ABB 086329-003卡件,086329-003使用范圍靠性和便捷的調(diào)試功能贏得用戶(hù)的一致好評(píng),又一次在極其復(fù)雜的工業(yè)環(huán)境下經(jīng)受了嚴(yán)格的考驗(yàn)。在葫蘆素洗煤廠項(xiàng)目中,NA400 PLC采用以太網(wǎng)遠(yuǎn)程I/O的分布式結(jié)構(gòu),在電氣化驗(yàn)樓變電所內(nèi)設(shè) PLC主站,濃縮車(chē)間配電室、原煤倉(cāng)變電所、產(chǎn)品倉(cāng)變電所設(shè)PLC分站,在電氣化驗(yàn)樓集控室設(shè)PLC上位機(jī)。PLC主站與PLC分站之間,PLC與上位機(jī)之間通過(guò)工業(yè)以太網(wǎng)進(jìn)行通信,PLC與智能設(shè)備之間通過(guò)工業(yè)總線(xiàn)進(jìn)行通信,并考慮與瓦斯監(jiān)控系統(tǒng)、快速裝車(chē)站和烯烴項(xiàng)目的控制、通信接口,預(yù)留與大化肥項(xiàng)目的預(yù)留接口。
ABB 086329-003卡件PLC主站和從站I/O之間采用S908光纖聯(lián)網(wǎng),主站PLC與控制室之間采用以太網(wǎng)交換機(jī)聯(lián)網(wǎng). 項(xiàng)目概述: 半自磨電氣樓2個(gè)主站+1個(gè)I/O,變電所1個(gè)I/O ,電氣樓2主站+1個(gè)I/O,地面礦變電所、一期變電所、造廠電氣樓和原礦2#泵站值班室分別分布1個(gè)I/O。主站和從站之間均采用光纖聯(lián)網(wǎng)。(具體參見(jiàn)下圖1) 系統(tǒng)要求: 系統(tǒng)為施奈德昆騰系列PLC(主站CPU140CPU67160,主站適配器140CRP93200,從站適配器140CRA93200),以S908為基礎(chǔ)的遠(yuǎn)程I/O網(wǎng)絡(luò)技術(shù),RIO使用同軸電纜縛設(shè)線(xiàn)路,要求系統(tǒng)為S908雙網(wǎng)冗余,主站和從站之間采用光纖聯(lián)網(wǎng)。便于日后站點(diǎn)擴(kuò)展光纖中繼模塊統(tǒng)一選用為同一型號(hào)。使用設(shè)備型號(hào)及數(shù)量: Model:Ci-rf120-M 數(shù)量:16臺(tái) 產(chǎn)品功能介紹: * 產(chǎn)品遵照S908 RIO總線(xiàn)標(biāo)準(zhǔn), 1.544Mbps速率. * 數(shù)據(jù)接口采用F同軸接口,兼容進(jìn)口產(chǎn)品的接口形式 * 多模光纖2km,單模光纖20km,有效延伸傳輸距離. * DIN35工業(yè)導(dǎo)軌設(shè)計(jì),金屬鋁板,IP30防護(hù)等級(jí),點(diǎn)對(duì)點(diǎn)/鏈型拓?fù)浣Y(jié)構(gòu). * 雙電源冗余,提供光纖鏈路以及電源故障告警繼電器輸出. * 600W浪涌保護(hù)以及過(guò)載保護(hù),9-30V寬電源反接保護(hù). … 結(jié)束語(yǔ) 該系統(tǒng)采用Ci-rf120-M進(jìn)行光纖傳輸,解決了現(xiàn)場(chǎng)電磁干擾、地環(huán)干擾和雷電破壞的難題采用PLC自動(dòng)檢測(cè)水倉(cāng)水位和其它參數(shù),根據(jù)水倉(cāng)水位的高低、礦井用電信息等因素,建立數(shù)學(xué)模型,合理調(diào)度水泵運(yùn)行 隨著計(jì)算機(jī)控制技術(shù)的迅速發(fā)展,以微處理器為核心的可編程序控制器(PLC)控制已逐步 取代繼電器控制,普遍應(yīng)用于各行各業(yè)的自動(dòng)化控制領(lǐng)域。煤炭行業(yè)也不例外,但目前煤礦 井下主排水系統(tǒng)仍多采用繼電器控制,水泵的開(kāi)停及選擇切換均由人工完成,還做不到根據(jù)水位或其它參數(shù)自動(dòng)開(kāi)停水泵,這將嚴(yán)重影響井下主排水泵房的管理水平和經(jīng)濟(jì)效益的提高 。 岱莊煤礦是1999年設(shè)計(jì)竣工的生產(chǎn)能力為1.8Mt/a的現(xiàn)代化礦井,井下涌水量較大,中央泵 設(shè)計(jì)安裝了5臺(tái)MD500-57?9主排水泵,配套電動(dòng)機(jī)1250kW,3趟排水管路。正常涌水時(shí),2 臺(tái)工作,2臺(tái)備用,1臺(tái)檢修。
At the same time, it diagnoses the working status of power supply and PLC internal circuit and syntax errors in the programming process. After entering the operation, read the instructions one by one from the user program memory, and then generate corresponding control signals according to the tasks specified in the instructions after analysis to command the relevant control circuits.
CPU is mainly composed of arithmetic unit, controller, register and data, control and status bus to realize the connection between them. CPU unit also includes peripheral chip, bus interface and related circuits. Memory is mainly used to store programs and data. It is an indispensable unit of PLC.
In the view of users, it is not necessary to analyze the internal circuit of CPU in detail, but there should be enough understanding of the working mechanism of each part. The controller of the CPU controls the work of the CPU, which reads, interprets and executes instructions. But the work rhythm is controlled by the vibration signal.