ESD在安全联锁应用的优势

The Advantage of ESD's Application in the Safety Interlock

就安全联锁系统的逻辑单元而言,ESD和DCS(或PLC)都有逻辑运算功能,都能实现安全联锁功能。文章从设计规定要求、ESD本身优势和现场操作维护方面比较分析,并通过一个应用实例,比较合理的解释了什么情况需要采用ESD并比较全面的分析了ESD比DCS(或PLC)在安全联锁方面应用的优势。

As for the logic unit of the safety interlock system,ESD and DCS（or PLC） all have logic operational function,all can realize the safety interlock function.The paper from the design code requirements,ESD itself advantage,comparison and analysis of the operations and maintenances in field,and through an example of application,explains reasonably in which situation need to use ESD,and analyzes in many aspects about the advantages of using ESD in the safety interlock system than using DCS（or PLC）.