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longfei1982
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樓主  發(fā)表于: 2013-10-12 16:14
我廠(chǎng)現在有臺設備要該造下電路，就是一臺電機之前是變頻器的調速旋鈕調速，現在就是旋鈕旋好速度后到限位老是停的不穩，現在想在限位前面加個(gè)二段速接近開(kāi)關(guān)，要求是主頻速度電位計調速，二段速設定速度運行，可以嗎？

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