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)銷售熱潮，其功(gong)能全(quan)面特點(dian)是起(qi)到(dao)(dao)很大(da)作用，不同(tong)功(gong)能迎合到(dao)(dao)市場不同(tong)用戶群體，迅速占據(ju)到(dao)(dao)各大(da)市場空間(jian)。以下就來為大(da)家全(quan)面介紹PLC變(bian)頻控(kong)制柜功(gong)能信(xin)息內容： 

1、電(dian)源切換與保護功能，PLC變(bian)頻控(kong)制柜通(tong)常設(she)計(ji)有(you)短路器元件，連接著進線電(dian)源，可以幫助(zhu)變(bian)頻設(she)備(bei)完成電(dian)路通(tong)斷(duan)控(kong)制，并能夠在電(dian)路和變(bian)頻器出現短路或(huo)是運(yun)行過載時給予保護，解決(jue)設(she)備(bei)在運(yun)行中會發生電(dian)力輸送安全問題，對(dui)操控(kong)人員人身安全起到保護。 

2、變(bian)(bian)頻(pin)調速功能，PLC變(bian)(bian)頻(pin)控(kong)制柜面板上(shang)設有(you)變(bian)(bian)頻(pin)調速用電位器，可以(yi)(yi)根據操作人員輸送頻(pin)率，向電機(ji)輸送指令信號，控(kong)制電機(ji)運行速度(du)，并(bing)且在部分產品(pin)設有(you)工頻(pin)切(qie)換功能，以(yi)(yi)確保(bao)變(bian)(bian)頻(pin)器出(chu)現故障(zhang)時，可以(yi)(yi)通過裝(zhuang)置實現最(zui)低故障(zhang)發生，減少設備出(chu)現損壞次數。 

國家發改委啟動的十大重(zhong)點節(jie)能工(gong)程之一就(jiu)是(shi)電機(ji)(ji)系統(tong)節(jie)能，并要求：推廣變頻(pin)調速(su)節(jie)能技術(shu)，風機(ji)(ji)、水(shui)泵、壓縮機(ji)(ji)等通用機(ji)(ji)械(xie)系統(tong)采用變頻(pin)調速(su)節(jie)能措施，工(gong)業(ye)機(ji)(ji)械(xie)采用交流電動機(ji)(ji)變頻(pin)調速(su)技術(shu)；制定相關(guan)經(jing)濟(ji)激(ji)勵(li)政策、完(wan)善(shan)電機(ji)(ji)能效(xiao)標準(zhun)體系等配(pei)套措施；“十一五(wu)”期間，實(shi)現電機(ji)(ji)系統(tong)運行效(xiao)率提高2個百分點，形成年(nian)節(jie)電能力(li)200億(yi)千(qian)瓦時。 

為推動全社(she)會(hui)展開節能(neng)(neng)降耗，緩(huan)解能(neng)(neng)源(yuan)瓶(ping)頸的制(zhi)約(yue)，建設節能(neng)(neng)型社(she)會(hui)，國家發(fa)改委制(zhi)定了《節能(neng)(neng)中長(chang)期專(zhuan)項規劃》，并在(zai)2004年11月25日向全社(she)會(hui)發(fa)布。該“規劃”明(ming)確指(zhi)出：能(neng)(neng)源(yuan)是戰略資源(yuan)，是全面(mian)建設小康社(she)會(hui)的重要(yao)物(wu)質基礎(chu)，必須堅持(chi)節約(yue)優(you)先。 

隨(sui)著電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子技(ji)術(shu)和開關(guan)(guan)(guan)行業的飛(fei)速發展，電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子設(she)備(bei)與人們(men)的工作、生活的關(guan)(guan)(guan)系日益密(mi)切(qie)，而(er)電(dian)(dian)(dian)(dian)(dian)子設(she)備(bei)都(dou)離不(bu)開可靠的電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，進入(ru)(ru)80年代(dai)計算機(ji)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)全面實現(xian)了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)化，率(lv)(lv)先完成(cheng)計算機(ji)的電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)換代(dai)，進入(ru)(ru)90年代(dai)開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)相繼進入(ru)(ru)各(ge)種(zhong)電(dian)(dian)(dian)(dian)(dian)子、電(dian)(dian)(dian)(dian)(dian)器(qi)設(she)備(bei)領域，程(cheng)控(kong)(kong)交換機(ji)、通(tong)訊、電(dian)(dian)(dian)(dian)(dian)子檢測(ce)設(she)備(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)、控(kong)(kong)制(zhi)設(she)備(bei)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)等都(dou)已廣泛(fan)地使(shi)用(yong)了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，更促(cu)進了開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)技(ji)術(shu)的迅速發展。開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)是利用(yong)現(xian)代(dai)電(dian)(dian)(dian)(dian)(dian)力電(dian)(dian)(dian)(dian)(dian)子技(ji)術(shu)，控(kong)(kong)制(zhi)開關(guan)(guan)(guan)晶體管(guan)開通(tong)和關(guan)(guan)(guan)斷(duan)的時間(jian)比率(lv)(lv)，維持穩定輸出電(dian)(dian)(dian)(dian)(dian)壓的一(yi)種(zhong)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)，開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)一(yi)般由脈(mo)沖寬度調制(zhi)（PWM）控(kong)(kong)制(zhi)IC和MOSFET構成(cheng)。開關(guan)(guan)(guan)電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)和線性電(dian)(dian)(dian)(dian)(dian)源(yuan)(yuan)(yuan)相比，二者(zhe)的成(cheng)本都(dou)隨(sui)著輸出功(gong)率(lv)(lv)的增加而(er)增長，但二者(zhe)增長速率(lv)(lv)各(ge)異。