I精品文档---下载后可任意编辑毕业设计论文六层电梯的 PLC 控制系统设计IIII精品文档---下载后可任意编辑摘 要 本文介绍一种电梯 PLC 控制系统。电梯是垂直方向的运输设备，是高层建筑中不可缺少的交通运输设备,在人们生活中起着举足轻重的作用。它靠电力拖动一个可以载人或物的轿厢，在建筑物的井道内导轨上做垂直升降运动，要求达到电梯运行的“稳、准、快”的运行。本系统主要由 PLC、变频器、沟通异步电动机、继电器、行程开关、按钮和发光指示器组成，采纳以西门子公司的可编程控制器 S7-200 对电梯模型进行全过程控制。 如今电梯已成为人们进出高层建筑不可或缺的工具，而采纳 PLC与变频器组成的变频调速电梯具有很好的控制效果，整个系统通过PLC、变频器对电梯的升降、加减速、平层、起动制动进行控制,其结构简单、运行效率高、平层准确。关键词:PLC控制系统；电梯模型；旋转编码器；变频器 Abstract This text introduces the control system of a kind of elevator elevator is perpendicular directional of the conveyance equipments be indispensable in the high building of transportation equipments,there is IIIIIII精品文档---下载后可任意编辑prominent function in the people's depends electric power, dragging along to move a car that can carry persons or things and lead a track in the building of the well way up do perpendicularity to ascend and descend sport, Request to attain the movement purpose of "steady, quasi-, quick" of elevator system is mainly composed of PLC, frequency converter ,asynchronous motor,relays,trip switch,button,and a light indicator, It controls the whole process on the elevator by the programmable controller S7-200 of SIEMENS company.Now the elevator has become indispensable tool by which people go in and out the high-rise building ， VVVF elevator composed by PLC and the transducer have good control effect,The entire system controls the elevator lift, acceleration and deceleration, leveling, start braking through the PLC and inverter. The...
