1.1什么是TRICON?
TRICON是一種現(xiàn)代化的可編程邏輯 與過程控制器，可以提供高水士的系統(tǒng)容錯能力的控制器3下面說明袞錯是怎么二回事并列患TRICON系統(tǒng)
的主要特性。.
1.1.1什么是容錯?
容錯是TRICON系統(tǒng)的最為重要的能力，它是指對瞬態(tài)的和穩(wěn)態(tài)的出錯情況的探查發(fā)現(xiàn)的能力以及采取適當(dāng)?shù)南鄳?yīng)的在線措施的能力。具賄容
錯能力時，控制器及其控制的過程的安全性得以增強(qiáng)，利用率得以提高。
TRICON通過三重組合式冗余結(jié)構(gòu)(TMR)而給出其容錯能力。此系統(tǒng)由三個完全相同的系統(tǒng)支路組成(電源模件除外，該模件是雙重宄余的)。每
個系統(tǒng)支路獨立地執(zhí)行控制程序,與其它兩個支路并行工作。硬件表決機(jī)制則對所有來自區(qū)域場的數(shù)字式輸入和輸出進(jìn)行考核和驗定。模擬
輸入則經(jīng)受中值選擇處理過程。
因為每一個支路都是和其它兩個隔離的，任支路內(nèi)的任何-一個單點失效都不會傳遞給其它兩支。如果在一支內(nèi)有硬件故障發(fā)生，該失效的
支就能被其它兩支所補(bǔ)償。所以修理工作,包括拆卸和更換失效的支路內(nèi)的失效模件都可以在TRICON在線情況下進(jìn)行，不使過程中斷。系統(tǒng)
能自行重新配置而進(jìn)行充分的TMR運(yùn)作。
對于各個支路、各模件和各功能電路的廣泛的診斷工作能夠及時地探查到運(yùn)行中的故障,并用指示器或警報作出報告。診斷還可以把有關(guān)故障
的信息存儲在系統(tǒng)變量內(nèi)。在發(fā)現(xiàn)有故障時，操作者可以利用診斷信息以修改控制動作，或者指導(dǎo)其維護(hù)過程。
從用戶的觀點看，使用是簡單的，因為此三重系統(tǒng)工作起來和一個控制系統(tǒng)-樣。用戶連接感應(yīng)器和作動器于單一的接線端上，詛用-組應(yīng)
用邏輯為TRICON編程。余的事都由TRICON自行經(jīng)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