大連控制柜、變頻控制箱和大連PLC變頻控制柜出現在市(shi)場(chang)中(zhong)引起銷售熱潮(chao)，其功(gong)能全面(mian)特(te)點是起到(dao)很大(da)作用，不(bu)同(tong)功(gong)能迎合到(dao)市(shi)場(chang)不(bu)同(tong)用戶群體，迅速占據(ju)到(dao)各大(da)市(shi)場(chang)空間。以下就來為大(da)家(jia)全面(mian)介紹PLC變頻控制柜(ju)功(gong)能信(xin)息(xi)內(nei)容： 

1、電(dian)源切換(huan)與保護功能，PLC變(bian)頻(pin)控制(zhi)柜通常設(she)(she)計有(you)短路(lu)器元件，連接著進線電(dian)源，可以幫助變(bian)頻(pin)設(she)(she)備完(wan)成電(dian)路(lu)通斷控制(zhi)，并能夠(gou)在(zai)電(dian)路(lu)和變(bian)頻(pin)器出現(xian)短路(lu)或(huo)是運行過(guo)載(zai)時給予保護，解決設(she)(she)備在(zai)運行中會發生電(dian)力輸送安(an)全(quan)問題，對操控人員人身安(an)全(quan)起到保護。 

2、變(bian)頻(pin)(pin)調速功能(neng)(neng)，PLC變(bian)頻(pin)(pin)控(kong)(kong)制柜面(mian)板(ban)上設(she)有變(bian)頻(pin)(pin)調速用電位器，可(ke)以根據(ju)操作人員輸送頻(pin)(pin)率，向電機輸送指(zhi)令(ling)信號(hao)，控(kong)(kong)制電機運行(xing)速度，并(bing)且(qie)在部分產品設(she)有工頻(pin)(pin)切換功能(neng)(neng)，以確保變(bian)頻(pin)(pin)器出(chu)現(xian)故障時，可(ke)以通過裝置實現(xian)最低故障發生，減少設(she)備出(chu)現(xian)損壞次數。 

國家發改委啟動的十大(da)重點節(jie)能(neng)(neng)工程之一就是電(dian)(dian)機(ji)(ji)系(xi)統(tong)節(jie)能(neng)(neng)，并要求：推廣變(bian)頻(pin)調速節(jie)能(neng)(neng)技術，風(feng)機(ji)(ji)、水(shui)泵、壓縮機(ji)(ji)等(deng)通用機(ji)(ji)械系(xi)統(tong)采(cai)用變(bian)頻(pin)調速節(jie)能(neng)(neng)措(cuo)施，工業機(ji)(ji)械采(cai)用交流電(dian)(dian)動機(ji)(ji)變(bian)頻(pin)調速技術；制定(ding)相(xiang)關經濟(ji)激勵政(zheng)策、完善電(dian)(dian)機(ji)(ji)能(neng)(neng)效標準體系(xi)等(deng)配套(tao)措(cuo)施；“十一五”期(qi)間，實現電(dian)(dian)機(ji)(ji)系(xi)統(tong)運行效率提高2個百分點，形(xing)成(cheng)年(nian)節(jie)電(dian)(dian)能(neng)(neng)力(li)200億千瓦時。 

為推動全社會(hui)(hui)展(zhan)開節(jie)(jie)能降(jiang)耗(hao)，緩解能源瓶頸的(de)制約，建設節(jie)(jie)能型社會(hui)(hui)，國家發改委制定了《節(jie)(jie)能中長期專項規劃(hua)》，并在(zai)2004年11月25日向(xiang)全社會(hui)(hui)發布。該“規劃(hua)”明確指出：能源是戰略資(zi)源，是全面建設小康(kang)社會(hui)(hui)的(de)重(zhong)要物質基(ji)礎，必須堅持節(jie)(jie)約優先。 

隨著電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)技術和開(kai)(kai)(kai)(kai)(kai)關(guan)行業的(de)(de)飛速(su)發展，電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)設(she)(she)備與(yu)人們的(de)(de)工作、生活的(de)(de)關(guan)系日(ri)益(yi)密切，而電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)設(she)(she)備都離不開(kai)(kai)(kai)(kai)(kai)可靠的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，進入80年(nian)代(dai)計(ji)算(suan)機電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)全面實(shi)現(xian)了開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)化，率(lv)先完成計(ji)算(suan)機的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)換(huan)代(dai)，進入90年(nian)代(dai)開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相繼進入各(ge)(ge)種電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)、電(dian)(dian)(dian)(dian)(dian)器設(she)(she)備領域(yu)，程控(kong)(kong)交(jiao)換(huan)機、通(tong)訊、電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)檢測設(she)(she)備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、控(kong)(kong)制(zhi)設(she)(she)備電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)等都已廣泛(fan)地(di)使用(yong)(yong)了開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，更促進了開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)技術的(de)(de)迅速(su)發展。開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)是利(li)用(yong)(yong)現(xian)代(dai)電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)(zi)技術，控(kong)(kong)制(zhi)開(kai)(kai)(kai)(kai)(kai)關(guan)晶體(ti)管開(kai)(kai)(kai)(kai)(kai)通(tong)和關(guan)斷的(de)(de)時間比率(lv)，維(wei)持穩定輸(shu)出電(dian)(dian)(dian)(dian)(dian)壓的(de)(de)一種電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)一般由脈沖寬度(du)調制(zhi)（PWM）控(kong)(kong)制(zhi)IC和MOSFET構成。開(kai)(kai)(kai)(kai)(kai)關(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)和線性電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相比，二者的(de)(de)成本都隨著輸(shu)出功率(lv)的(de)(de)增加而增長(chang)，但二者增長(chang)速(su)率(lv)各(ge)(ge)異。