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machao2300
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樓主  發(fā)表于: 2015-12-11 10:58
請問(wèn)一下各位一下電機帶負載直接啟動(dòng)可以轉動(dòng)  變頻啟動(dòng)不了是什么原因? 謝謝。!
金海洋
工控人家園,工控一家人
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1樓  發(fā)表于: 2015-12-11 15:15
用萬(wàn)用表測量一下變頻器輸出,如果有電壓輸出,電機不轉,那末就是啟動(dòng)力矩不夠大,電機帶負載啟動(dòng)不起來(lái),把變頻器的啟動(dòng)方式更改一下,不知道你什么牌子的變頻器,更改為力矩提升啟動(dòng),啟動(dòng)電流改為120%以上,一般150%,這樣就能夠啟動(dòng)起來(lái)了,我用過(guò)很多都是這樣的,直接啟動(dòng)沒(méi)問(wèn)題,變頻器啟動(dòng)堵轉了,頻率低啟動(dòng)電流達到設定保護值后不動(dòng),堵轉了。

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