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)(chang)中引(yin)起銷售(shou)熱潮，其功能全(quan)(quan)面特(te)點是起到很大(da)(da)作(zuo)用，不(bu)同功能迎(ying)合到市場(chang)(chang)不(bu)同用戶(hu)群體，迅速占據到各(ge)大(da)(da)市場(chang)(chang)空間。以下就來為大(da)(da)家全(quan)(quan)面介紹(shao)PLC變頻(pin)控(kong)制(zhi)柜功能信(xin)息(xi)內容(rong)： 

1、電(dian)源(yuan)切換與(yu)保(bao)護(hu)功能(neng)，PLC變頻(pin)控制柜通(tong)常(chang)設(she)(she)計有短路(lu)器元件，連接著(zhu)進線電(dian)源(yuan)，可以幫(bang)助變頻(pin)設(she)(she)備完成電(dian)路(lu)通(tong)斷控制，并(bing)能(neng)夠在電(dian)路(lu)和變頻(pin)器出(chu)現短路(lu)或是運(yun)行過載時(shi)給予保(bao)護(hu)，解決設(she)(she)備在運(yun)行中會發(fa)生電(dian)力輸送安全問題(ti)，對操控人(ren)員(yuan)人(ren)身安全起到保(bao)護(hu)。 

2、變(bian)頻(pin)調速功能，PLC變(bian)頻(pin)控制柜面板上設有(you)變(bian)頻(pin)調速用電位器，可(ke)(ke)以(yi)(yi)根據操作人員(yuan)輸送(song)頻(pin)率，向(xiang)電機(ji)輸送(song)指令(ling)信號，控制電機(ji)運行(xing)速度，并且(qie)在部分產(chan)品設有(you)工頻(pin)切(qie)換功能，以(yi)(yi)確保變(bian)頻(pin)器出(chu)現(xian)故(gu)障時(shi)，可(ke)(ke)以(yi)(yi)通過裝(zhuang)置實現(xian)最低故(gu)障發生，減少設備出(chu)現(xian)損壞次數。 

國家發改委啟(qi)動的(de)十大重(zhong)點節(jie)能工(gong)程之一(yi)就是(shi)電(dian)(dian)機系統(tong)(tong)節(jie)能，并要求(qiu)：推廣變頻(pin)調速(su)(su)節(jie)能技(ji)術，風機、水泵、壓(ya)縮(suo)機等通用機械系統(tong)(tong)采用變頻(pin)調速(su)(su)節(jie)能措施，工(gong)業(ye)機械采用交流電(dian)(dian)動機變頻(pin)調速(su)(su)技(ji)術；制定相(xiang)關經濟激勵政(zheng)策、完善電(dian)(dian)機能效(xiao)標準體(ti)系等配(pei)套(tao)措施；“十一(yi)五(wu)”期(qi)間，實現電(dian)(dian)機系統(tong)(tong)運行(xing)效(xiao)率(lv)提高2個百分點，形成年節(jie)電(dian)(dian)能力200億千瓦(wa)時。 

為推動全社會(hui)展開節(jie)能(neng)(neng)降耗(hao)，緩解能(neng)(neng)源(yuan)瓶頸的制(zhi)約，建(jian)設(she)節(jie)能(neng)(neng)型社會(hui)，國家發改委制(zhi)定(ding)了《節(jie)能(neng)(neng)中長期專項規劃》，并在(zai)2004年11月25日向全社會(hui)發布。該“規劃”明(ming)確(que)指出：能(neng)(neng)源(yuan)是戰略資(zi)源(yuan)，是全面建(jian)設(she)小康社會(hui)的重要物質(zhi)基礎，必須堅持節(jie)約優(you)先。 

隨著電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)子(zi)(zi)技(ji)術(shu)和(he)開(kai)(kai)(kai)關(guan)行業的(de)飛速發(fa)展，電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)子(zi)(zi)設(she)備(bei)(bei)與人們的(de)工作、生活的(de)關(guan)系日益密(mi)切，而(er)電(dian)(dian)(dian)子(zi)(zi)設(she)備(bei)(bei)都(dou)離不開(kai)(kai)(kai)可靠(kao)的(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，進入(ru)80年(nian)代(dai)計算(suan)機電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)全面(mian)實現(xian)了開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)化，率(lv)先完成(cheng)計算(suan)機的(de)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)換代(dai)，進入(ru)90年(nian)代(dai)開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相繼進入(ru)各(ge)種(zhong)電(dian)(dian)(dian)子(zi)(zi)、電(dian)(dian)(dian)器設(she)備(bei)(bei)領域，程控(kong)交換機、通(tong)訊、電(dian)(dian)(dian)子(zi)(zi)檢測(ce)設(she)備(bei)(bei)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、控(kong)制設(she)備(bei)(bei)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)等都(dou)已廣泛(fan)地使用了開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，更促進了開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)技(ji)術(shu)的(de)迅速發(fa)展。開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)是(shi)利用現(xian)代(dai)電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)子(zi)(zi)技(ji)術(shu)，控(kong)制開(kai)(kai)(kai)關(guan)晶體管開(kai)(kai)(kai)通(tong)和(he)關(guan)斷的(de)時間(jian)比(bi)率(lv)，維(wei)持穩定輸出(chu)電(dian)(dian)(dian)壓的(de)一(yi)種(zhong)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)一(yi)般由脈沖寬度調制（PWM）控(kong)制IC和(he)MOSFET構成(cheng)。開(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)和(he)線性電(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相比(bi)，二者的(de)成(cheng)本都(dou)隨著輸出(chu)功率(lv)的(de)增(zeng)加而(er)增(zeng)長(chang)，但二者增(zeng)長(chang)速率(lv)各(ge)異。