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</div><div>　　2、接入交流電源線，按正負接好勵磁電壓，否則會造成反轉。<br /> </div><div>　　3、在主電樞電路輸出端，+極接直流電動機主電樞正極，-極接主電樞負極。<br /> </div><div>　　4、測速反饋+極接測速發電機反饋信號正極，測速反饋-極接測速發電機反饋信號負極。<br /> </div><div>　　5、操作前先把面板上手動調節電位器旋至零位。然后送上電源電壓，然后旋轉手動調節電位器旋鈕，即可啟動電樞電機工作輸出最高200V。<br /> </div><div>　　<strong>ABB直流調速器</strong>維修處理方法：<br /> </div><div>　　拔掉主控板，改動uc3844電源芯片取樣反饋的辦法，就是甩開次級取樣，將供電反饋直接引入2足(這樣做直接有經驗確定電阻值的大小，否則可能造成次級供電過壓)，電源這時可以直接起振工作，調整電阻組織，待電源穩定到供電電壓，這時先不要插主控板上去，先看看電源驅動板，勵磁控制板個元件溫升是否正常。<br /> </div><div>　　1、主要后級元件溫升，有短路的元件溫度會迅速發熱，取下后級芯片，繼續觀察，十分鐘以后溫度正?？梢源_定元件基本正常。<br /> </div><div>　　2、驅動板溫度正常，這時可以帶上主控板，測電壓，注意主控板元件溫升。<br /> </div><div>　　3、還不起振，可以考慮初級元器件和開關變壓器是否元件有故障。</div> </div> <div class="ny_PrevNext"> <ul> <li>上一篇：<a href="/Article-3367001.html">ABB直流調速器是優化電力系統控制的關鍵</a></li> <li>下一篇：<a href="/Article-3391017.html">分享！西門子PLC的維修建議</a></li> </ul> </div> </div> </div> </div>   <div class="pc_foot"> <div class="pc_ft_main w1200 clear"> <div class="ft_list"> <ul> <li><b>關于我們</b><a href="/aboutus.html" 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