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xueli521
生而無(wú)畏學(xué)至終章
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樓主  發(fā)表于: 2020-10-20 09:51
在控制回路中,加入了一個(gè)5V比例轉換48V的轉換板,5V電壓由PLC模擬量給定,經(jīng)測量PLC端電壓給定正常,但是48V端,在加上負載后電壓會(huì )下降一半,例如PLC輸出0.6V的時(shí)候空載情況下48V端輸出10V,但是加上負載后輸出只有5.5V,換了新負載也是一樣的,轉換板也換了幾個(gè),但是還是一樣,請問(wèn)大家會(huì )是哪方面的問(wèn)題呢?(轉換板的48V供電經(jīng)測量也一直穩定在48V)
幽默人生
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1樓  發(fā)表于: 2020-10-20 11:30
感覺(jué)是功率的問(wèn)題,量一下電流。

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