【摘要】 本文介绍了由西门子S7-226PLC与MM440变频器组成的电气控制系统在光缆护套机速度控制中的应用,并对该系统的控制原理作了详细的阐述。更多还原

【Abstract】 This paper introduces the application of an electricity control system that is composed of SIEMENS S7-226PLC and MM440VVVF in the speed control system of F iber optic cable coating machine,and the control principle of this system is in-troduced in detailed.更多还原