半连轧改造对电气设备的具体要求是：电气控制系统应具 有优的性能价格比，作为基础自动化系统的PLC控制级， 要求采用实时通信网络，将各可编程控制器及人机接口计算机联结在一起。人机接口计算机系统应以画面形式向操 作人员提供系统工作状态显示，并能输入/修改控制数据， 画面应简单实用利于维护，报警功能用于及时反映系 统有关设备的各种，可大大减少查找时间，提高 系统的作业率。作为下属设备控制级，由全数字控制的直 流可控硅调速系统及各类检测传感元件组成，根据上级设 定系统所发出的各种指令，准确地驱动机械设备动作。
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