容错控制系统可以识别和补偿控制系统元件的故障，并允许在继续完成指定任务的同时，对故障元件进行修复，不中断过程控制。即:Tricon控制系统能够在不影响正常生产的同时修复系统故障。具有以下特点:高度安全性一一/取决于TMR硬件结构, 自诊断以及在线维修高可用性-消除误停车高维护性一在线更换故障 卡件,不必停车, 维护操作无需培训 1、无单点故障 采用隔离技术: .豆丁每一通道内部的三重电路都是独立的;三動余的主处理器;每个组件箱内都配备两重冗电源(均分负荷的冗余电源) ; 在I/O组件内部没有共享部件;通道间完全隔离(能够避免现场仪表因接地带来的问题) ; 系统与现场之间隔离(避免因单一模块被强电击穿而造成整个系统故障) ; 2、在线维护 故障硬件可以被在线更换，体现了Tricon系统的高可利用率。 3、在线诊断(自诊断) -在发生 系统危险前抓住隐患。自诊断功能内置于Tricon的硬件内，不需要用户编写应用程序，它是长期可靠性及可用性与短期可靠性与可用性的区别，也是Tricon TMR系统区别于其它PLC的技术优点。 Fault tolerant control systems can identify and compensate for faults in control system components, and allow for repair of faulty components while continuing to complete specified tasks without interrupting process control. That is, the Tricon control system can repair system faults without affecting normal production. It has the following characteristics: high safety -/depends on the TMR hardware structure, self diagnosis and online maintenance high availability - eliminates false parking and high maintenance - replaces faulty cards online without the need for parking, Maintenance operations do not require training 1. No single point of failure Adopting isolation technology: The triple circuits inside each channel of Douding are independent; Three redundant main processors; Each component box is equipped with two redundant power supplies (redundant power supplies with evenly distributed loads); There are no shared components within the I/O component; Complete isolation between channels (to avoid problems caused by grounding of on-site instruments); Isolation between the system and the site (to avoid the failure of the whole system due to the strong electric breakdown of a single module); 2. Online maintenance The faulty hardware can be replaced online, reflecting the high availability of the Tricon system. 3. Online diagnosis (self diagnosis) -Seize potential hazards before they occur in the system. The self diagnosis function is built into Tricon's hardware and does not require users to write application programs. It is the difference between long-term reliability and availability and short-term reliability and availability, and also the technical advantage of Tricon TMR system compared to other PLCs.
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