大連控制柜、變頻控制箱和大連PLC變頻控制柜出現在市場中引起(qi)銷售(shou)熱(re)潮，其功能全面特點是起(qi)到(dao)(dao)很大(da)作用(yong)，不同功能迎(ying)合到(dao)(dao)市場不同用(yong)戶群體，迅速(su)占(zhan)據(ju)到(dao)(dao)各大(da)市場空間。以(yi)下就來為大(da)家全面介(jie)紹PLC變頻(pin)控制柜功能信息內容： 

1、電(dian)源(yuan)切換與保護(hu)(hu)功能(neng)，PLC變(bian)(bian)頻(pin)控(kong)制(zhi)柜通(tong)常設(she)計有(you)短路器元件，連接著進線電(dian)源(yuan)，可以幫助變(bian)(bian)頻(pin)設(she)備完成電(dian)路通(tong)斷(duan)控(kong)制(zhi)，并能(neng)夠在電(dian)路和(he)變(bian)(bian)頻(pin)器出現短路或是運行過載時(shi)給予保護(hu)(hu)，解決設(she)備在運行中會發生(sheng)電(dian)力輸送安全問題，對操(cao)控(kong)人(ren)員(yuan)人(ren)身安全起到保護(hu)(hu)。 

2、變頻(pin)調速(su)功能，PLC變頻(pin)控制柜(ju)面(mian)板上(shang)設有(you)變頻(pin)調速(su)用電(dian)位器(qi)，可以(yi)(yi)根據操作人員輸送(song)頻(pin)率(lv)，向電(dian)機(ji)輸送(song)指令信號，控制電(dian)機(ji)運(yun)行速(su)度，并(bing)且在部分產品設有(you)工(gong)頻(pin)切換功能，以(yi)(yi)確保變頻(pin)器(qi)出現故障(zhang)時，可以(yi)(yi)通(tong)過裝置實現最低故障(zhang)發生，減少(shao)設備(bei)出現損壞(huai)次(ci)數。 

國(guo)家發改委啟(qi)動的十大重點節(jie)能(neng)(neng)工(gong)程(cheng)之一就(jiu)是電(dian)(dian)機系統節(jie)能(neng)(neng)，并要求：推廣變(bian)頻調速(su)節(jie)能(neng)(neng)技術，風機、水泵(beng)、壓縮機等通用機械系統采(cai)用變(bian)頻調速(su)節(jie)能(neng)(neng)措(cuo)施(shi)，工(gong)業機械采(cai)用交流電(dian)(dian)動機變(bian)頻調速(su)技術；制定相關經濟激勵政策、完善電(dian)(dian)機能(neng)(neng)效(xiao)標準體系等配套措(cuo)施(shi)；“十一五(wu)”期間，實現電(dian)(dian)機系統運(yun)行(xing)效(xiao)率提高2個(ge)百分(fen)點，形成年節(jie)電(dian)(dian)能(neng)(neng)力(li)200億千瓦(wa)時。 

為推(tui)動全社(she)(she)會展開節(jie)(jie)能降耗(hao)，緩解能源瓶頸的制約，建(jian)設節(jie)(jie)能型社(she)(she)會，國家發(fa)改委制定了《節(jie)(jie)能中(zhong)長期(qi)專項規劃(hua)》，并(bing)在2004年11月25日向(xiang)全社(she)(she)會發(fa)布。該“規劃(hua)”明確(que)指出：能源是(shi)戰略資(zi)源，是(shi)全面建(jian)設小康(kang)社(she)(she)會的重要物質基礎，必須堅持節(jie)(jie)約優先。 

隨著(zhu)電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)子技(ji)(ji)術和(he)開關(guan)(guan)(guan)行業的(de)(de)飛速(su)發展，電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)子設(she)備(bei)(bei)(bei)(bei)與人(ren)們的(de)(de)工作、生活的(de)(de)關(guan)(guan)(guan)系日益(yi)密切，而電(dian)(dian)(dian)(dian)(dian)子設(she)備(bei)(bei)(bei)(bei)都(dou)離(li)不開可(ke)靠(kao)的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，進入(ru)80年代(dai)(dai)計(ji)(ji)算機電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)全(quan)面實(shi)現了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)化，率先完(wan)成(cheng)計(ji)(ji)算機的(de)(de)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)換代(dai)(dai)，進入(ru)90年代(dai)(dai)開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相繼進入(ru)各種電(dian)(dian)(dian)(dian)(dian)子、電(dian)(dian)(dian)(dian)(dian)器設(she)備(bei)(bei)(bei)(bei)領(ling)域，程控(kong)交(jiao)換機、通(tong)訊、電(dian)(dian)(dian)(dian)(dian)子檢測設(she)備(bei)(bei)(bei)(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)、控(kong)制設(she)備(bei)(bei)(bei)(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)等都(dou)已廣(guang)泛地使用了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，更促進了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)技(ji)(ji)術的(de)(de)迅速(su)發展。開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)是利(li)用現代(dai)(dai)電(dian)(dian)(dian)(dian)(dian)力(li)(li)電(dian)(dian)(dian)(dian)(dian)子技(ji)(ji)術，控(kong)制開關(guan)(guan)(guan)晶體管開通(tong)和(he)關(guan)(guan)(guan)斷的(de)(de)時間比率，維持穩定輸出(chu)電(dian)(dian)(dian)(dian)(dian)壓(ya)的(de)(de)一種電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)，開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)一般由脈沖寬度調制（PWM）控(kong)制IC和(he)MOSFET構成(cheng)。開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)和(he)線(xian)性電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)(yuan)相比，二者的(de)(de)成(cheng)本都(dou)隨著(zhu)輸出(chu)功率的(de)(de)增加而增長，但二者增長速(su)率各異。