大連控制柜、變頻控制箱和大連PLC變頻控制柜出(chu)現在市(shi)場中引(yin)起銷售熱潮(chao)，其(qi)功能(neng)全(quan)面(mian)特(te)點是(shi)起到(dao)很(hen)大(da)(da)作用，不同(tong)功能(neng)迎合到(dao)市(shi)場不同(tong)用戶群體，迅速占據到(dao)各大(da)(da)市(shi)場空間(jian)。以下就(jiu)來為(wei)大(da)(da)家全(quan)面(mian)介紹PLC變頻(pin)控制(zhi)柜功能(neng)信(xin)息內容： 

1、電(dian)(dian)(dian)源切(qie)換與保護(hu)(hu)功能，PLC變(bian)頻(pin)控制(zhi)柜通常設計(ji)有(you)短(duan)路(lu)器元件，連接(jie)著進線電(dian)(dian)(dian)源，可以幫(bang)助變(bian)頻(pin)設備(bei)完成電(dian)(dian)(dian)路(lu)通斷(duan)控制(zhi)，并能夠在電(dian)(dian)(dian)路(lu)和變(bian)頻(pin)器出現短(duan)路(lu)或是運(yun)行過載(zai)時(shi)給(gei)予保護(hu)(hu)，解(jie)決設備(bei)在運(yun)行中會(hui)發生電(dian)(dian)(dian)力輸送安全(quan)問題，對操控人(ren)員(yuan)人(ren)身(shen)安全(quan)起(qi)到(dao)保護(hu)(hu)。 

2、變(bian)頻(pin)(pin)(pin)調(diao)速功(gong)能(neng)，PLC變(bian)頻(pin)(pin)(pin)控制(zhi)柜(ju)面板上設有變(bian)頻(pin)(pin)(pin)調(diao)速用電(dian)位器(qi)，可以根據操作(zuo)人員輸(shu)送(song)頻(pin)(pin)(pin)率，向(xiang)電(dian)機(ji)輸(shu)送(song)指(zhi)令(ling)信號，控制(zhi)電(dian)機(ji)運行速度(du)，并且(qie)在部分產品(pin)設有工頻(pin)(pin)(pin)切換功(gong)能(neng)，以確保變(bian)頻(pin)(pin)(pin)器(qi)出現故(gu)障時，可以通過(guo)裝置實現最(zui)低(di)故(gu)障發生，減少設備出現損壞次數(shu)。 

國(guo)家發改委啟動的十(shi)大重(zhong)點節(jie)能(neng)工(gong)程之一(yi)(yi)就是(shi)電(dian)機(ji)系(xi)統節(jie)能(neng)，并要求(qiu)：推廣變(bian)頻調(diao)速節(jie)能(neng)技(ji)術，風機(ji)、水泵、壓縮機(ji)等(deng)通用機(ji)械系(xi)統采(cai)(cai)用變(bian)頻調(diao)速節(jie)能(neng)措施(shi)，工(gong)業機(ji)械采(cai)(cai)用交流電(dian)動機(ji)變(bian)頻調(diao)速技(ji)術；制定相關經濟激勵政(zheng)策、完善電(dian)機(ji)能(neng)效(xiao)(xiao)標準體系(xi)等(deng)配(pei)套措施(shi)；“十(shi)一(yi)(yi)五”期間，實現電(dian)機(ji)系(xi)統運行效(xiao)(xiao)率(lv)提高(gao)2個(ge)百分點，形成年節(jie)電(dian)能(neng)力200億千瓦時。 

為推動全(quan)社(she)會(hui)展開節能(neng)(neng)降耗，緩解能(neng)(neng)源(yuan)瓶(ping)頸的制約，建(jian)設節能(neng)(neng)型社(she)會(hui)，國家(jia)發改委制定了《節能(neng)(neng)中(zhong)長期專項規劃(hua)》，并在(zai)2004年11月25日向全(quan)社(she)會(hui)發布。該“規劃(hua)”明確(que)指出：能(neng)(neng)源(yuan)是戰略資源(yuan)，是全(quan)面建(jian)設小康社(she)會(hui)的重要物質(zhi)基(ji)礎，必須堅持節約優先。 

隨著電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)技(ji)術(shu)和開(kai)(kai)(kai)(kai)關行(xing)業的(de)(de)飛速發展，電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)設(she)(she)備(bei)與(yu)人(ren)們的(de)(de)工(gong)作、生(sheng)活(huo)的(de)(de)關系(xi)日益密切(qie)，而電(dian)(dian)(dian)(dian)(dian)子(zi)設(she)(she)備(bei)都離(li)不開(kai)(kai)(kai)(kai)可靠的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，進入80年代計算機電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)全面實現(xian)了(le)開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)化，率(lv)先完成(cheng)計算機的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)換代，進入90年代開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)相繼進入各(ge)(ge)種(zhong)電(dian)(dian)(dian)(dian)(dian)子(zi)、電(dian)(dian)(dian)(dian)(dian)器設(she)(she)備(bei)領(ling)域，程(cheng)控(kong)交(jiao)換機、通訊、電(dian)(dian)(dian)(dian)(dian)子(zi)檢測設(she)(she)備(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)、控(kong)制(zhi)設(she)(she)備(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)等(deng)都已(yi)廣泛地使(shi)用(yong)了(le)開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，更促進了(le)開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)技(ji)術(shu)的(de)(de)迅速發展。開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)是利用(yong)現(xian)代電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子(zi)技(ji)術(shu)，控(kong)制(zhi)開(kai)(kai)(kai)(kai)關晶(jing)體(ti)管(guan)開(kai)(kai)(kai)(kai)通和關斷的(de)(de)時間比率(lv)，維持穩定(ding)輸出電(dian)(dian)(dian)(dian)(dian)壓的(de)(de)一(yi)種(zhong)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)一(yi)般(ban)由(you)脈(mo)沖寬度(du)調制(zhi)（PWM）控(kong)制(zhi)IC和MOSFET構成(cheng)。開(kai)(kai)(kai)(kai)關電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)和線(xian)性電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)相比，二(er)者(zhe)的(de)(de)成(cheng)本都隨著輸出功率(lv)的(de)(de)增加而增長，但(dan)二(er)者(zhe)增長速率(lv)各(ge)(ge)異。