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軌道交通低壓開關(guān)柜、環(huán)控電控柜系統(tǒng), 由環(huán)控電控室及中間風(fēng)井配電房內(nèi)的400V環(huán)控Ⅰ、 Ⅱ級負(fù)荷進(jìn)線雙電源切換柜及饋出柜、Ⅲ級負(fù)荷單電源進(jìn)線柜及饋出柜、軟起動柜、繼電器柜(J屏)等組成.施耐德電氣自動化iMCC解決方案在上海地鐵M7環(huán)控電控 iMCC和上海地鐵 M10 環(huán)控電控iMCC中成功應(yīng)用,本文主要將施耐德電氣自動化iMCC解決方案在上海地鐵的應(yīng)用作一總結(jié)。
　　網(wǎng)絡(luò)結(jié)構(gòu)
　　綜合單元任務(wù)是將環(huán)控室內(nèi)職能裝置通過現(xiàn)場總線或工業(yè)以太網(wǎng)連接在一起。綜合單元將相關(guān)的信號上傳至上一級系統(tǒng)(EMCS),并將上一級系統(tǒng)(EMCS)的控制命令轉(zhuǎn)發(fā)給環(huán)控室內(nèi)的智能裝置，以完成整個環(huán)控室的控制和集成，它主要的硬件設(shè)備平臺-環(huán)控柜綜合管理系統(tǒng)監(jiān)控主機(jī)(PLC-B)和軟件應(yīng)用平臺組成。
　　監(jiān)控主機(jī)是各職能設(shè)備與車站綜合監(jiān)控(EMCS)之間的通訊樞紐，是實現(xiàn)綜合自動化必不可少的設(shè)備，它具有多串口，支持多網(wǎng)絡(luò)、多規(guī)約的要求，具有很好的可擴(kuò)充性和可維護(hù)性。與各個串口上所連接的智能設(shè)備及各開關(guān)量進(jìn)行通訊，同時與上一級綜合監(jiān)控系統(tǒng)進(jìn)行數(shù)據(jù)交換，實現(xiàn)遙測、遙信和遙控功能。
　　繼電器(J)屏風(fēng)門、風(fēng)閥類設(shè)備控制中使用可編程控制器模塊PLC-A, 主要負(fù)責(zé)對事故風(fēng)機(jī)組合風(fēng)閥等集中控制，提供柜與綜合監(jiān)控等系統(tǒng)接口端子。PLC-A作為PLC-B同系列的遠(yuǎn)程IO模塊，通過冗余的雙總線方式與PLC-B連接。即采用遠(yuǎn)程I/O通訊方式，現(xiàn)場執(zhí)行機(jī)構(gòu)、儀器儀表、配電系統(tǒng)等，通過遠(yuǎn)程I/ O模塊，實現(xiàn)遠(yuǎn)程控制。
　監(jiān)控主機(jī)(PLC-B)
　　綜合管理系統(tǒng)單元采用冗余配置,雙機(jī)熱備系統(tǒng)與Unity Pro 軟件相兼容，并通過Quantum CPU提供關(guān)鍵過程應(yīng)用所需要的高度可用性。
　　冗余CPU采用 140CPU67160，它采用Pentium II型芯片，主頻266MHz。 Modbus、Modbus Plus、TCP/IP、USB等多種通訊端口和內(nèi)存卡插槽，內(nèi)存卡最多可擴(kuò)展至16M。集成液晶顯示屏幕，用于顯示系統(tǒng)的運行、故障、通訊等狀態(tài)信息。支持鑰匙開關(guān)和多種口令保護(hù)，保證系統(tǒng)可靠、穩(wěn)定運行;
　　監(jiān)控主機(jī)選用了雙機(jī)熱備系統(tǒng),即兩個CPU位于兩個機(jī)架上, 實現(xiàn)CPU、電源、通訊模塊、擴(kuò)展電纜全部冗余，它們共享一套I/O?；?100 Mbps 高速光纖鏈路，用光纖連接兩個熱備控制器工作時一臺CPU為主機(jī)，另一臺為熱備機(jī)，主備CPU直接通過光纖連接,如主機(jī)發(fā)生故障或自檢失敗時可和熱備機(jī)進(jìn)行無擾切。該切換為硬件切換，非軟件切換，不需編寫額外的切換用戶程序。
　　系統(tǒng)結(jié)構(gòu)的中心部分是兩個Quantum PLC 機(jī)架，即通常意義下的“主機(jī)” 和“備機(jī)”。它們的硬件配置相同( 每個本地機(jī)架上安裝的模塊必須一致)。每個機(jī)架配置的核心部件是140 CPU 67160 處理器，專門設(shè)計用于Unity Pro 軟件下的雙機(jī)熱備架構(gòu)。該處理器是一個雙槽模塊，同時包含中央處理單元和一個冗余協(xié)處理器。
　　“主” PLC 執(zhí)行應(yīng)用程序并且控制輸入輸出(I/O)。“備” PLC駐留在后臺，必要的時候取代“主”PLC?！皞錂C(jī)”和“主機(jī)”之間通過一個集成在 CPU 當(dāng)中的高速光纖鏈路(100Mbps)相連接,以確保主備CPU之間數(shù)據(jù)備份的實時性。
　　此光纖鏈路(62.5/125 多模光纖) 可以擴(kuò)展2公里遠(yuǎn)，中間無需任何附件設(shè)備?！皞溆谩?PLC 當(dāng)中的用戶應(yīng)用程序數(shù)據(jù)正是通過此光纖鏈路被周期性地更新。
　　在“主” PLC 意外發(fā)生故障時，備用系統(tǒng)自動切換，由“備用” PLC使用最新的數(shù)據(jù)內(nèi)容執(zhí)行應(yīng)用程序并更新I/O。一旦系統(tǒng)發(fā)生切換，“備用”PLC 就將變?yōu)?“主” PLC。在發(fā)生故障的PLC 修復(fù)并重新連接到系統(tǒng)當(dāng)中時，它將承擔(dān)“備用” PLC 的角色。
　　使用Unity Pro軟件的雙機(jī)熱備系統(tǒng)能夠?qū)崿F(xiàn)主備機(jī)之間平穩(wěn)、無縫的切換。切換對于過程而言是透明的，系統(tǒng)對過程的監(jiān)控不會中斷，并且不會因為發(fā)生硬件故障而受到不利影響。使用Unity Pro 的雙機(jī)熱備系統(tǒng)因此能夠減少停機(jī)時間，從而提高生產(chǎn)效率。
　　自動化數(shù)據(jù)從運行 CPU 轉(zhuǎn)送到熱備CPU每次掃描周期的開始進(jìn)行數(shù)據(jù)交換。強(qiáng)迫置位數(shù)據(jù)傳送和 CPU 的邏輯執(zhí)行同步。傳送的時間大大減少 (協(xié)處理器到 協(xié)處理器)，無需任何特殊配置。一個掃描周期能夠完成所有數(shù)據(jù)全部交換，無需用戶配置。控制系統(tǒng)采用雙機(jī)熱備系統(tǒng)，熱備套件固化熱備切換程序，實現(xiàn)無擾切換。用戶無需編寫切換程序，熱備系統(tǒng)為硬件切換型。同時通過監(jiān)控軟件和PLC系統(tǒng)的硬件按鈕進(jìn)行手動切換。不管何種方式都能保證系統(tǒng)的無擾動切換。在冗余主備CPU不會因為一般故障發(fā)生切換，在條件下主備CPU會發(fā)生切換：主CPU故障、主CPU電源故障或關(guān)斷、主CPU背板故障、RIO遠(yuǎn)程通訊模塊出現(xiàn)故障。在其它單點故障(如主CPU測以太網(wǎng)模塊有故障)主備機(jī)不會切換，同時不會影響冗余PLC實現(xiàn)上一級系統(tǒng)EMCS的全部功能。

Siemens 6ES5451-4UA13 Digital Output Module SIMATIC with Warranty

SIEMENS 6FC5203-0AB00-0AA0 Sinumerik OP030 Free Ship

Prosoft MVI56-ADM MVI56ADM Communications Module

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SNMP Web based IP Interface Four4 Way Relay Module Board Controller

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Schneider Modicon Automation Inc DAP 216/AS-BDAP-216 DAP216ASBDAP216 Output Module

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AllenBradley1771-ODDPLC-5Isolated120VACOutputModule

Allen Bradley SLC-500 Output Mod. 16-Point 1746-OA16

ABB PCB Board YPP110A with YPK112A

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, factory sealed Siemens 6Fx1138-4BA01

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Allen-BradleyPanelView1000OperatorInterfacePanel2711-T10C8SERB

ALLEN BRADLEY X-355028 NSPP X355028

ABB DSAV-111 P/N.57350001-CN 61.2 Hz Video Board

ADI PMI OP227EY OP227EY T6223 IC chip good quality

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74LS51 IC 14 Pin Dip- Dual 2-Wide 2-IN AND/OR/Invert Gate

RELIANCE ELECTRIC 45C115 USPP 45C115

ALLEN BRADLEY 1785-LTR2 USPP 1785LTR2

ALLEN BRADLEY 150-B54NBD NSFP 150B54NBD

GIDDINGS & LEWIS 1-21762-01 USPP 12176201

TRICONEX 7400028-100 USPP 7400028100

TEKTRONIX 1240 USPP 1240

FOXBORO P0400YE USPP P0400YE

Siemens 6ES5-105-3RB31 USPP 6ES51053RB31

SIEMENS 6ES5 373-1AA61 6ES5373-1AA61 6ES53731AA61

SIEMENS 6ES5-951-7LB12 USPP 6ES59517LB12

Siemens 6ES5 756-0AA11 Slot Filler Module

Siemens 6ES5 375-0LA15 6ES5375-0LA15 Memory Card FS

Siemens LOGO! Memory Card 6ED1056-5CA00-0BA0 NIB

REMOTE I/O ADAPTER MODULE PLC 2/3/5 1771-ASB PLC-5

Texas Instruments 305-01AB

Spirent Adtech 400319 /OC48c ATM Single Mode Interface