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一、引言目前的电梯大都采用传统的继电器群的控制方法,由于所用的继电器多,控制屏体积庞大,制作费时费力,噪声大,以微机为核心的可编程序控制器(PLC)是实现电梯自动控制的一种十分理想的设备,PLC编程简单方便,完全能代替传统的继电器群、噪音低。二、控制系统的选择 1.KB-40可编程序控制器我们选用KB-40可编程序控制器,它
I. INTRODUCTION Nowadays elevators mostly adopt the traditional control method of the relay group. Due to the large number of relays used and the large volume of the control panel, the time-consuming and noiseless production of the elevators makes the programmable logic controller (PLC) Automatic control of a very good equipment, PLC programming simple and convenient, completely replace the traditional relay group, low noise. Second, the choice of control system 1.KB-40 programmable controller We use the KB-40 programmable controller, it