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路龍遠
老師：有了您們的指教又使我在學(xué)習工控上又上了一個(gè)新的臺階！
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樓主  發(fā)表于: 2012-04-01 20:04
廠(chǎng)里一臺37kw變頻，最近出現欠電壓而保護停機，查輸入電壓385三相電壓正常，負載電流為恒流40A，如果說(shuō)是輸入電壓?jiǎn)?wèn)題可同一電柜另三臺（一臺30Kw，一臺7.5Kw，另一臺5.5Kw)又沒(méi)有出現故障，為了不花錢(qián)維修，決定和另一臺30Kw的互換主板和控制板，互換后設定參數開(kāi)機有一星期還沒(méi)有出現故障。請教這是什么原因？
huhu
退出江湖多年、現在又現身江湖，望各位高人指點(diǎn)…
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1樓  發(fā)表于: 2012-04-07 13:54
除變頻器本身的問(wèn)題，還要檢查負載的問(wèn)題…我也碰到過(guò)一次結果是負載的原故…

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