F6217-984621702 SIS一般采用多重冗余结构以提高系统的硬件故障裕度

Description

F6217-984621702 SIS一般采用多重冗余结构以提高系统的硬件故障裕度

安全仪表系统（Safety Instrumented System，简称SIS）是一种用于工厂控制系统中报警和联锁部分的安全控制系统，F6217-984621702能够实施报警动作或调节或停机控制，是工厂企业自动控制中的重要组成部分。

安全仪表系统主要具有以下特点：

覆盖面广、安全性高、有自诊断功能，能够检测并预防潜在的危险。
具有容错性的多重冗余系统，SIS一般采用多重冗余结构以提高系统的硬件故障裕度，单一故障不会导致SIS安全功能丧失。

应用程序容易修改，可根据实际需要对软件进行修改。

自诊断覆盖率大，工人维修时需要检查的点数比较少。

可实现从传感器到执行元件所组成的整个回路的安全性设计，具有I/O短路、断线等监测功能。

F6217-984621702 安全仪表系统包括传感器、逻辑运算器和最终执行元件，即检测单元、控制单元和执行单元。其中，传感器用于检测工艺参数，逻辑运算器用于进行逻辑运算和控制，最终执行元件则根据逻辑运算器的结果执行相应的动作，如报警、停机等。

此外，F6217-984621702安全仪表系统的等级划分也是衡量其可靠性的重要因素。根据安全等级系数，安全仪表系统可以分为一级、二级和三级等不同等级。其中，一级安全仪表系统的可靠性最高，三级最低。

总的来说，安全仪表系统是一种高可靠性的控制系统，广泛应用于工业自动化领域中，能够保障工厂和企业的安全稳定运行。

F6217-984621702 SIS一般采用多重冗余结构以提高系统的硬件故障裕度

The Safety Instrumented System (SIS) is a safety control system for the alarm and interlock part of a factory control system. The F6217-984621702 is capable of implementing alarm action or adjustment or shutdown control, and is an important part of the automatic control of a factory.

The safety instrument system mainly has the following characteristics:

Wide coverage, high safety, self-diagnostic function, can detect and prevent potential hazards.
Multiple redundancy system with fault tolerance, SIS generally adopts multiple redundancy structure to improve the hardware fault margin of the system, and a single fault will not cause the loss of SIS safety function.

The application program is easy to modify, and the software can be modified according to actual needs.

The coverage rate of self-diagnosis is large, and the number of points that workers need to check when maintaining is relatively small.

It can realize the safety design of the whole loop from the sensor to the actuator, and has the monitoring function of I/O short circuit and broken line.

The F6217-984621702 safety instrumentation system consists of sensors, logic operations and final execution elements, namely detection units, control units and execution units. Among them, the sensor is used to detect the process parameters, the logic arithmetic is used to carry out logical operations and control, and the final executive element executes the corresponding actions according to the results of the logic arithmetic, such as alarm and shutdown.

In addition, the classification of the F6217-984621702 safety instrument system is also an important factor to measure its reliability. According to the safety grade coefficient, the safety instrument system can be divided into one level, two level and three level. Among them, the first-level safety instrument system has the highest reliability and the third-level safety instrument system has the lowest reliability.

In general, the safety instrument system is a highly reliable control system, widely used in the field of industrial automation, to ensure the safe and stable operation of factories and enterprises.