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樓主  發(fā)表于: 2014-04-22 22:01


液壓回路如圖所示,想使用三菱PLC模擬量輸出模塊控制比例方向閥和比例溢流閥,實(shí)現如下動(dòng)作。
(1)行程開(kāi)關(guān)SQ1被壓下,液壓缸右行至極限位置按下SQ2,比例溢流閥將壓力調至2倍額定壓力,保壓2分鐘后溢流閥將壓力調回默認值,液壓缸左行至極限位置壓下SQ1,溢流閥將壓力調至2倍額定壓力,保壓2分鐘。如此往復。
(2)設有停止按鈕,按下后比例方向閥回到中位
因為網(wǎng)上找不到控制比例閥的程序,無(wú)奈只能向各位前輩求助,希望能指點(diǎn)一下或者告知相關(guān)資料在哪里找,謝謝。
還有想問(wèn)一下是不是用SFC比梯形圖更好,用梯形圖編了一下,感覺(jué)很容易亂。

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