NDIO-02

描述

变频器的主电路大体上可分为两类:电压型是将电压源的直流变换为交流的变频器，直流回路的滤波是电容;电流型是将电流源的直流变换为交流的变频器，其直流回路滤波石电感。

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。

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