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13771165220
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樓主  發(fā)表于: 2021-02-01 13:49
一直做PLC回路，直接中繼的電路做的很少，遇到這樣一個(gè)問(wèn)題。傳感器直接驅動(dòng)中繼一天上千次的頻率，老是壞傳感器，是不是不能這樣使用。
現場(chǎng)有油，暫時(shí)不能100%確認是電路問(wèn)題還是環(huán)境問(wèn)題，總感覺(jué)電路存在沖擊導致。
大家發(fā)表一下意見(jiàn)。
yyande
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1樓  發(fā)表于: 2021-02-07 20:49
看中繼的線(xiàn)圈工作電壓。一般來(lái)說(shuō)光電傳感器的NPN或PNP驅動(dòng)也就是100ma以下，換成接點(diǎn)輸出的傳感器應該會(huì )持久點(diǎn)。

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