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lxhwawa
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樓主  發(fā)表于: 2021-07-09 17:13
A840變頻器的AM模擬量輸出,直接連到FX5U自帶的模擬量輸入,用來(lái)檢測變頻器輸出頻率。
現在問(wèn)題是,其中一臺沒(méi)有啟動(dòng)變頻器的狀態(tài)下,AM與5號端子之間電壓為3.62V,啟動(dòng)后到最大頻率,輸出10V;另外一臺沒(méi)有啟動(dòng)變頻器的狀態(tài)下,AM與5號端子之間電壓為2.58V,第三臺正常。
初始化后,并拆掉控制線(xiàn),測量AM與5號端子之間電壓依然為3.62V。
請問(wèn)大神們,是否變頻器控制板出問(wèn)題了?
be47ca77
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1樓  發(fā)表于: 2021-07-11 21:30
有接線(xiàn)圖嗎
lxhwawa
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2樓  發(fā)表于: 2021-07-12 10:50
接線(xiàn)圖

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