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aidi256
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樓主  發(fā)表于: 2013-06-16 11:19
問(wèn)題1:同一配電柜內有的接觸器吸不。ń有‰姍C),有的接觸器能吸。ń哟箅姍C),接觸器吸的時(shí)候量了一下電壓,接小電機的接觸器線(xiàn)圈電壓低,接大電機的接觸器線(xiàn)圈電壓正常,為什么會(huì )出現這種情況?不接電機時(shí)吸合的挺好,一接電機就有毛病。
問(wèn)題2:接觸器上口電壓380,吸合的時(shí)候吸不住,用螺絲刀頂著(zhù)吸合后(手動(dòng)吸合)接觸器下口電壓260左右,發(fā)生這種情況的原因?
[ 此帖被aidi256在2013-06-17 17:51重新編輯 ]
qlin
學(xué)過(guò)一點(diǎn)FX型PLC基本知識
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1樓  發(fā)表于: 2013-06-18 23:52
如果是主線(xiàn)路壓降問(wèn)題,則接大電機時(shí)的壓降應當更大;
還是可以檢查一下控制線(xiàn)路,以及小電機主電源線(xiàn)徑是否足夠等。
另外,看三相電壓是否一致,大電機與小電機控制電源是否相同。
僅很早前用過(guò)幾次順控編程(PLC),嘿嘿,沒(méi)尋找機會(huì )

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