【正文】 1所以 PLC控制系統(tǒng)接地應(yīng)采用一點(diǎn)接地方式如圖 53 所示接地線應(yīng)粗一些以減小各個(gè)電路部件之間的地電位差從而減小地環(huán)流的干擾另外屏蔽地保護(hù)地不能與電源地信號(hào)地等各其他地接在一起只能獨(dú)立的接到接地銅牌上 圖 54 一點(diǎn)接地方式示意圖 6 總結(jié) 礦井膠帶運(yùn)輸系統(tǒng)是分布復(fù)雜部件繁多且又要求運(yùn)行協(xié)調(diào)一致的連續(xù)運(yùn)輸系統(tǒng)因此在膠帶運(yùn)輸系統(tǒng)集中監(jiān)視和控制保證膠帶的安全 可靠運(yùn)行提高運(yùn)輸效率是很必要的本論文研究設(shè)計(jì)了 PLC 為核心的皮帶輸送機(jī)集中控制系統(tǒng)本文重點(diǎn)介紹了以下幾點(diǎn)內(nèi)容 結(jié)合實(shí)際情況設(shè)計(jì)了集中控制系統(tǒng)的結(jié)構(gòu)和要完成的控制功能并對(duì)其各個(gè)組成部分分別論述根據(jù)功能要求對(duì)參數(shù)檢測(cè)和故障保護(hù)裝置中使用的傳感器進(jìn)行選擇 通過估算的輸入輸出點(diǎn)數(shù)和要求的 PLC的存儲(chǔ)容量及響應(yīng)速度確定所用 PLC的型號(hào)和功能模塊 設(shè)計(jì)出了系統(tǒng)控制的流程圖使用 PLC 語言編寫了皮帶集中控制的部分程序 對(duì) PLC 控制系統(tǒng)的抗干擾措施進(jìn)行設(shè)計(jì) 由于是初次接觸煤礦的皮帶運(yùn)輸系統(tǒng)對(duì)現(xiàn)場(chǎng)的具體情況了解甚微所以設(shè)計(jì)中的很多細(xì)節(jié)部分考慮不周在結(jié)構(gòu)上也有不完善的地方我在以后的工作學(xué)習(xí)中會(huì)繼續(xù)努力的在本次設(shè)計(jì)過程中我學(xué)習(xí)到了很多知識(shí)掌握了西門子 S7300 PLC的相關(guān)知識(shí)可以熟練配置 PLC 的各種模塊尤其是對(duì)膠帶運(yùn)輸?shù)墓に嚵鞒棠z帶間的閉鎖關(guān)系膠帶運(yùn)輸過程中的一些常見故障及檢測(cè)方法和處理措施有了很深的了解為我以后的工作打下了很好的基礎(chǔ) 參考文獻(xiàn) [1] 于學(xué)謙 礦山運(yùn)輸機(jī)械 徐州 中國(guó)礦業(yè)大學(xué)出版社 1998 第 2 版 [2] 駱德漢 可編程控制器與現(xiàn)場(chǎng)總線網(wǎng)絡(luò)控制 北 京科學(xué)出版社 2020 第 1版 [3] 高欽和 可編程控制器應(yīng)用技術(shù)與設(shè)計(jì)實(shí)例 北京人民郵電出版社 2020 第 1 版 [4] 李斌 鄒燦 紅 PLC 控 制系 統(tǒng)抗 干擾 技術(shù) 研究 機(jī)電 工程 技術(shù)2020374103105 [5] 胡學(xué)林 可編程控制器教程提高篇 北京電子工業(yè)出版社 2020 [6] 廖常初 S7300400 PLC 應(yīng)用技術(shù) 北京機(jī)械工業(yè)出版社 2020 [7] 俞漢琪 電氣控制與可編程序控制器應(yīng)用技術(shù) 南京東南大學(xué)出版社2020 [8] 國(guó)家經(jīng)貿(mào)委安全生產(chǎn)局組織 帶式輸送機(jī)操作工 北京 氣象出版社2020 第 1 版 [9] 武予魯 帶式輸送機(jī)綜合保護(hù)裝置的工作原理與使用 北京煤炭工業(yè)出版社 2020 [10] 全國(guó)煤炭技工教材編審委員會(huì)編選煤機(jī)械 北京煤炭工業(yè)出版社 2020 [11] 薛琳 黃鶴松 礦用膠帶機(jī)集中控制系統(tǒng)的研制 工礦自動(dòng)化202058385 [12] 秦福建帶式輸送機(jī)常見故障的分析與處理方法 有色冶金節(jié)能20202213739 [13] 范明棟閔濤李明航張榮杰 輸送機(jī)地面集中控制系統(tǒng)的應(yīng)用 煤礦機(jī)電202049799 [14] 史志遠(yuǎn)朱真才等帶式輸送機(jī)斷帶保護(hù)裝置分析 煤礦機(jī)械 2020 8 8385 [15] 陳松立 控制電器與控制系統(tǒng) 徐州 中國(guó)礦業(yè)大學(xué)出版社 2020 第 1 版 [16] 汪志鋒 可編程控制器原理與應(yīng)用 西安 西安電子科技大學(xué)出版社 2020 第 1 版 [17] 廖常初 大中型 PLC 應(yīng)用教程 北京機(jī)械工業(yè)出版社 2020 第 1 版 [18] 鄭晟鞏建平張學(xué) 現(xiàn)代可編程控制器原理與應(yīng)用 科學(xué)出版社 2020第 1版 [19] SIEMENS 深入淺出西門子 S7300 PLC 西門子 中國(guó) 自動(dòng)化與驅(qū)動(dòng)集團(tuán) [20] SIEMENS 西門子 S7300 技術(shù)手冊(cè) 西門子 中國(guó) 自動(dòng)化與驅(qū)動(dòng)集 團(tuán) [21] Xu Guozheng Zhou jinghui Automatic substation monitoring system based on PLC Qinghua Daxue Xuebao 19983 6 [22] Priba PaulPameticky Terry PLC application for large motor monitoring 2020 8 5 241246 [23] Lewis RDesign of Distributed Control System in the Millennium Computing and Control Engineer Journal 1997 8 4 148152 [24] Li Hongsheng Li chao Design of distributing monitor system based on PLC and configuration software wuhan ligong Daxue Xuebao 2020 24 3 2732 [25] Loannides maria G Design and implementation of PLCbased monitoring control system for induction motor IEEE Transactions on Energy Conversion 2020 9 3 469476 [26] 王華韓永志 可編程序控制器在運(yùn)煤自動(dòng)化中的應(yīng)用 北京 中國(guó)電力出版社 2020 附錄 翻譯部分 英文原文 Design and Implementation of PLCBased Monitoring Control System for Induction Motor Maria G Ioannides Senior Member IEEE AbstractThe implementation of a monitoring and control system for the induction motor based on programmable logic controller PLC technology is described Also the implementation of the hardware and software for speed control and protection with the results obtained from tests on induction motor performance is provided The PLC correlates the operational parameters to the speed requested by the user and monitors the system during normal operation and under trip conditions Tests of the induction motor system driven by inverter and controlled by PLC prove a higher accuracy in speed regulation as pared to a conventional V f control system The efficiency of PLC control is increased at high speeds up to 95 of the synchronous speed Thus PLC proves themselves as a very versatile and effective tool in industrial control of electric drives Index TermsComputercontrolled systems puterized monitoring electric drives induction motors motion control programmable logic controllers PLCs variablefrequency drives voltage control I INTRODUCTION Since technology for motion control of electric drives became available the use of programmable logic controllers PLCs with power electronics in electric machines applications has been introduced in the manufacturing automation [1] [2]This use offers advantages such as lower voltage drop when turned on and the ability to control motors and other equipment with a virtually unity power factor [3] Many factories use PLCs in automation processes to diminish production cost and to increase quality and reliability [4]– [9] Other applications include machine tools with improved precision puterized numerical control CNC due to the use of PLCs [10]To obtain accurate industrial electric drive systems it is necessary to use PLCs interfaced with power converters personal puters and other electric equipment [11]– [13] Nevertheless this makes the equipment more sophisticated plex and expensive [14] [15] Few papers were published concerning dc machines controlled by PLCs They report both the implementation of the fuzzy method for speed control of a dc motenerator set using a PLC to change the armature voltage [16] and the incorporation of an adaptive controller based on the selftuning regulator technology into an existing industrial PLC [17] Also other types of machines were interfaced with PLCs Thereby an industrial PLC was used for controlling stepper motors in a fiveaxis rotor position direction and speed reducing the number of circuit ponents lowering the cost and enhancing reliability [18] For switched reluctance motors as a possible alternative to adjustable speed ac and dc drives a single chip logic controller for controlling torque and speed uses a PLC to implement the digital logic coupled with a power controller [19] Other reported application concerns a linear induction motor for passenger elevators with a PLC achieving the control of the drive system and the data acquisition [20]To monitor power quality and identify the disturbances that disrupt production of an electric plant two PLCs were used to determine the sensitivity of the equipment [21] Only few papers were published in the field of induction motors with PLCs A power factor controller for a threephase induction motor utilizes PLC to improve the power factor and to keep its voltage to frequency ratio constant under th