摘要
Abstract
In order to better promote the application of PLC technology in the mechanical and electrical equipment,the data collection,control program and control output functions of PLC technology were analyzed,and its application in power supply system,ventilation system,lifting system and transportation system was studied.The results show that the PLC can calculate the signal,and the calculated voltage greater than 1.2 U is overvoltage,and less than 0.8 U is undervoltage.If the calculat-ed current is 6 times of greater than the rated current,it is a short circuit,and it is overloaded between 1.2～6 times.PLC can constantly monitors the operating status of elevator to ensure it is operating normally.PLC can monitor the voltage,cur-rent,operating power and other parameters of the fan in real time to ensure its normal operation.关键词
煤矿机电设备/PLC/数据收集/供电系统/通风系统/运输系统Key words
coal mine mechanical and electrical equipment/PLC/data collection/power supply system/ventilation system/transportation system分类
矿业与冶金
