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樓主  發(fā)表于: 2024-11-12 17:07
本人現在手頭上有個(gè)項目，就是對80臺三菱變頻頻率讀寫(xiě)的問(wèn)題，因生產(chǎn)過(guò)程中常批量性按相應順序調節頻率，在調試初期一切正常，后來(lái)試機時(shí)，當變頻帶電機運行起來(lái)時(shí)，通訊就斷續時(shí)有時(shí)無(wú)，后來(lái)找三菱售后檢測后說(shuō)是干擾所致；后來(lái)加了終端電阻，接地，加裝一批485集線(xiàn)器，信號隔離放大器，重新?lián)Q屏蔽雙絞線(xiàn)等等措施，問(wèn)題依舊是只要變頻不運行，變頻器通訊正常，每次讀寫(xiě)頻率正常，反之則時(shí)有時(shí)無(wú)，請教各位看這還有什么辦法？
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1樓  發(fā)表于: 2024-11-13 14:08
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