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(yin)起銷售(shou)熱潮，其功能(neng)全面(mian)(mian)特點是起到(dao)(dao)很大(da)作用，不同(tong)功能(neng)迎合(he)到(dao)(dao)市場(chang)不同(tong)用戶群體(ti)，迅(xun)速占據到(dao)(dao)各大(da)市場(chang)空間(jian)。以下就來為大(da)家全面(mian)(mian)介(jie)紹(shao)PLC變頻(pin)控(kong)制(zhi)柜功能(neng)信息(xi)內容： 

1、電源切換與保護功能(neng)，PLC變(bian)頻(pin)控制(zhi)柜(ju)通常設(she)計有短(duan)路器元件，連接著進線電源，可以幫助變(bian)頻(pin)設(she)備(bei)完成電路通斷控制(zhi)，并能(neng)夠在(zai)電路和變(bian)頻(pin)器出現短(duan)路或是運行(xing)(xing)過載時(shi)給予保護，解(jie)決設(she)備(bei)在(zai)運行(xing)(xing)中(zhong)會發生電力輸送安(an)全問題，對操控人員人身安(an)全起到(dao)保護。 

2、變(bian)頻調速(su)功能，PLC變(bian)頻控(kong)制柜面板上設有變(bian)頻調速(su)用電(dian)位器，可以根據操作人員(yuan)輸(shu)送頻率，向電(dian)機(ji)輸(shu)送指令信號，控(kong)制電(dian)機(ji)運行(xing)速(su)度，并(bing)且(qie)在部分產(chan)品設有工頻切換功能，以確保變(bian)頻器出(chu)現故障時，可以通過裝置實現最低故障發生，減少(shao)設備出(chu)現損壞次(ci)數。 

國家發改委啟(qi)動的(de)十大重點節(jie)(jie)能(neng)(neng)工(gong)程之(zhi)一就是電(dian)機(ji)(ji)系(xi)統(tong)(tong)節(jie)(jie)能(neng)(neng)，并要求：推廣變頻調(diao)速節(jie)(jie)能(neng)(neng)技術，風機(ji)(ji)、水泵、壓(ya)縮(suo)機(ji)(ji)等(deng)通用機(ji)(ji)械系(xi)統(tong)(tong)采用變頻調(diao)速節(jie)(jie)能(neng)(neng)措施，工(gong)業機(ji)(ji)械采用交(jiao)流電(dian)動機(ji)(ji)變頻調(diao)速技術；制定相關經濟激勵政(zheng)策、完善(shan)電(dian)機(ji)(ji)能(neng)(neng)效標準體(ti)系(xi)等(deng)配套(tao)措施；“十一五(wu)”期間(jian)，實現(xian)電(dian)機(ji)(ji)系(xi)統(tong)(tong)運行效率提(ti)高2個百(bai)分點，形成年節(jie)(jie)電(dian)能(neng)(neng)力(li)200億千(qian)瓦時。 

為推動(dong)全社(she)(she)會展(zhan)開節能(neng)(neng)降耗，緩解能(neng)(neng)源瓶(ping)頸的(de)制約，建設(she)節能(neng)(neng)型(xing)社(she)(she)會，國家(jia)發改(gai)委制定了(le)《節能(neng)(neng)中(zhong)長期專(zhuan)項規劃》，并在2004年11月25日向(xiang)全社(she)(she)會發布。該(gai)“規劃”明(ming)確(que)指出：能(neng)(neng)源是戰略(lve)資源，是全面建設(she)小康(kang)社(she)(she)會的(de)重(zhong)要物質基(ji)礎，必須堅(jian)持(chi)節約優(you)先。 

隨著(zhu)電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子技術和(he)(he)開(kai)(kai)關(guan)(guan)行業的(de)(de)飛速發展(zhan)，電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子設備(bei)(bei)(bei)與人們的(de)(de)工作、生活的(de)(de)關(guan)(guan)系日(ri)益密切，而(er)電(dian)(dian)(dian)(dian)子設備(bei)(bei)(bei)都離不開(kai)(kai)可靠的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)，進(jin)入(ru)80年代計(ji)算機電(dian)(dian)(dian)(dian)源(yuan)全(quan)面實現(xian)了開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)化，率(lv)先完成計(ji)算機的(de)(de)電(dian)(dian)(dian)(dian)源(yuan)換(huan)代，進(jin)入(ru)90年代開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)相繼進(jin)入(ru)各種(zhong)電(dian)(dian)(dian)(dian)子、電(dian)(dian)(dian)(dian)器設備(bei)(bei)(bei)領域，程控交換(huan)機、通(tong)訊、電(dian)(dian)(dian)(dian)子檢(jian)測設備(bei)(bei)(bei)電(dian)(dian)(dian)(dian)源(yuan)、控制設備(bei)(bei)(bei)電(dian)(dian)(dian)(dian)源(yuan)等(deng)都已廣泛地使用(yong)了開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)，更促(cu)進(jin)了開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)技術的(de)(de)迅速發展(zhan)。開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)是利用(yong)現(xian)代電(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)子技術，控制開(kai)(kai)關(guan)(guan)晶體管開(kai)(kai)通(tong)和(he)(he)關(guan)(guan)斷的(de)(de)時(shi)間比(bi)(bi)率(lv)，維持穩定輸出電(dian)(dian)(dian)(dian)壓的(de)(de)一種(zhong)電(dian)(dian)(dian)(dian)源(yuan)，開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)一般由(you)脈沖(chong)寬(kuan)度調制（PWM）控制IC和(he)(he)MOSFET構成。開(kai)(kai)關(guan)(guan)電(dian)(dian)(dian)(dian)源(yuan)和(he)(he)線性電(dian)(dian)(dian)(dian)源(yuan)相比(bi)(bi)，二(er)者的(de)(de)成本都隨著(zhu)輸出功率(lv)的(de)(de)增加而(er)增長(chang)，但二(er)者增長(chang)速率(lv)各異(yi)。