IC693PWR332
IC693PWR332
IC693PWR332
隧道掘進(jìn)設(shè)備是一種存在振動的移動設(shè)備，它工作時會產(chǎn)生高溫、高濕、高塵、高電磁干擾，幾乎所有對自動控制系統(tǒng)不利的工作條件在隧道掘進(jìn)設(shè)備中都存在，許多廠商的自動化元件在隧道掘進(jìn)設(shè)備中應(yīng)用時都或多或少發(fā)生過誤動作，三菱電機(jī)的CC-Link通信網(wǎng)絡(luò)和Q系列PLC在隧道掘進(jìn)設(shè)備應(yīng)用時還沒有發(fā)現(xiàn)誤動作，最近的一次實(shí)例是用于地鐵二號線古北路站至中山公園站區(qū)間隧道施工的隧道掘進(jìn)設(shè)備。該隧道掘進(jìn)設(shè)備自動控制系統(tǒng)具有如下二個特點(diǎn)：
①PLC輸入輸出點(diǎn)數(shù)多，開關(guān)量近1000點(diǎn)、模擬量100點(diǎn)以上。
②PLC站間通信采用通信網(wǎng)絡(luò)，PLC系統(tǒng)一次設(shè)計、分步實(shí)施，主PLC、1#PLC、2#PLC、3#PLC為基本PLC，4#PLC、5#PLC、6#PLC為擴(kuò)展PLC，根據(jù)工程需要選用。
1、CC-Link通信網(wǎng)絡(luò)的結(jié)構(gòu)
CC-Link通信網(wǎng)絡(luò)的結(jié)構(gòu)如下圖所示：主PLC為CC-Link網(wǎng)絡(luò)控制PLC、1#PLC、2#PLC、3#PLC掛在CC-Link上組成隧道掘進(jìn)設(shè)備分區(qū)域集散控制系統(tǒng)，承擔(dān)隧道掘進(jìn)設(shè)備的基本控制任務(wù)；4#PLC、5#PLC、6#PLC是隧道掘進(jìn)設(shè)備自動控制系統(tǒng)的擴(kuò)展部分，承擔(dān)可以獨(dú)立運(yùn)行的單體設(shè)備的控制任務(wù)，它們根據(jù)需要掛上CC-Link通信網(wǎng)絡(luò)。
1#PLC接受主PLC的操作指令，接受主PLC、2#PLC、3#PLC送到CC-Link通信網(wǎng)絡(luò)上的開關(guān)量信號和模擬量信號，控制隧道掘進(jìn)設(shè)備2#臺車與3#臺車的設(shè)備，向CC-Link通信網(wǎng)絡(luò)上傳2#臺車與3#臺車的開關(guān)量信號和模擬量信號。共有DI128點(diǎn)、DO64點(diǎn)、AI8點(diǎn)，采用三菱電機(jī)的Q系列PLC。
2#PLC接受主PLC的操作指令，接受主PLC、1#PLC、3#PLC送到CC-Link通信網(wǎng)絡(luò)上的開關(guān)量信號和模擬量信號，控制隧道掘進(jìn)設(shè)備4#臺車與5#臺車的設(shè)備，向CC-Link通信網(wǎng)絡(luò)上傳4#臺車與5#臺車的開關(guān)量信號和模擬量信號。共有DI64點(diǎn)、DO32點(diǎn)、AI8點(diǎn)，采用三菱電機(jī)的Q系列PLC。
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