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thinkwy
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樓主  發(fā)表于: 2011-02-28 19:23
一臺成型機用4根加熱管（加熱管的電壓是220v的）并聯(lián)加熱，用溫控器加固態(tài)繼電器控制溫度，當某一根斷了之后，用什么低成本的方法檢測并產(chǎn)生報警？
qwerty318
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1樓  發(fā)表于: 2011-02-28 22:42
加裝一個(gè)電流繼電器，整定好電流，少了電流就報警，報警電源接在固繼后

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