6SL3352-6TH31-5AA3

6SL3352-6TH31-5AA3

6SL3352-6TH31-5AA3

需要电机运行时，先合上主断路器、分断路器，当按下启动按钮时，控制电路回路通路，接触器电磁线圈得电吸合，接触器主触点吸合，电机接通电源开始运行。同时接触器辅助常开触点闭合，松开启动按钮后，电机继续运转。

需要电机停止运行时，按下停止按钮，控制回路开路，接触器电磁线圈失电，接触器主触点脱开，主电路开路并切断电源输入，电机停止运行。

从电机运行与停止运行过程可以看出，接触器在此过程中起到很关键的作用，即：电机运行时，接触器的主触点是闭合的。电机停转时，接触器主触点是断开的。

那么能否就此判断，按下停止按钮后电机不停止运转，就是接触器出现故障呢？不能。

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