摘要
可编程逻辑控制器(PLC)控制系统的可靠性直接影响到工业企业的安全生产和经济运行,而系统的抗干扰能力是整个系统可靠运行的关键。论述了PLC控制系统中的干扰源主要来自空间辐射、系统外引线、PLC系统内部3个方面,并分析了这些干扰在控制系统中的影响,提出了几种抗干扰的主要措施,即电源部分的拦截、采用合适的电缆以及电缆的正确敷设、完善而合理的接地系统以及软件解除干扰。
The reliability of PLC （Programmable Logic Controller） control system directly influences the safety and economy of industrial enterprises,while the anti- interference capability is the key to its reliable operation. Three kinds of interference sources are discussed：space radiance,down-lead from external system and internal interference,and their influences on the control system are analyzed. Some countermeasures are suggested：the lightning- proof isolation of electric power,appropriate cables and correct cabling,proper grounding system and saftware methods.
出处
《电力自动化设备》
EI
CSCD
北大核心
2006年第8期8-11,共4页
Electric Power Automation Equipment
