DSRF197K01框架
使用Inline ECO Safe I/O模塊,無(wú)需安全軟件編程即可實(shí)現(xiàn)功能安全應(yīng)用。只需輕輕一插即可將安全I(xiàn)/O模塊集成到Inline I/O站點(diǎn)。通過(guò)認(rèn)證的適于安全分?jǐn)嚯娐返臄?shù)字量輸出模塊安裝在安全I(xiàn)/O模塊的右邊。傳感器激活時(shí)(如急停),出于安全考慮,執(zhí)行器將切斷對(duì)所接輸出模塊的供電。一個(gè)安全I(xiàn)/O模塊最多可連接兩條雙通道傳感器回路。所有狀態(tài)和故障信息均發(fā)送到標(biāo)準(zhǔn)控制器以便監(jiān)測(cè)。安全I(xiàn)/O模塊可輕松采用SafetyBridge技術(shù),無(wú)需安全控制器、安全總線即可實(shí)現(xiàn)整個(gè)分布式系統(tǒng)的功能安全。
DSRF197K01框架Inline ECO特別適用于機(jī)械制造、非標(biāo)自動(dòng)化、物流輸送、市政、基礎(chǔ)設(shè)施等行業(yè)。One slice,One function——如同接線端子一般簡(jiǎn)單易用的分布式IO模塊。PROFIBUS是一種開(kāi)放式現(xiàn)場(chǎng)總線,它是適用于各種任務(wù)的最優(yōu)化網(wǎng)絡(luò),網(wǎng)絡(luò)配置靈活,即使在非常惡劣的環(huán)境中也能可靠、穩(wěn)定運(yùn)行。 PROFIBUS由三個(gè)兼容部分組成,即PROFIBUS-DP(Decentralized Periphery)、PROFIBUS-PA(Process Automation過(guò)程自動(dòng)化)、PROFIBUS-FMS(Fieldbus Message Specification現(xiàn)場(chǎng)總線信息規(guī)范),它們有其各自獨(dú)特之處,而實(shí)際上又根據(jù)應(yīng)用要求常常構(gòu)成混合網(wǎng)絡(luò)結(jié)構(gòu),博取眾長(zhǎng)。本文結(jié)合天生橋二級(jí)電站機(jī)組控制系統(tǒng)中的控制設(shè)備,詳細(xì)分析Profibus-DP現(xiàn)場(chǎng)總線,著重從控制可靠性、聯(lián)網(wǎng)特點(diǎn)、經(jīng)濟(jì)性等方面進(jìn)行探討。PROFIBUS-PA專(zhuān)為過(guò)程自動(dòng)化設(shè)計(jì),可使傳感器和執(zhí)行機(jī)構(gòu)聯(lián)在一根總線上,并有本征安全規(guī)范。實(shí)質(zhì)上,PROFIBUS-PA就是“PROFIBUS-DP通信”+“對(duì)現(xiàn)場(chǎng)設(shè)備優(yōu)選的傳輸技術(shù)”。PA將自動(dòng)化系統(tǒng)和過(guò)程控制系統(tǒng)與壓力、溫度和液位變送器等現(xiàn)場(chǎng)設(shè)備連接起來(lái),PA可用來(lái)替代4-20mA的模擬技術(shù)。PROFIBUS-PA最最主要特性是,在過(guò)程自動(dòng)化的PROFIBUS-PA段與PROFIBUS-DP總線段之間通過(guò)藕合器連接,并實(shí)現(xiàn)兩段間的透明通信,使用與IEC1158-2技術(shù)相同的雙絞線完成遠(yuǎn)程供電和數(shù)據(jù)傳送。PROFIBUS-PA采用PROFIBUS-DP的基本功能來(lái)傳送測(cè)量值和狀態(tài)。目前,PROFIBUS-PA行規(guī)已對(duì)所有通用的測(cè)量變送器和其它選擇的一些設(shè)備類(lèi)型作了具體規(guī)定,這些設(shè)備如:測(cè)量壓力、液位、溫度和流量的變送器;數(shù)字量輸入和輸出;模擬量輸入和輸出;閥門(mén);定位器。PROFIBUS-PA的優(yōu)勢(shì)在于它可以節(jié)省50%以上的規(guī)劃、設(shè)計(jì)、安裝成本,此外,本質(zhì)安全能力和一個(gè)組態(tài)工具對(duì)所有儀器儀表都適用。天生橋二級(jí)電站位于貴州、廣西交界的南盤(pán)江上,屬于珠江流域水系,電站裝機(jī)6x220MW混流式水輪發(fā)電機(jī)組,電站型式為引水式。電站開(kāi)工于1982年,1992年12月第一臺(tái)機(jī)組投產(chǎn),2001年4月6臺(tái)機(jī)組全部安裝完畢。These methods, approaches and means are formed in the application of ibwp theory, so this layer is based on the theoretical layer, which has the status and role of connecting the preceding and the following logically. Without the middle tier, the theory and direction of ibwp cannot be realized and become a short theory. Without the support of advanced technology, the system engineering of the lower tier cannot be optimized. The main connotation of the method layer: (1) ibwpt is a method produced by the cross integration of modern science and technology such as information science and Architecture Science and technology. (2) Ibwpt is the embodiment of ibwp theory applied to modern weak current technology of intelligent buildings. (3) Ibwpt is a number of modern weak current technologies based on information technology, mainly including modern communication technology, modern computer technology, modern control technology, modern graphics and image technology, generic cabling technology, system integration, etc.