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HONEYWELL ASW454邏輯模擬量順序模塊

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HONEYWELL ASW454邏輯模擬量順序模塊

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HONEYWELL ASW454邏輯模擬量順序模塊 HONEYWELL ASW454邏輯模擬量順序模塊 HONEYWELL ASW454邏輯模擬量順序模塊
HONEYWELL ASW454邏輯模擬量順序模塊
整個被控對象包括22個工位,每個工位上包含必需的轉(zhuǎn)移電機或舉升電機,此外還有32個生產(chǎn)線傳輸電機。每個工位均由一個ET200S和一個ET200eco從站組成,用于該工位的I/O點數(shù)據(jù)采集和發(fā)送以及分散控制。    2 系統(tǒng)結(jié)構(gòu)及功能     系統(tǒng)包括操作員站、工程師站、自動化系統(tǒng)、網(wǎng)絡(luò)和現(xiàn)場I/O站等幾個部分。    系統(tǒng)各部分功能:     操作員站:提供全漢化
人機界面
，實現(xiàn)控制系統(tǒng)的監(jiān)控操作功能(操作、顯示、報表、報警、趨勢)，并且可以在人機界面上直接查看對應(yīng)的step7源程序。     工程師站:用于系統(tǒng)的組態(tài)和維護。     自動化系統(tǒng):使用SIMATIC控制器完成回路調(diào)節(jié)和邏輯運算。     現(xiàn)場I/O站:使用現(xiàn)場總線技術(shù)，在設(shè)備現(xiàn)場直接采集現(xiàn)場儀表的信號,控制現(xiàn)場的執(zhí)行機構(gòu)。     現(xiàn)場總線ProfiBus:用于連接控制單元與操作員站以及管理網(wǎng)絡(luò)。     本系統(tǒng)采用
PLC
300CPU和CP342-5、CP343-1的接口模塊相連構(gòu)成系統(tǒng)的主站。CP342-5是用于連接S7-300和profibus-DP的主/從站接口模塊，CP 343-1是用于連接S7-300和
工業(yè)以太網(wǎng)
的接口模塊。在該控制系統(tǒng)中，除了上述主站外，從站是由22個ET200S和22個ET200eco組成，分別分布在兩條profibus網(wǎng)絡(luò)上。CPU上自帶的profibus-DP接口構(gòu)成profibusⅠ線，CP 342-5接口模塊構(gòu)成profibusⅡ線。     系統(tǒng)中ET200S從站上采用的IM151-1接口模塊有兩種: 基本型和標(biāo)準(zhǔn)型，基本型的接口模塊所能掛接的電源管理模塊和I/O模塊個數(shù)范圍為2~12個，標(biāo)準(zhǔn)型的接口模塊其范圍為2~63個。所以當(dāng)從站I/O模塊較多時，宜選用標(biāo)準(zhǔn)型的接口模塊。接口模塊上帶有profibus地址設(shè)定撥碼開關(guān)。     系統(tǒng)中ET200eco從站中選用了8DI和16DI兩種模板，模板結(jié)構(gòu)緊湊，模板的供電采用7/8’電源線，模板的通訊采用M12通訊接頭。接線靈活而快速，方便拔插。其接口模塊上帶有2個旋轉(zhuǎn)式編碼開關(guān)用于profibus地址分配。     網(wǎng)絡(luò)設(shè)備按照適應(yīng)工業(yè)現(xiàn)場環(huán)境的程度，以及生產(chǎn)線的布局來考慮選用不同防護等級?？刂葡渲械哪K采用防護等級為20的ET200S I/O模塊，對應(yīng)每個控制箱的還有一個防護等級為67的ET200eco模塊，置于生產(chǎn)線滾輪下方，由于該模塊需要接觸到現(xiàn)場較為惡劣的生產(chǎn)環(huán)境，因此需要有防水防油防塵等功能。    3 目標(biāo)控制系統(tǒng)    3.1 系統(tǒng)設(shè)計     汽車發(fā)動機裝配線是一個對發(fā)動機順序裝配的流水線工藝過程。由于工藝的繁瑣性，工程的計算機控制系統(tǒng)考慮采用分散控制和集中管理的分布式控制模式，采用以PLC為核心構(gòu)成的計算機控制系統(tǒng)，各獨立工位控制系統(tǒng)之間通過網(wǎng)絡(luò)實現(xiàn)數(shù)據(jù)信息、資源共享。該裝配線在整個生產(chǎn)過程中較為關(guān)鍵，由于每個工位之間是流水線生產(chǎn)，因此每個環(huán)節(jié)的控制都必須具備高可靠性和一定的靈敏度，才能保證生產(chǎn)的連續(xù)性和穩(wěn)定性。從站中的每個ET200S站和其對應(yīng)的ET200eco站共同構(gòu)成一個工位, ET200eco主要是采集現(xiàn)場數(shù)據(jù)之用。ET200S站的模塊置于小型控制箱內(nèi), 對于工位的基本操作有兩種方式，就地控制箱手動方式和就地自動方式。由于每個控制工位的操作進度不一致，操作工可以按照裝配要求進行手自動切換。特殊情況下亦可通過手動操作進行工件位置的修正。     安裝在各工位的分布式I/O模塊ET200S和ET200eco通過現(xiàn)場檢測元件和傳感器將系統(tǒng)主要的監(jiān)控參數(shù)(主要是開關(guān)量)采集進來，ET200S和ET200eco將現(xiàn)場模擬量信號轉(zhuǎn)換為高精度的數(shù)據(jù)量，通過高速度可達12M的Profibus-DP現(xiàn)場總線網(wǎng)絡(luò)將采集數(shù)據(jù)上傳到中央控制器，控制器根據(jù)具體工藝要求進行處理，再通過Profibus-DP網(wǎng)絡(luò)將控制輸出下傳給ET200S，實現(xiàn)各工位的控制流程。The whole controlled object includes 22 stations, each station contains the necessary transfer motor or lifting motor, and 32 production line transmission motors. Each station is composed of an ET200S and an ET200eco slave station, which are used for I/O point data acquisition, transmission and decentralized control of the station. 2 System structure and function system include operator station, engineer station, automation system, network and field I/O station. Functions of all parts of the system: operator station: full Chinese interface
, realize the monitoring and operation functions of the control system (operation, display, report, alarm, trend), and can directly view the corresponding step 7 source program on the human-computer interface. Engineer station: used for system configuration and maintenance. Automation system: use SIMATIC controller to complete loop adjustment and logic operation. Field I/O station: use the field bus technology to directly collect the signals of field instruments on the equipment site and control the actuator on the site. ProfiBus: used to connect control unit, operator station and management network. This system adopts
PLC
The 300 CPU is connected with the interface modules of CP342-5 and CP343-1 to form the main station of the system. CP342-5 is the master/slave interface module used to connect S7-300 and profibus DP, and CP 343-1 is used to connect S7-300 and

Industrial Ethernet

Interface module of. In this control system, in addition to the above master station, the slave station is composed of 22 ET200S and 22 ET200eco, which are distributed on two profibus networks respectively. The profibus DP interface on the CPU constitutes profibus I line, and the CP 342-5 interface module constitutes profibus II line. There are two types of IM151-1 interface modules used in the ET200S slave station in the system: basic and standard. The number of power management modules and I/O modules that can be attached to the basic interface module ranges from 2 to 12, and the number of standard interface modules ranges from 2 to 63. Therefore, when there are many slave I/O modules, standard interface modules should be selected. The interface module is equipped with a profibus address setting dial switch. In the system, ET200eco slave station selects 8DI and 16DI templates, which are compact in structure. 7/8 'power lines are used for template power supply, and M12 communication connectors are used for template communication. The wiring is flexible and fast, convenient for plugging. Its interface module is equipped with two rotary coding switches for profibus address distribution. Different protection levels shall be considered for network equipment according to the degree of adaptation to the industrial site environment and the layout of the production line. The ET200S I/O module with protection class of 20 is used as the module in the control box, and there is also an ET200eco module with protection class of 67 corresponding to each control box, which is placed under the roller of the production line. Since the module needs to contact with the harsh production environment on site, it needs to have functions such as water, oil, dust, etc. 3. Target Control System 3.1 System Design The automobile engine assembly line is a flow line process for sequential assembly of engines. Due to the complexity of the process, the distributed control mode of decentralized control and centralized management is considered for the computer control system of the project. The computer control system with PLC as the core is adopted. The data information and resources are shared among the independent station control systems through the network. The assembly line is critical in the whole production process. As each station is produced by assembly line, the control of each link must have high reliability and certain sensitivity to ensure the continuity and stability of production. Each ET200S station in the slave station and its corresponding ET200eco station together constitute a station. ET200eco is mainly used to collect field data. The modules of ET200S station are placed in a small control box, and there are two basic operation modes for the station: manual mode of local control box and local automatic mode. Since the operation progress of each control station is inconsistent, the operator can switch manually and automatically according to the assembly requirements. Under special circumstances, the workpiece position can also be corrected by manual operation. The distributed I/O modules ET200S and ET200eco installed in each station collect the main monitoring parameters (mainly switching values) of the system through field detection elements and sensors. ET200S and ET200eco convert the field analog signals into high-precision data, upload the collected data to the central controller through the Profibus DP field bus network with a maximum speed of 12M, and the controller will process according to the specific process requirements, Then the control output is transmitted to ET200S via Profibus DP network to realize the control process of each station.