重型板式給料机料位与重量综合步进控制系统.doc

重型板式给料机料位与重量综合步进控制系统 软件设计 Heavy Plate Feeder Level and The Weight of The Integrated Control System for Stepper software Design 基于S7-200PLC的重型板式给料机控制系统 摘要 重型板式给料机是运输机械的辅助设备，该机在大型选矿厂破碎分级车间及水泥、建材等部门，作为料仓向初级破碎机连续和均匀给料之用，也可用于短距离输送粒度与比重较大的物料。在我国，沈矿、大华重机、南昌重机和江苏保龙是生产板式给料机的主要厂家。伴随着科学技术的发展，利用PLC、传感器技术、变频技术，将机械设备在正常及事故情况下的监测、保护、控制，合在一起，达到良好管理，已成为一种必然趋势和发展方向。 本论文课题主要是根据西门子S7-200编程软件对给料机进行自动化控制，其中论文还介绍了变频器、传感器的应用与选择，还有各电器间的电路连接图以及对PLC编程软件的详细介绍。根据控制要求绘制出系统流程图、电路图和PLC外部接线图。最后利用S7-200编程软件绘制出程序梯形图。 设计出的控制系统能够实现自动、手动操作；紧急停机；变速运行和在料位低于等于1000mm时停止。同时与破碎机连锁。 关键词：重型板式给料机、 可编程控制器、变频调节、超声波传感器 Based on the S7-200PLC heavy plate feeder control system ABSTRACT Heavy plate feeder is transport machinery equipments, the broken graded workshop and large concentrator, cement, building materials such as silo to primary department is continuous and crusher feeding, can also be used to transport large size and proportion of short of materials.In our country, shen ore, dahua juki, nanchang juki and jiangsu the dragon is the main type feeder. Along with the development of science and technology, using PLC, frequency conversion technology, sensor technology and equipment in the normal and will be under the circumstance of accident, protection, control, monitor close together, achieve good management, has become an inevitable trend and development direction. This thesis topic is mainly based on Siemens S7-200 programming software for feeder automation control, including papers were also introduces the application of inverter, sensor, and the choice and the connection between the electrical circuit diagram and software of PLC programming the detailed introduction. According to the control system flowcharts, draw the circuit diagram and PLC external hookup. Finally, using the S7-200 programming software rendering a process ladder diagram. The control system is designed to realize automatic and ma