3721 is a significant product in the TRICONEX series and is part of the Triplicated Redundant Fault – Tolerant Control System (TMR). It adopts advanced fault – tolerant technology by integrating three identical processing units in one module and conducting real – time comparison and diagnosis to ensure the system can still operate normally when single or multiple faults occur.
Functional Characteristics
High Reliability: It adopts a triplicated redundant structure. Three processor modules simultaneously process the same input signals and determine the final output result through an internal voting mechanism. If one of the processors malfunctions, the other two normal processors will continue to work without affecting the overall operation of the system, which greatly improves the reliability and availability of the system.
Powerful Processing Capacity: It is equipped with a high – performance microprocessor that can quickly process a large number of input and output signals and implement complex control algorithms and logical operations. It can real – time monitor and control various parameters in industrial processes, such as temperature, pressure, and flow, to ensure the stable operation of industrial processes.
Flexible Configuration Options: It supports a variety of communication protocols and interface types, which can be easily integrated with other industrial equipment and systems. Users can flexibly configure the number of input and output points, communication parameters, etc., according to specific application requirements to meet the control requirements of different industrial scenarios.
Fault Self – Diagnosis and Tolerance Function: It has rich self – diagnosis functions, which can real – time monitor its own working status. Once a fault is detected, it will immediately send out an alarm signal and take corresponding fault – tolerance measures, such as automatically switching to the standby module or isolating the fault, to ensure the continuity of the system.
Application Areas
Petrochemical Industry: In the processes of oil refining and chemical production, it is used to control various complex technological processes, such as the temperature control of reaction kettles and the liquid – level control of distillation columns, to ensure the safety and stability of the production process and prevent safety accidents and production losses caused by control failures.
Power Industry: It can be applied in the distributed control system (DCS) of power plants to monitor and control the operation of generator sets, including the combustion control of boilers and the speed – regulation control of steam turbines, to ensure the reliability and efficiency of power production.
Metallurgical Industry: In the fields of steel smelting and non – ferrous metal processing, it is used to control parameters such as the temperature of furnaces and the flow of molten metal, as well as the operation of automated production lines, to improve production quality and efficiency and reduce the risks brought by manual intervention.
Other Industrial Fields: It is also widely used in industries such as papermaking, pharmaceuticals, and food and beverage. It precisely controls and monitors various industrial processes to meet the requirements of different industries for the reliability and stability of production processes.
