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foxplc
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樓主  發(fā)表于: 2008-05-12 16:43
圖片：
圖片：
圖片：
問(wèn)題  (1)  原理圖中當中液位時(shí),能否實(shí)現兩臺泵,4小時(shí),輪流啟動(dòng)停止.

            (2)該圖中,還不能實(shí)現,一臺泵故障時(shí),另外一臺泵,自動(dòng)投入.(該泵是滿(mǎn)足啟動(dòng)條件的),即KA4,

                KA5的常開(kāi)觸點(diǎn)要作為啟動(dòng)條件.但是還不能影響.到正常工作時(shí)的4小時(shí)兩泵輪流起停.

 

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jox822
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1樓  發(fā)表于: 2008-05-12 19:11
我可以幫你程序設計我的QQ526889402
樓主留言：
此問(wèn)題不用PLC,純接觸器繼電器系統,你能實(shí)現嗎?

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