ABB SL.MG99

是一种自动化控制系统CPU模块。它采用模块化设计，控制室安装，额定工作电压为220V，输出频率为30Hz，处理速度为15Hz，程序容量为3MB，数据容量为2MB。

It is an automated control system CPU module. It adopts a modular design, installed in the control room, with a rated working voltage of 220V, an output frequency of 30Hz, a processing speed of 15Hz, a program capacity of 3MB, and a data capacity of 2MB.