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wty5588
承接各種機電安裝工程!電話(huà):18040307650
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樓主  發(fā)表于: 2010-07-17 21:27
        上節說(shuō)到PLC損壞繼電器的處理,實(shí)際上正常情況下的損壞90%都是這種情況!
    
    非正常情況的情況:1.外圍直流電路短路損壞
                     2.供電電壓意外升到380V損壞
                    3直流回路意外串入220V電壓損壞
  這幾種情況大都會(huì )導致開(kāi)關(guān)電源板損壞,少部分電腦板損壞!前者,可以買(mǎi)一個(gè)跟電腦板要求電壓一樣的開(kāi)關(guān)電源外置,用電線(xiàn)借到電腦板上,這樣,設備很快投入運轉!后者,一般是沒(méi)辦法的!如果以前有一樣壞PLC,可以電腦板互換,沒(méi)有的話(huà),只有新購了!
         還有其他情況,請看:淺談PLC維修~3
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    張文
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    1樓  發(fā)表于: 2010-07-18 21:26
    學(xué)習,學(xué)習!!!!!   

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