VE5008艾默生

VE5008艾默生

廈門莫格電氣自動化有限公司

主營產(chǎn)品，優(yōu)勢供應(yīng)，充足庫存：

各品牌DCS、PLC備件

l Invensys Foxboro（福克斯波羅）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場輸入/輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)據(jù)通信及處理等。

l Invensys Triconex: 冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。

l Bently Nevada（本特利）：3500/3300系統(tǒng)

l Westinghouse（西屋）： OVATION系統(tǒng)、WDPF系統(tǒng)、WEStation系統(tǒng)備件。

l Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。

l Schneider Modicon（施耐德*康）：Quantum 140系列處理器、控制卡、電源模塊等。

l ABB：工業(yè)機(jī)器人備件DSQC系列、Bailey INFI 90等。

l Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

l Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

l XYCOM：I/O 、VME板和處理器等。

l GE FANUC(GE發(fā)那科)：模塊、卡件、驅(qū)動器等各類備件。

l Yaskawa（安川）：伺服控制器、伺服馬達(dá)、伺服驅(qū)動器。

l Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅(qū)動模塊等。

l Woodward（伍德沃德）：SPC閥位控制器、PEAK150數(shù)字控制器。

VE5008艾默生

 A-B(艾倫-布拉德利Allen-Bradley)是Rockwell自動化公司的。羅克韋爾自動化是一家工業(yè)自動化跨國公司，為制造業(yè)提供*的動力、控制和信息技術(shù)解決方案。羅克韋爾自動化公司整合了工業(yè)自動化領(lǐng)域的，致力于打造*自動化解決方案，幫助客戶提高生產(chǎn)力。這些品牌包括艾倫–布拉德利Allen-Bradley的控制產(chǎn)品和工程服務(wù)、道奇品牌Dodge的機(jī)械動力傳輸產(chǎn)品、瑞恩電氣Reliance Electric制造的電機(jī)和驅(qū)動產(chǎn)品以及羅克韋爾軟件Rockwell Software生產(chǎn)的工控軟件。

某廠3臺40m3/h噴油式螺桿空氣壓縮機(jī)負(fù)擔(dān)全廠用風(fēng)負(fù)荷，具有振動小、噪音低、效率高的優(yōu)點(diǎn)，由于其傳統(tǒng)的電氣線路老化，為了更好的發(fā)揮其性能，決定對其電氣部分進(jìn)行改造。經(jīng)過對空壓機(jī)的工作流程及控制保護(hù)部分分析，采用臺安的SG2！采用10MR-A進(jìn)行了改造，運(yùn)行一段時(shí)間很可靠，效果比較理想。
1、接線圖
2、梯形圖

程序1
程序1

程序2
程序2

3、控制原理
（1）按下啟動按鈕SB2，SG2！輸出繼電器觸點(diǎn)Q1、Q2吸合，接觸器K1、K2得電吸合，電動機(jī)進(jìn)行Y形啟動，同時(shí)排風(fēng)扇電動機(jī)的接觸器K和運(yùn)轉(zhuǎn)計(jì)時(shí)器P得電運(yùn)轉(zhuǎn)、油停止閥YV1得電吸合打開。經(jīng)過8s延時(shí)后，Q1斷開、Q3吸合，K2斷開、K3吸合，完成星形—三角形啟動切換；Q3吸合的同時(shí)Q4也吸合，瀉放閥YV2得電關(guān)閉、空重車電磁閥YV3得電打開，電動機(jī)開始帶重負(fù)荷運(yùn)轉(zhuǎn)。
（2）在運(yùn)轉(zhuǎn)中，若排氣壓力達(dá)到壓力上限，壓力開關(guān)SP動作，Q4斷開，YV2斷電打開、YV3斷電關(guān)閉，電動機(jī)進(jìn)入空負(fù)荷運(yùn)轉(zhuǎn)。如果壓力下降使SP斷開，Q4又吸合，恢復(fù)重負(fù)荷狀態(tài)。但是電動機(jī)進(jìn)入空負(fù)荷運(yùn)轉(zhuǎn)時(shí)間若超過20min就會自動停止。
（3）正常停機(jī)時(shí)，按下停機(jī)按鈕SB3，Q4斷開，YV2打開、YV3關(guān)閉，經(jīng)過15s空負(fù)荷運(yùn)轉(zhuǎn)延時(shí)后，Q2、Q3都斷開，K、P斷電停止，YV1關(guān)閉，K1、K3斷開，電動機(jī)停止。
（4）出現(xiàn)以下三種情況之一，Q2、Q3、Q4均同時(shí)斷開。電動機(jī)保護(hù)停機(jī)：1、排氣溫度超過設(shè)定值100度，溫度開關(guān)ST動作；2、排風(fēng)扇過載使其熱繼電器FT1動作或電動機(jī)過載使其熱繼電器FT2動作；3、逆相、缺相、低電壓綜合保護(hù)器APRS動作。
（5）按下緊急停機(jī)按鈕SB1，電源斷開，所有輸出繼電器全部斷開，電動機(jī)停機(jī)。

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