描述
非同步电动机的转矩是电机的磁通与转子内流过电流之间相互作用而产生的,在额定频率下,如果电压一定而只降低频率,那麽磁通就过大,磁回路饱和,严重时将烧毁电机。因此,频率与电压要成比例地改变,即改变频率的同时控制变频器输出电压,使电动机的磁通保持一定,避免弱磁和磁饱和现象的产生。这种控制方式多用於风机、泵类节能型变频器。
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
Xycom XVME-530 XVME530 Analog Output Module VME Board
Polaroid IDenticard 4-Shot ID Camera and Cutter
Primera Technology Bravo II CD/DVD Disc Publisher New
Acromag 932X AVME932X 12-bit A/D Analog I/O VME
Acromag 9475 AVME9475 Industrial Digital I/O 40 channel
AFC Cable Liquid-Tuff Conduit ?” x 100ft Non-UL
Asahi America Flow Tube V2-M1-A150F100-?E1-X1-LCDT w/ +
Brooks 5085A5A1F1AGAA MAG5000 Magnetic Flowmeter
Canon IPQ-1 Magenta Toner Cartridge Genuine (2)
Compatible HP C4096A Laser Cartridge BRAND NEW!!
Compatible HP CB435A Toner Cartridge BRAND NEW!!
Compatible HP Q6000A Black Laser Cartridge BRAND NEW!!
Compatible HP Q6003A Magenta Laser Cartridge BRAND NEW
CUNO Aqua-Pure AP205 Cold-Water Filters for AP200 (2)
Datel / Murata DVME-601 A/D Co-Processor Board
Duplex Phone Jack VOICE DATA & Wallplate Combo (25)
Elma 32VS-36313-T05J?12-P250C Type 32 Portable 5-Slot
Ericsson SVB13106 VME Telecom Networking Card
Fike Corp. P/N 10-2542 Cheetah Xi Controller Sprinker
Force SYS68K/CPU-33B/?4 VME Board CAT#: 510098
Force SYS68K/ISIO-1FP I/O Controller Dual Board 310034
Foss Semiconductor Systems Memory I/O Expansion Board
Insite IG Model 3100 Portable Dissolved Oxygen Analyzer
Ironics IV-3272 PIO Parallel Interface DMA High Speed
Ironics VMEbus 5-Slot Chassis Enclosure VME
VMIC VMIVME-1150 64-Bit Optical Couple Digital Input Bd
VMIC VMIVME-3123 16-BIT High Throughput Analog Input Bd
VMIC VMIVME-7592 Single-Slot Pentium / AMD-K6 Processor
Walchem WCT310-1N2 Cooling Tower Controller WCT Series
Xycom XVME-240 XVME240 Digital Input/ Output Module VME
Xycom XVME-530 XVME530 Analog Output Module VME Board
Polaroid IDenticard 4-Shot ID Camera and Cutter
Primera Technology Bravo II CD/DVD Disc Publisher New
Acromag 932X AVME932X 12-bit A/D Analog I/O VME
Acromag 9475 AVME9475 Industrial Digital I/O 40 channel
AFC Cable Liquid-Tuff Conduit ?” x 100ft Non-UL
Asahi America Flow Tube V2-M1-A150F100-?E1-X1-LCDT w/ +
Brooks 5085A5A1F1AGAA MAG5000 Magnetic Flowmeter
Canon IPQ-1 Magenta Toner Cartridge Genuine (2)
Compatible HP C4096A Laser Cartridge BRAND NEW!!
Compatible HP CB435A Toner Cartridge BRAND NEW!!
Compatible HP Q6000A Black Laser Cartridge BRAND NEW!!
Compatible HP Q6003A Magenta Laser Cartridge BRAND NEW
CUNO Aqua-Pure AP205 Cold-Water Filters for AP200 (2)
Datel / Murata DVME-601 A/D Co-Processor Board
Duplex Phone Jack VOICE DATA & Wallplate Combo (25)
Elma 32VS-36313-T05J?12-P250C Type 32 Portable 5-Slot