9566-810 现代化的可编程逻辑与过程控制器 现代化的可编程逻辑与过程控制器

1.1什么是TRICON?
TRICON是一种现代化的可编程逻辑 与过程控制器，可以提供高水士的系统容错能力的控制器3下面说明衮错是怎么二回事并列患TRICON系统
的主要特性。.
1.1.1什么是容错?
容错是TRICON系统的最为重要的能力，它是指对瞬态的和稳态的出错情况的探查发现的能力以及采取适当的相应的在线措施的能力。具賄容
错能力时，控制器及其控制的过程的安全性得以增强，利用率得以提高。
TRICON通过三重组合式冗余结构(TMR)而给出其容错能力。此系统由三个完全相同的系统支路组成(电源模件除外，该模件是双重宄余的)。每
个系统支路独立地执行控制程序,与其它两个支路并行工作。硬件表决机制则对所有来自区域场的数字式输入和输出进行考核和验定。模拟
输入则经受中值选择处理过程。
因为每一个支路都是和其它两个隔离的，任支路内的任何-一个单点失效都不会传递给其它两支。如果在一支内有硬件故障发生，该失效的
支就能被其它两支所补偿。所以修理工作,包括拆卸和更换失效的支路内的失效模件都可以在TRICON在线情况下进行，不使过程中断。系统
能自行重新配置而进行充分的TMR运作。
对于各个支路、各模件和各功能电路的广泛的诊断工作能够及时地探查到运行中的故障,并用指示器或警报作出报告。诊断还可以把有关故障
的信息存储在系统变量内。在发现有故障时，操作者可以利用诊断信息以修改控制动作，或者指导其维护过程。
从用户的观点看，使用是简单的，因为此三重系统工作起来和一个控制系统-样。用户连接感应器和作动器于单一的接线端上，诅用-组应
用逻辑为TRICON编程。余的事都由TRICON自行经管。

1.1 What is TRICON?
TRICON is a modern programmable logic and process controller that can provide a high fault tolerance controller for the system 3 below explain how the two things are side-by-side with the TRICON system
The main characteristics of. .
1.1.1 What is Fault Tolerance?
Fault tolerance is the most important capability of the TRICON system, which refers to the ability to detect transient and steady-state error situations and take appropriate online actions. Bear a grudge
When the capability is wrong, the security of the controller and the process it controls is enhanced, and the utilization rate is improved.
TRICON gives its fault tolerance through the triple combined redundant structure (TMR). The system consists of three identical system branches (except for the power module, which is doubly detailed). every
Each system branch executes the control program independently and works in parallel with the other two branches. The hardware voting mechanism checks and validates all digital inputs and outputs from the field. simulate
The input undergoes a median selection process.
Because each branch is isolated from the other two, any single point failure in either branch is not transmitted to the other two branches. If a hardware failure occurs within a branch, the failure occurs
One is compensated by the other two. As a result, repair work, including removal and replacement of failed modules in failed branches, can be carried out while TRICON is online without interrupting the process. System
Can reconfigure itself for full TMR operation.
Extensive diagnostic work for each branch, each module and each functional circuit can detect faults in operation in time and report them with indicators or alarms. Diagnosis can also be made about faults
The information is stored in system variables. When a fault is found, the operator can use the diagnostic information to modify the control action or to guide its maintenance process.
From the user’s point of view, use is simple because this triple system works like a control system. The user connects the sensor and the actuator on a single terminal, which is used as a group response
Program TRICON with logic. The rest is being handled by TRICON itself.

9566-810

9566-810