大連控制柜、變頻控制箱和大連PLC變頻控制柜出現在(zai)市(shi)(shi)場(chang)(chang)中引(yin)起(qi)銷售熱潮，其功能(neng)(neng)全(quan)面(mian)特(te)點是起(qi)到(dao)很大作用，不(bu)同功能(neng)(neng)迎合到(dao)市(shi)(shi)場(chang)(chang)不(bu)同用戶群(qun)體，迅速占(zhan)據到(dao)各大市(shi)(shi)場(chang)(chang)空間。以(yi)下就來(lai)為大家(jia)全(quan)面(mian)介(jie)紹(shao)PLC變頻控(kong)制(zhi)柜功能(neng)(neng)信息內容： 

1、電源切換與保護功能，PLC變(bian)頻(pin)控制(zhi)柜(ju)通常(chang)設計(ji)有短(duan)路器(qi)(qi)元件(jian)，連接著進線(xian)電源，可(ke)以幫助變(bian)頻(pin)設備(bei)完成電路通斷控制(zhi)，并能夠在電路和(he)變(bian)頻(pin)器(qi)(qi)出現(xian)短(duan)路或是(shi)運行(xing)過載時給予保護，解(jie)決設備(bei)在運行(xing)中會發生電力輸(shu)送安(an)全問(wen)題，對操控人員人身安(an)全起到保護。 

2、變(bian)頻(pin)調速(su)功能，PLC變(bian)頻(pin)控(kong)制柜面板上設有(you)變(bian)頻(pin)調速(su)用電(dian)位(wei)器(qi)，可以(yi)根據(ju)操作人(ren)員輸(shu)送(song)頻(pin)率，向電(dian)機(ji)輸(shu)送(song)指令信(xin)號，控(kong)制電(dian)機(ji)運(yun)行速(su)度，并且在(zai)部分產品設有(you)工頻(pin)切換功能，以(yi)確保變(bian)頻(pin)器(qi)出現故(gu)障時(shi)，可以(yi)通過裝(zhuang)置實(shi)現最(zui)低故(gu)障發生，減少設備(bei)出現損壞次數(shu)。 

國家發改委啟動的十(shi)大重(zhong)點(dian)節(jie)能工程之一(yi)就是電(dian)(dian)(dian)機(ji)(ji)系(xi)統(tong)節(jie)能，并要求：推廣變頻調速(su)節(jie)能技(ji)術(shu)，風機(ji)(ji)、水泵、壓(ya)縮機(ji)(ji)等(deng)通用機(ji)(ji)械(xie)系(xi)統(tong)采用變頻調速(su)節(jie)能措(cuo)施(shi)，工業機(ji)(ji)械(xie)采用交(jiao)流電(dian)(dian)(dian)動機(ji)(ji)變頻調速(su)技(ji)術(shu)；制(zhi)定(ding)相關經濟激勵政策、完(wan)善電(dian)(dian)(dian)機(ji)(ji)能效標準體系(xi)等(deng)配(pei)套措(cuo)施(shi)；“十(shi)一(yi)五”期(qi)間，實現電(dian)(dian)(dian)機(ji)(ji)系(xi)統(tong)運行效率提高2個百分點(dian)，形成(cheng)年節(jie)電(dian)(dian)(dian)能力(li)200億(yi)千(qian)瓦(wa)時(shi)。 

為推動全社(she)會展開節能降耗，緩解(jie)能源瓶頸(jing)的制(zhi)(zhi)約(yue)，建(jian)設節能型(xing)社(she)會，國家發改委(wei)制(zhi)(zhi)定了《節能中(zhong)長(chang)期專項(xiang)規(gui)劃》，并在2004年(nian)11月(yue)25日(ri)向全社(she)會發布(bu)。該(gai)“規(gui)劃”明(ming)確(que)指出：能源是(shi)戰略(lve)資源，是(shi)全面建(jian)設小康社(she)會的重(zhong)要物質基礎，必(bi)須堅持(chi)節約(yue)優先。 

隨著(zhu)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)技(ji)術和開(kai)關(guan)(guan)(guan)(guan)行業的(de)(de)飛速發(fa)展，電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)設(she)備與人們的(de)(de)工作、生活的(de)(de)關(guan)(guan)(guan)(guan)系日(ri)益(yi)密(mi)切，而(er)電(dian)(dian)(dian)(dian)子(zi)設(she)備都(dou)離不開(kai)可靠的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，進(jin)入80年代(dai)(dai)計(ji)算機電(dian)(dian)(dian)(dian)源(yuan)(yuan)全(quan)面實現了開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)化，率(lv)(lv)先完成(cheng)(cheng)計(ji)算機的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)(yuan)換代(dai)(dai)，進(jin)入90年代(dai)(dai)開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)相(xiang)繼進(jin)入各種(zhong)電(dian)(dian)(dian)(dian)子(zi)、電(dian)(dian)(dian)(dian)器設(she)備領域(yu)，程(cheng)控交換機、通訊、電(dian)(dian)(dian)(dian)子(zi)檢(jian)測設(she)備電(dian)(dian)(dian)(dian)源(yuan)(yuan)、控制(zhi)(zhi)設(she)備電(dian)(dian)(dian)(dian)源(yuan)(yuan)等都(dou)已廣泛地(di)使用了開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，更促進(jin)了開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)技(ji)術的(de)(de)迅速發(fa)展。開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)是利用現代(dai)(dai)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子(zi)技(ji)術，控制(zhi)(zhi)開(kai)關(guan)(guan)(guan)(guan)晶體管開(kai)通和關(guan)(guan)(guan)(guan)斷的(de)(de)時間(jian)比(bi)率(lv)(lv)，維(wei)持穩定輸(shu)出(chu)電(dian)(dian)(dian)(dian)壓的(de)(de)一種(zhong)電(dian)(dian)(dian)(dian)源(yuan)(yuan)，開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)一般由脈沖寬度調(diao)制(zhi)(zhi)（PWM）控制(zhi)(zhi)IC和MOSFET構成(cheng)(cheng)。開(kai)關(guan)(guan)(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)(yuan)和線性電(dian)(dian)(dian)(dian)源(yuan)(yuan)相(xiang)比(bi)，二(er)者的(de)(de)成(cheng)(cheng)本(ben)都(dou)隨著(zhu)輸(shu)出(chu)功率(lv)(lv)的(de)(de)增加而(er)增長，但二(er)者增長速率(lv)(lv)各異。