目录一、方案选择及论证..........................................11.1综述..................................................11.2 设计任务及要求..........................................11。3 设计思路...............................................21.3.1 电梯输入信号及意义................................21.3.2 电梯输出信号及其意义..............................31。4 PLC 选型...............................................31。4.1 PLC 的 I／O 点数估算...............................31。4。2 响应时间...........................................41。4。3 输入输出模块的选择..............................41。4.4 机型的确定.......................................4二、系统硬件设计............................................52。1 电梯模型介绍...........................................52。2 I/O 分配表.............................................52。2.1 输入输出点分配...................................52.2.2 中间辅助继电器....................................62.3 PLC I/O 接线图..........................................72.4 控制电路系统设计.......................................82。4.1、三相异步电动机的选取............................82。4。2、熔断器的选择...................................92。4.3 热继电器的选择...................................92。4.4 沟通接触器的选择.................................92。4.5 电机接线图......................................10三、系统软件设计.............................................113.1 程序流程图.............................................113。2 梯形图................................................123。2.1 电梯的平层信号登记与消除........................123.2。2 轿内指令信号登记及消除..........................133。2。3 轿内停层灯信号登记.............................143.2.4 厅门招呼开关信号的保持...........................153。2。5 电梯定向信号登记...............................163。2.6 电梯停站信号登记................................173。2。7 电机正反转信号登记.............................183。2。8 电梯开关门信号...
