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dyysam513
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樓主  發(fā)表于: 2020-12-13 16:13
我用的是三菱5U PLC,西門(mén)子變頻器。我有一個(gè)A電機是用接觸器控制的,但是我要監控它的A相電流,我買(mǎi)了一個(gè)互感器,0-5V輸出模擬量,然后我準備配個(gè)FX5-4ad,來(lái)進(jìn)行讀取它。(5u內置模擬量已經(jīng)用了。)西門(mén)子變頻器是控制B電機。B電機不需要讀取電流,變頻器跟PLC是485通訊。
今天突然看到變頻器有個(gè)模擬量AI1和AI2的輸入點(diǎn)。那么我是不是可以把互感器0-5V的線(xiàn)直接接到變頻器上面,然后用485讀取這個(gè)模擬量的值呢?
這樣是否可行呢?這樣就可以省一個(gè)模塊了。這樣方不方便呢?
haotiezhu
河南自動(dòng)化人
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1樓  發(fā)表于: 2020-12-15 16:14
這個(gè)輸入點(diǎn)是用模擬量控制頻率和速度等的吧??

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