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heyx866
Heyx
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樓主  發(fā)表于: 2016-11-12 15:39
一臺E740系列的7.5KW變頻器，采用外部電壓控制，電壓信號0-10V加在2和5腳，Pr79參數設置為2，選擇開(kāi)關(guān)打在V端，但是啟動(dòng)后變頻器輸出頻率不能按控制電壓線(xiàn)性變化。電壓從0V到大約4V時(shí)，輸出頻率是50Hz不變化；從4-6時(shí)，輸出頻率從50-66.66Hz變化；電壓從6-10V時(shí)，輸出頻率是66.66Hz不變化。請版主和熟悉的朋友告訴一下原因在哪里？非常感謝！

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