大連控制柜、變頻控制箱和大連PLC變頻控制柜出現在市場(chang)中(zhong)引起銷售熱潮，其功(gong)能全面(mian)(mian)特點是起到(dao)很(hen)大(da)作(zuo)用，不同(tong)(tong)功(gong)能迎合到(dao)市場(chang)不同(tong)(tong)用戶群(qun)體，迅速(su)占據到(dao)各大(da)市場(chang)空(kong)間。以(yi)下就(jiu)來(lai)為大(da)家全面(mian)(mian)介(jie)紹(shao)PLC變頻控制柜功(gong)能信息(xi)內容(rong)： 

1、電(dian)源切換與保護(hu)功能(neng)，PLC變(bian)頻控制(zhi)柜(ju)通常設計有短路(lu)器元(yuan)件，連接著進(jin)線電(dian)源，可以幫助變(bian)頻設備完成電(dian)路(lu)通斷控制(zhi)，并能(neng)夠在電(dian)路(lu)和變(bian)頻器出現短路(lu)或(huo)是運行(xing)過(guo)載(zai)時給(gei)予保護(hu)，解決設備在運行(xing)中會發生(sheng)電(dian)力(li)輸送安全問題(ti)，對操控人員人身安全起到保護(hu)。 

2、變(bian)頻調速功能(neng)，PLC變(bian)頻控(kong)制柜面板上設(she)(she)有(you)變(bian)頻調速用(yong)電(dian)(dian)位器，可以(yi)(yi)根(gen)據操作人員輸送頻率(lv)，向(xiang)電(dian)(dian)機輸送指(zhi)令信號(hao)，控(kong)制電(dian)(dian)機運(yun)行速度，并且在(zai)部(bu)分產(chan)品設(she)(she)有(you)工頻切(qie)換功能(neng)，以(yi)(yi)確保變(bian)頻器出現故(gu)(gu)障時，可以(yi)(yi)通過裝置實現最低故(gu)(gu)障發生，減少設(she)(she)備出現損壞次數。 

國家(jia)發改(gai)委啟動的十大重點節(jie)能(neng)工(gong)程之一就是電(dian)機(ji)系統(tong)(tong)節(jie)能(neng)，并要(yao)求(qiu)：推(tui)廣變頻調速(su)節(jie)能(neng)技術，風機(ji)、水泵、壓縮機(ji)等通用機(ji)械系統(tong)(tong)采用變頻調速(su)節(jie)能(neng)措施，工(gong)業機(ji)械采用交流電(dian)動機(ji)變頻調速(su)技術；制定相關經濟激勵政策、完(wan)善(shan)電(dian)機(ji)能(neng)效(xiao)標準(zhun)體系等配套措施；“十一五”期間(jian)，實現電(dian)機(ji)系統(tong)(tong)運行效(xiao)率提(ti)高2個百分點，形成年節(jie)電(dian)能(neng)力(li)200億(yi)千瓦時(shi)。 

為推動全(quan)社會展開節(jie)能(neng)(neng)降耗(hao)，緩解(jie)能(neng)(neng)源瓶(ping)頸的制約，建(jian)設節(jie)能(neng)(neng)型社會，國家(jia)發改(gai)委制定了(le)《節(jie)能(neng)(neng)中長期專項規劃(hua)》，并在(zai)2004年11月25日向全(quan)社會發布。該(gai)“規劃(hua)”明(ming)確指出：能(neng)(neng)源是(shi)(shi)戰(zhan)略資源，是(shi)(shi)全(quan)面建(jian)設小康社會的重要物質(zhi)基礎，必須堅持(chi)節(jie)約優先。 

隨(sui)著(zhu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)技(ji)術和開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)行(xing)業的(de)(de)飛速發展(zhan)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)設備(bei)與人們(men)的(de)(de)工作(zuo)、生活的(de)(de)關(guan)(guan)(guan)系日益(yi)密切，而(er)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)設備(bei)都(dou)離不開(kai)(kai)(kai)(kai)可靠的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)，進(jin)(jin)入80年代(dai)(dai)計算(suan)(suan)機電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)全面(mian)實現了(le)開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)化(hua)，率先完成(cheng)計算(suan)(suan)機的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)換(huan)代(dai)(dai)，進(jin)(jin)入90年代(dai)(dai)開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)相(xiang)繼進(jin)(jin)入各種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)器設備(bei)領(ling)域(yu)，程控交(jiao)換(huan)機、通(tong)訊、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)檢(jian)測設備(bei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)、控制(zhi)(zhi)設備(bei)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)等都(dou)已廣泛地使用(yong)了(le)開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)，更促進(jin)(jin)了(le)開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)技(ji)術的(de)(de)迅速發展(zhan)。開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)是(shi)利用(yong)現代(dai)(dai)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)力(li)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)子(zi)(zi)技(ji)術，控制(zhi)(zhi)開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)晶體(ti)管開(kai)(kai)(kai)(kai)通(tong)和關(guan)(guan)(guan)斷(duan)的(de)(de)時間比率，維持穩定輸(shu)出電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓的(de)(de)一種(zhong)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)，開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)一般(ban)由脈沖(chong)寬(kuan)度調制(zhi)(zhi)（PWM）控制(zhi)(zhi)IC和MOSFET構成(cheng)。開(kai)(kai)(kai)(kai)關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)和線性電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)(yuan)相(xiang)比，二者(zhe)的(de)(de)成(cheng)本都(dou)隨(sui)著(zhu)輸(shu)出功率的(de)(de)增(zeng)(zeng)加而(er)增(zeng)(zeng)長，但二者(zhe)增(zeng)(zeng)長速率各異。