XYCOM PM9450
XYCOM PM9450又叫轉矩補償，是為補償因電動機定子繞組電阻所引起的低速時轉矩降低，而把低頻率範圍f/V增大的方法。 設定為自動時，可使加速時的電壓自動提升以補償起動轉矩，使電動機加速順利進行。 如採用手動補償時，根據負載特性，尤其是負載的起動特性，通過試驗可選出較佳曲線。 對於變轉矩負載，如選擇不當會出現低速時的輸出電壓過高，而浪費電能的現象，甚至還會出現電動機帶負載起動時電流大，而轉速上不去的現象。
電子熱過載保護
本功能為保護電動機過熱而設置，它是變頻器內CPU根據運轉電流值和頻率計算出電動機的溫升，從而進行過熱保護。 本功能只適用於“一拖一 ”場合，而在“一拖多”時，則應在各臺電動機上加裝熱繼電器。 電子熱保護設定值(%)=[電動機額定電流(A)/變頻器額定輸出電流(A)]×100%。
XYCOM PM9450
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