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nzm800
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樓主  發(fā)表于: 2022-07-20 10:30
設備有幾臺變頻器，近接感應器信號線(xiàn)和變頻器輸出線(xiàn)都沒(méi)有用屏蔽線(xiàn)，都放在同一金屬線(xiàn)槽內，線(xiàn)距估計10米左右，變頻器工作的時(shí)候PLC的輸入X燈會(huì )微亮，程序會(huì )出錯。后來(lái)改近接感應器信號線(xiàn)用的多芯屏蔽線(xiàn)，變頻器沒(méi)用屏蔽線(xiàn)，X燈暫時(shí)沒(méi)發(fā)現會(huì )微亮了，屏蔽線(xiàn)兩端的外金屬網(wǎng)沒(méi)有接地。問(wèn)一下大家類(lèi)似這種需不需要接地。
qiaoshougang
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1樓  發(fā)表于: 2022-07-20 10:34
變頻器干擾很討厭的，你可以試試屏蔽線(xiàn)單端接地
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