1768-PA3 罗克韦尔

1768-PA3  罗克韦尔

1768-PA3运料车的控制要求既有点动又有连续正反转控制功能， 用中间继电器进行状态转换后就很较易实现要求，如图3所示，网络1、网络3实现了既能点动又能连续的正转控制，网络2、网络4实现了既能点动又能连续的反转控制。

1768-PA3 

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