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songsuan
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樓主  發(fā)表于: 2013-08-01 13:05
我的印刷機換了個(gè)11KW的變頻器，需要制動(dòng)，賣(mài)了制動(dòng)單元，但是制動(dòng)單元不工作，因為變頻器直流母線(xiàn)上的電壓在機器運轉時(shí)是560V，急停時(shí)還是還是560V，制動(dòng)單元工作的最低電壓是達到630V，所以沒(méi)有制動(dòng)，停車(chē)時(shí)機器是有慣性的電壓應該會(huì )升高��！不知道是什么原因？
木皮
學(xué)海無(wú)涯
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1樓  發(fā)表于: 2013-08-02 08:52
如選擇的是自由停車(chē)一關(guān)變頻器輸出就斷天了所以對電壓沒(méi)反應，如是在慣量的負載選擇減速停止且減速時(shí)間過(guò)短就會(huì )引起電壓升高但一般會(huì )報警。不知你的用意
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