主營產(chǎn)品:Schneider ,Foxboro,Ovatin,Allen-Bradley,Siemens等各類工控產(chǎn)品,
歡迎來電咨詢!
公司名稱:宇創(chuàng)自動化設(shè)備(福建)有限公司
聯(lián)系人:張致遠(yuǎn)
手機(jī):18059831031
電話:0592-6533083
傳真:0592-6535181
QQ:61978772
E-mail:61978772@qq.com
我司與世界著名的多家PLC產(chǎn)品維護(hù)服務(wù)提供商建立了緊密的合作關(guān)系,北美、歐洲、亞洲您多能看到我們的身影。我們售出的DSC PLC模塊 備件提供一年的質(zhì)量保證,并且都經(jīng)過了嚴(yán)格的測試和認(rèn)證。
產(chǎn)品優(yōu)點(diǎn):使用安全PLC 及安全網(wǎng)絡(luò)的優(yōu)點(diǎn)包括:
1 機(jī)械控制更大的集成性和靈活性
2 當(dāng)標(biāo)準(zhǔn)控制層智能化時,能夠進(jìn)行更容易的故障診斷
3 更快、更方便的維護(hù)
4 減少安裝、調(diào)試以及重新配置的費(fèi)用
5 與對于邏輯單獨(dú)使用安全繼電器相比,降低了設(shè)計和硬件成本
6 提高復(fù)雜系統(tǒng)生產(chǎn)性能的潛在能力通信
德國(SIEMENS)公司生產(chǎn)的可編程序控制器在我國的應(yīng)用也相當(dāng)廣泛,在冶金、化工、印刷生產(chǎn)線等領(lǐng)域都有應(yīng)用。(SIEMENS)公司的PLc產(chǎn)品包括LOGO,s7200,s7300,s7400,工業(yè)網(wǎng)絡(luò),Hil人機(jī)界面,工業(yè)軟件等。
S7系列PLC體積小、速度快、標(biāo)準(zhǔn)化,具有網(wǎng)絡(luò)通信能力,功能更強(qiáng),可靠性更高。s7系列PLc產(chǎn)品可分為微型PLc(如s7200)
小規(guī)模rl生能要求的PLc(如s7300)和中、高性能要求的PLc(如s7400)等。
SIMATIC S7-200 PLC
s7200 PLc是超小型化的PLc,它適用于各行各業(yè),各種場合中的自動檢測、監(jiān)測及控制等。s7200 PLc的強(qiáng)大功能使其無論單機(jī)運(yùn)行,或連成網(wǎng)絡(luò)都能實(shí)現(xiàn)復(fù)雜的控制功能。
s7200Plc可提供4個不同的基本型號與8種CPU可供選擇使用。
s7300,模塊化微型PLc,滿足中小規(guī)模的性能要求。
SIMATIC S7400H:冗余的中央處理能力。
s7400 PLc是用于中、高檔性能范圍的可編程序控制器。s7400 PLc采用模塊化無風(fēng)扇的設(shè)計,可靠耐用,同時可以選用多種級別(功能逐步升級)的CPU,并配有多種通用功能的模板,這使用戶能根據(jù)需要組合成不同的專用系統(tǒng)。當(dāng)控制系統(tǒng)規(guī)模擴(kuò)大或升級時,只要適當(dāng)?shù)卦黾右恍┠0?,便能使系統(tǒng)升級和充分滿足需要。
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平波回路
在整流器整流后的直流電壓中,含有電源6倍頻率的脈動電壓,此外逆變器產(chǎn)生的脈動電流也使直流電壓變動。為了抑制電壓波動,采用電感和電容吸收脈動電壓(電流)。裝置容量小時,如果電源和主電路構(gòu)成器件有余量,可以省去電感采用簡單的平波回路。平波回路
在整流器整流后的直流電壓中,含有電源6倍頻率的脈動電壓,此外逆變器產(chǎn)生的脈動電流也使直流電壓變動。為了抑制電壓波動,采用電感和電容吸收脈動電壓(電流)。裝置容量小時,如果電源和主電路構(gòu)成器件有余量,可以省去電感采用簡單的平波回路。(1)運(yùn)算電路:將外部的速度、轉(zhuǎn)矩等指令同檢測電路的電流、電壓信號進(jìn)行比較運(yùn)算,決定逆變器的輸出電壓、頻率。
(2)電壓、電流檢測電路:與主回路電位隔離檢測電壓、電流等。
(3)驅(qū)動電路:驅(qū)動主電路器件的電路。它與控制電路隔離使主電路器件導(dǎo)通、關(guān)斷。
(4)速度檢測電路:以裝在異步電動機(jī)軸機(jī)上的速度檢測器(tg、plg等)的信號為速度信號,送入運(yùn)算回路,根據(jù)指令和運(yùn)算可使電動機(jī)按指令速度運(yùn)轉(zhuǎn)。
(5)保護(hù)電路:檢測主電路的電壓、電流等,當(dāng)發(fā)生過載或過電壓等異常時,為了防止逆變器和異步電動機(jī)損壞,使逆變器停止工作或抑制電壓、電流值。對此外界的唱衰,湖人新帥斯科特終于忍不住了,他做出了回?fù)??!爱?dāng)新賽季天,我走進(jìn)更衣室的時候,我會對我的球員們說,‘我想要贏得總冠軍’。”斯科特說道,“我不想讓球員們僅僅滿足于打進(jìn)季后賽的目標(biāo),或者是認(rèn)為我們沒有季后賽的目標(biāo)。我有更高的目標(biāo),我希望球員們同樣如此?!?/span>