EPRO PR6423/00D-030 振动传感器+CON021

 EPRO PR6423/00D-030 振动传感器+CON021

EPRO PR6423/00D-030 振动传感器+CON021

学习用可编程控制器控制交流异步电动机正反转，并对电动机正反转进行接线。

二、实验器材：

1．个人电脑PC。

2．PLC程控器实验装置。

3．RS—232数据通信线。

4．继电控制装置实验板。

5．异步电动机一台。

6．导线若干。

三、实验内容说明

吊车或某些生产机械的提升机构需要作左右上下两个方向的运动，拖动它们的电动机必须能作正、反两个方向的旋转。由异步电动机的工作原理可知，要使电动机反向旋转，需对调三根电源线中的两根以改变定子电流的相序。因此实现电动机的正、反转需要两个接触器

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