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ljbluo
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樓主  發(fā)表于: 2014-07-24 22:16
歐姆龍cj1m cpu12 串口通信模塊scu41 v1，RS422 通信，半雙工。有兩套PLC分別帶4臺和8臺安川v1000變頻器。安川變頻器共直流母排。外部端子啟停，通訊給頻率。
運行時(shí)臺變頻器無(wú)規律報cof cpf21 cpf23故障，開(kāi)始還可以用復位鍵復位故障，幾次后只能通過(guò)斷電復位了。兩套都是同樣問(wèn)題。
現在我們把其中一套帶8臺變頻器的PLC通訊線(xiàn)摘除，改為面板給定頻率，外部端子控制啟停，現已不會(huì )報上述故障代碼。領(lǐng)導想恢復PLC給頻率。求大俠指點(diǎn)迷津�。�！

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