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孟祥興
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樓主  發(fā)表于: 2011-04-01 22:58
         今天修了臺設備,用的是歐姆龍CPM1A  PLC,PLC輸出指示運行正常,但是其中一個(gè)點(diǎn)所驅動(dòng)的電磁閥不動(dòng)作,測量發(fā)現其沒(méi)有電壓,知其輸出繼電器有故障,修改了輸出點(diǎn),故障排除。
   由此得出經(jīng)驗,就是我們在做設備時(shí),在PLC輸出后加裝中間繼電器是非常有好處的,也證實(shí)了我以前做法的正確性
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1樓  發(fā)表于: 2011-04-02 17:53
反過(guò)來(lái)也增加了故障的潛在。繼電品觸點(diǎn)有時(shí)候故障也很多的。

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