part Siemens
A5E00707896 Panel PC Spare Part Siemens
A5E00719130 SIMATIC PC,SPARE PART DVD-ROM DR,5.25" Siemens
A5E00719139 DESKTOP DVD-WRITER Siemens
A5E00749359 BASIC BOARD FOR RPC840 V2, SPARE PART Siemens
A5E00749360 BASIC BOARD FOR RPC840, SPARE PART Siemens
A5E00749366 TOUCHPAD FOR FIELD PG Siemens
A5E00753961 BATTERY BOX Siemens
A5E00755053 Panel PC Spare Part Siemens
A5E00756245 INVERTER BL 19" FOR PANEL PC 477B Siemens
A5E00758686 Panel PC Spare Part Siemens
A5E00779106 Panel PC Spare Part Siemens
A5E00808655 POWER SUPPLY,AC 115/230V,SPARE PART Siemens
A5E00818292-03 Siemens Moore Module Moore
A5E00820648 RACK PC 840 V2 NF BACKPLANE SET LOW END Siemens
A5E00824644 Panel PC Spare Part Siemens
A5E00833259 Panel PC Spare Part Siemens
A5E00837427 Panel PC Spare Part Siemens
A5E00843727 SIMATIC PC,SPARE PART,SATA HD(FLEX)CABLE Siemens
A5E00851136 Panel PC Spare Part Siemens
A5E00854357 Panel PC Spare Part Siemens
A5E00877690 Panel PC Spare Part Siemens
A5E00879628 Panel PC Spare Part Siemens
A5E00879674 Panel PC Spare Part Siemens
A5E00894928 SIMATIC PC,SPARE PART,SCREW SET Siemens
A5E00300535 Panel PC Spare Part Siemens
A5E00302640 SIMATIC PC, SPARE PART FRONT FAN 120MM Siemens
A5E00314602 Panel PC Spare Part Siemens
A5E00316219 Panel PC Spare Part Siemens
A5E00320794 Panel PC Spare Part Siemens
A5E00321317/10 QLCCM32AAN, CCMx CCMx - Critical Control Module Moore
A5E00323795 Panel PC Spare Part Siemens
A5E00333062 SIMATIC PC,SPARE PT,KEY SET RACK PC 5PCS Siemens
A5E00333467 Panel PC Spare Part Siemens
A5E00336554 PA 66 Siemans - Panel Mounting Bracket Kit Siemens
A5E00348770/03 39ACM38AAN ACMx Processor Module Moore
A5E00353154 Panel PC Spare Part Siemens
A5E00361266 PBT-GF30-FR ET200pro 2 Slot Rack Mount Siemens
A5E00365306 Panel PC Spare Part Siemens
A5E00376607 Panel PC Spare Part Siemens
A5E00394751 Panel PC Spare Part Siemens
A5E00411069 Panel PC Spare Part Siemens
A5E00414195 Panel PC Spare Part Siemens
A5E00415628 SIMATIC PC,DESKTOP DVD ROM/CD RW COMBO Siemens
A5E00423794 Panel PC Spare Part Siemens
A5E00430501 CPU COOLER LGA775 100W,SPARE PART Siemens
A5E00430573 SIMATIC PC, SPARE PART FRONT FAN 120MM Siemens
A5E00437118 Panel PC Spare Part Siemens
A5E00452314 Panel PC Spare Part Siemens
A5E00453716 SIMATIC PC, SPARE PART DVD W DRIVE Siemens
A5E00453735 SIMATIC PC, SPARE PART,DESKTOP DVD-ROM Siemens
A5E00462109A PBT-GF30 ET200pro End Connector Siemens
A5E00467784 Panel PC Spare Part Siemens
A5E00470949 Panel PC Spare Part Siemens
A5E00470970 PANEL,FRONT PC477/577 12" KEY Siemens
A5E00247448/06 QLCDM024DCBAN CDM - Critical Discrete Module Moore
A5E00248385/08 PSCDM048DCBAN CDM - Critical Discrete Module Yokogawa
A5E00248502/14 39SAMCAN SAM - APACS+ Standard Analog Module Moore
A5E00248504/11 QLSAMBAN SAM - Standard Analog Module Siemens
A5E00253134 Panel PC Spare Part Siemens
A5E00253136 Panel PC Spare Part Siemens
A5E00263180 SIMATIC PC,SPAREPART,MOTHERBOARD W/PROFI Siemens
A5E00263182 BASIC BOARD,W/ PROFIBUS,RACK PC 840 V2 Siemens
A5E00264395 Siemens Moore Module Moore
A5E00265144 SIMATIC PC,SPARE PART,DISPLAY MODULE Siemens
A5E00281117/09 16114-171 MODULERAC Module Card Rack Siemens
A5E00281129 39PSR4ANDN Power Supply Rack Moore
A5E00281989/04 39IDM115ACCBN IDM - Input Discrete Module Moore
A5E00282001/08 39ACM24BEN ACM+ Advanced Control Module Moore
A5E00282001/09 39ACM24BEN ACM+ Advanced Control Module Moore
A5E00282005/07 39ACM28AEN ACM+ Advanced Control Module Siemens
A5E00282005/09 39ACM28AEN ACM+ Advanced Control Module Moore
A5E00282025/04 39EAMCBN EAM - Enhanced Analog Module Moore
A5E00282025/06 39EAMCBN EAM - Enhanced Analog Module Siemens
A5E00282042/06 QLCCM22AAN CCM+ Critical Control Module Plus Moore
A5E00282046 QLCCM24AAN CCM+ Critical Control Module Plus Moore
A5E00282046/06 QLCCM24AAN CCM+ Critical Control Module Plus Moore
A5E00282080/04 39PFMAAN PFM - Profibus Fieldbus Module Moore
A5E00282175/07 39VIMCCN VIM - Voltage Input Module Moore
A5E00282212/18 39MBXNAN MBX - Modulbus Expander Moore
A5E00285896 SIMATIC PC,SPARE PART FAN SET,RPC 840 V2 Siemens
A5E00292714 MicromasterStarter6SL3072-0AA00-0AG0(Z5) Siemens
A5E00294719 Panel PC Spare Part Siemens
A5E00294876 PBT-GF30-FR ET200pro 1 Slot Rack Mount Siemens
A5E00299286 Panel PC Spare Part Siemens
A5E00082198 SIMATIC PC,SPARE PT 7 PCI/5 ISA T-PLANE Siemens
A5E00086045 COMPUTER SERIAL PORT ADAPTERS G/C Siemens
A5E00098837 Telperm Module Siemens
A5E00104867 Modular Power Supply Siemens
A5E00105839 Siemens Moore Module Siemens
A5E00117467 CABLE,SPARE PART ULTRA ATA,RPC IL 43 Siemens
A5E00137292 SIMATIC PC,SPARE PT,REMOVABLE FRAME EIDE Siemens
A5E00141350 SIMATIC PC, REPAIR SET CABLE RACK PC 840 Siemens
A5E00141355 SIMATIC PC,REPAIR SET MECHANICS RK PC840 Siemens
A5E00143293 SIMATIC PC, SPARE PART SET FILTER MAT Siemens
A5E00143294 SIMATIC PC, SPARE PART SET FAN SET Siemens
A5E00151017 Network Terminator For RS485 Siemens
A5E00162457 SIMATIC PC, SPARE PART LPT CABLE Siemens
A5E00163856KS04 Siemens Module Siemens
A5E00163857KS04 Siemens Module Siemens
A5E00166133 RUBBER FOOT SET, SIMATIC PG Siemens
A5E00187052 OPERATING SYSTEM FOR PC 670 Siemens
A5E00196178 3.5"/EIDE/60GB Siemens
A5E00200622 3.5"/SCSI/36GB,SIMATIC PC, SPARE PART Siemens
A5E00207992 OPERATING SYSTEM FOR PC 670 Siemens
A5E00212493-2 Siemens Moore Module Moore
A5E00214353 Siemans - Panel Mounting Bracket Kit Siemens
A5E00227986 Panelsystem Touch 15" TFT Siemens
A5E00234227 CPU COOLER COMPLETE,SPARE PART Siemens
A5E00239248/13 39SDM024DCCBN Standard Discrete Module Moore
A5E00239359/06 QLSDM024DCCBN SDM - Standard Discrete Module Siemens
A5E00239361/04 QLCAMAAN QUADLOG CAM Module Moore
A5E00239956 Panel PC Spare Part Siemens
A5E00244179 .PC840 V2 POWER SUPPLY Siemens
A5E00247442 QLCAIAAN CAI - Critical Analog Input Module Moore
