TRICON卡件3721 TMR模拟输入模块具备三重冗余结构，这一特性显著提升了其在工业自动化和控制系统中的可靠性和安全性。

一、产品概述

TRICON卡件3721是一款4通道模拟输入模块，采用三重模块化冗余（TMR）结构。该模块通过三个独立的通道异步测量输入信号，并将结果传递给主处理器模块，从而提供高可用性和安全性。

二、三重冗余结构

冗余设计：

TRICON卡件3721的每个I/O模件内部都包含三个独立的分电路。

每个MP（主处理器）模件控制系统都独立成为一路，并与其他两个MP并行工作。

这种三重冗余设计使得在任何一个通道或组件发生故障时，系统都能继续运行，不会中断控制过程。

工作原理：

在模拟输入模块上，三个通道中的每一个都异步测量输入信号，并将结果放入一个值表中。

三个输入表中的每一个都通过相应的I/O总线传递给相关的主处理器模块。

每个主处理器模块中的输入表通过Tricon传输到它的邻居，中间值由每个主处理器选择，并相应地修正输入表。

在TMR模式下，控制程序使用中值数据；在双工模式下，则使用平均值。

三、技术规格与功能

输入范围：0至5VDC或-5至+5VDC，提供宽输入范围以适应不同的应用场景。

分辨率：16位，高精度的测量能力确保了信号的准确性和稳定性。

本质安全（IS）认证：适用于危险区域的本质安全认证，确保了系统在危险环境下的安全运行。

故障安全操作：在发生故障时，系统能够自动切换到安全状态，确保人员和设备的安全。

诊断功能：提供诊断功能，帮助识别和解决问题，降低了维护成本和停机时间。

四、应用领域

TRICON卡件3721 TMR模拟输入模块广泛应用于石油、天然气、化工、电力等工业领域，特别是在需要高可靠性和安全性的自动化和控制系统中。其三重冗余结构和多种功能特点使得它成为这些领域中的理想选择。

五、维护与检查

为确保TRICON卡件3721 TMR模拟输入模块的稳定运行和延长使用寿命，用户应定期进行维护和检查。这包括清洁模块表面、检查连接器接触状态、验证信号线连接是否牢固以及根据系统要求正确配置模块的软件参数等。同时，用户还应遵守所有相关安全规程，确保人身安全和设备安全。

The TRICON card 3721 TMR analog input module has a triple redundant structure, which significantly improves its reliability and safety in industrial automation and control systems.

1、 Product Overview

The TRICON card 3721 is a 4-channel analog input module that adopts a triple modular redundancy (TMR) structure. This module measures input signals asynchronously through three independent channels and passes the results to the main processor module, providing high availability and security.

2、 Triple redundant structure

Redundant design:

Each I/O module of TRICON card 3721 contains three independent sub circuits inside.

Each MP (main processor) module control system is independent and works in parallel with the other two MPs.

This triple redundancy design ensures that in the event of a failure in any channel or component, the system can continue to operate without interrupting the control process.

working principle:

On the analog input module, each of the three channels asynchronously measures the input signal and puts the results into a value table.

Each of the three input tables is transmitted to the relevant main processor module through the corresponding I/O bus.

The input table in each main processor module is transmitted to its neighbors through Tricon, with intermediate values selected by each main processor and the input table adjusted accordingly.

In TMR mode, the control program uses median data; In duplex mode, the average value is used.

3、 Technical specifications and functions

Input range: 0 to 5VDC or -5 to+5VDC, providing a wide input range to adapt to different application scenarios.

Resolution: 16 bits, high-precision measurement capability ensures the accuracy and stability of the signal.

Intrinsic Safety (IS) Certification: An intrinsic safety certification applicable to hazardous areas, ensuring the safe operation of the system in hazardous environments.

Fault safe operation: In the event of a malfunction, the system can automatically switch to a safe state to ensure the safety of personnel and equipment.

Diagnostic function: Provides diagnostic functions to help identify and solve problems, reducing maintenance costs and downtime.

4、 Application Fields

The TRICON card 3721 TMR analog input module is widely used in industrial fields such as petroleum, natural gas, chemical, and power, especially in automation and control systems that require high reliability and safety. Its triple redundant structure and multiple functional features make it an ideal choice in these fields.

5、 Maintenance and Inspection

To ensure the stable operation and extended service life of the TRICON card 3721 TMR analog input module, users should regularly maintain and inspect it. This includes cleaning the surface of the module, checking the contact status of the connectors, verifying the firmness of the signal line connections, and correctly configuring the software parameters of the module according to system requirements. At the same time, users should also comply with all relevant safety regulations to ensure personal and equipment safety.

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TRICONEX TRICONEX 8311    

TRICONEX 3625      

TRICONEX 3664     

TRICON HD8311   

TRICONEX 3721     

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