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wangyd
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樓主  發(fā)表于: 2011-03-20 22:15
      我們公司用1個(gè)AMT溫控儀模擬量并聯(lián)輸出控制同一個(gè)系統內的3臺ABB變頻器驅動(dòng)3臺冷卻風(fēng)機，溫差在0.5度以?xún)�。該系統的控制方式是否可行，若改裝系統，只增加溫控儀對該系統的控制穩定性有影響嗎？
jiaanreneng
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1樓  發(fā)表于: 2011-04-02 10:04
如果需要用一個(gè)溫控器控制3臺，必須串聯(lián)才行，4～20mA的模擬量輸出，溫度誤差0.5，最好用三只溫控器分別控制3臺變頻器；但是本人覺(jué)得0.5的誤差，應該在風(fēng)機的出口裝一個(gè)線(xiàn)性比例蝶閥，通過(guò)溫控器控制比例蝶閥的開(kāi)度控溫，最理想。

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