摘要
PLC广泛应用于社会生产各个行业,因此讨论其可靠性以及提出设计方案是非常必要的。文章从PLC电力系统的角度分析了最为关注也是最为影响PLC可靠性的供电系统设计和I/O模板的供电设计,具体提出了供电系统保护措施的四种方法以及典型PLC系统供电电源设计以及24V直流和220V交流两种I/O模板的供电设计,
PLC is widely applied in all kinds of vocations in society. Therefore, it is necessary to discuss its reliability as well as put forward design methods. Power supply design of system and I/O blocks that have a serious effect on PLC＇s reliability are analysed in this paper. Four ways of power supply system protection and power supply design of general PLC system are concretely and two kinds of I/O blocks power design in 24V DC and 220V AC are given in the power supply design of I/O blocks.
出处
《煤矿现代化》
2007年第4期45-46,共2页
Coal Mine Modernization
