MS4800S-30-1240-30X-30R
MS4800S-30-1240-30X-30R
MS4800S-30-1240-30X-30R
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發(fā)電量限制值由用戶直接在上位機上設(shè)定。開環(huán)狀態(tài)時，發(fā)電量限制由變頻器輸入功率直接進行判斷。當變頻器輸入功率絕對值達到發(fā)電量限制值時，則將給定信號進行限制
例如：進線功率目標值=500kW；當前變電所實際進線功率=1000kW；發(fā)電功率限制值為300kW。當變頻器輸入功率達到-300kW時，進線功率目標值將自動調(diào)整至700kW。
2.4其它功能
（1）開環(huán)、閉環(huán)狀態(tài)自由平滑切換
閉環(huán)運行狀態(tài)下，如果遇到通訊故障，則自動切換到開環(huán)運行狀態(tài)，等通訊恢復后，在用戶DCS監(jiān)控界面可以直接切換至閉環(huán)狀態(tài)。正常運行情況下，用戶也可以在DCS監(jiān)控界面對控制狀態(tài)進行隨意切換。
（2）斜坡停車功能
斜坡停車狀態(tài)下，系統(tǒng)發(fā)電量將以斜坡形式緩慢降落，以防止汽輪機轉(zhuǎn)速波動。若斜坡停車期間再次按下運行按鈕，則系統(tǒng)重新開始運行。
2.5轉(zhuǎn)速啟動
轉(zhuǎn)速啟動又為：“飛車啟動”，即在電機旋轉(zhuǎn)狀態(tài)下啟動。變頻器轉(zhuǎn)速啟動存在于轉(zhuǎn)速啟動與轉(zhuǎn)矩控制啟動兩種方式中。在啟動變頻器前控制器一直檢測電機的轉(zhuǎn)速，一旦接到啟動命令，變頻器立即輸出該轉(zhuǎn)速下對應的頻率，并在此頻率基礎(chǔ)上加減轉(zhuǎn)速或者加減轉(zhuǎn)矩，直到達到給定數(shù)值。
〖廈門光沃自動化設(shè)備有限公司 竭誠為您服務〗
〖聯(lián)系人：歐先生 〗
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〖傳真：0592-5709825
【價格】如此低價,僅此一家
【貨期】大量現(xiàn)貨,下單后即可發(fā)貨
【質(zhì)量】全新原裝,進口***
【保障】產(chǎn)品經(jīng)過專業(yè)檢測，質(zhì)保一年,15天包退換
【品牌】Allen-Bradley羅克韋爾、ABB、本特利Bently 3500系統(tǒng)卡件、GE、艾默生西屋等模塊卡件
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。閉環(huán)狀態(tài)時，給定值為進線功率目標值，反饋值為實際進線功率。此時的發(fā)電功率限制值，同樣與變頻器輸入功率進行比較，變頻器輸入功率的絕對值達到發(fā)電功率限制值后，需要對進線功率目標值進行修正。
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