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gb026099
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樓主  發(fā)表于: 2023-05-29 09:48
圖片：
如圖所示三菱5U的漏型輸出PLC，NPN型輸出使用1K的電阻拉高電平，會(huì )出現怎么問(wèn)題嗎�，F在使用4.7k，拉高了3V電壓，但是會(huì )受到干擾，準備使用1K的電阻，又害怕燒壞PLC。
gxtmdb82164
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1樓  發(fā)表于: 2023-05-30 11:46
12V下可以使用1KΩ說(shuō)明至少有12ma的電流輸出能力,換算到24V上,能接受最小的電阻值是2KΩ,你拿兩個(gè)4.7一扭不就差不多了

另外,這個(gè)干擾是不正常的,一般都是地不干凈,可以在PLC側單獨取一個(gè)輸入的COM點(diǎn)和相機共地,別接其他東西.或者干脆把相機的電源地和PLC的地接一起,完全按他圖里的接,大概率又是一個(gè)細細細細的線(xiàn)在做地線(xiàn)

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