TRICONEX 3721 是专为 Triconex 安全仪表系统（SIS） 设计的高性能输入输出模块卡件，具备高可靠性、冗余设计及灵活配置能力，广泛应用于石油、天然气、化工等关键工业领域。

一、产品概述

类型：模拟量输入模块（部分资料提及数字输入功能，可能存在型号细分或功能扩展）。

用途：采集过程变量（如温度、压力、流量等），提供安全联锁功能，实现安全控制策略。

兼容性：与 Triconex Trident 安全仪表系统 完全兼容，支持 TriStation 1131 软件进行配置和监控。

二、技术规格

输入通道：

数量：32 个差分模拟量输入通道（部分资料提及 16 个数字输入通道，可能为不同版本）。

类型：支持 4-20mA 或 0-10V 模拟信号输入，兼容触点闭合、电压信号和电流信号。

精度：高分辨率（12 位或 14 位可选），精度在 0°C 至 60°C 时小于 FSR 的 0.15%。

隔离：输入通道之间具备电气隔离，防止干扰。

性能参数：

输入范围：-5V 至 +5V、0V 至 +5V 或 0V 至 +10V。

输入更新率：10 毫秒。

共模抑制比：-85 dB（DC-100 Hz）。

输入过载保护：150 VDC/115 VAC 连续。

环境适应性：

工作温度：-40°C 至 +70°C。

湿度范围：5% 至 95% RH（非凝结）。

振动：0.05g RMS（随机）。

冲击：15g（半正弦）。

电气特性：

功耗：最大 5W。

防护等级：IP65（部分资料提及）。

三、功能特性

三重冗余（TMR）架构：

即使在单个模块发生故障的情况下，也能确保系统连续运行，提供高可靠性。

每个通道独立运行，具备自我诊断和故障隔离能力。

可配置性：

每个通道可单独配置输入类型、滤波器、去抖动时间等参数，适应不同应用场景。

支持热插拔，可在不中断系统运行的情况下更换模块。

诊断与维护：

内置诊断功能，持续监控模块运行状况并检测潜在故障。

提供详细的故障报警信息，便于快速定位和修复问题。

兼容性与扩展性：

支持与 Triconex Trident 系统 的无缝集成，可扩展 I/O 模块。

支持多种通信协议，如 Modbus、TCP/IP 等，便于与其他设备或系统进行数据通信。

四、应用领域

石油与天然气：油气管道压力监测、井口设备控制。

化工：反应釜温度调节、流体流量控制。

电力：发电机组励磁控制、电网监测。

制造业：自动化生产线设备协同控制。

五、优势总结

高可靠性：TMR 架构和冗余设计确保系统在恶劣环境下的稳定运行。

灵活性：可配置的通道参数和热插拔功能，适应不同工业场景需求。

易用性：支持 TriStation 1131 软件进行配置和监控，降低使用门槛。

广泛兼容性：与 Triconex Trident 系统及其他主流 DCS（分布式控制系统）兼容。

TRICONEX 3721 is a high-performance input/output module card designed specifically for Triconex Safety Instrumented Systems (SIS), with high reliability, redundant design, and flexible configuration capabilities. It is widely used in key industrial fields such as petroleum, natural gas, and chemical engineering.

1、 Product Overview

Type: Analog input module (some materials mention digital input function, there may be model segmentation or function expansion).

Purpose: To collect process variables (such as temperature, pressure, flow rate, etc.), provide safety interlock function, and implement safety control strategies.

Compatibility: Fully compatible with the Triconex Trident safety instrumented system, supporting TriStation 1131 software for configuration and monitoring.

2、 Technical specifications

Input channel:

Quantity: 32 differential analog input channels (some sources mention 16 digital input channels, which may be different versions).

Type: Supports 4-20mA or 0-10V analog signal input, compatible with contact closure, voltage signal, and current signal.

Accuracy: High resolution (12 bit or 14 bit optional), with an accuracy of less than 0.15% of FSR between 0 ° C and 60 ° C.

Isolation: There is electrical isolation between input channels to prevent interference.

Performance parameters:

Input range:- 5V to+5V, 0V to+5V, or 0V to+10V.

Input ｕｐｄａｔｅ rate: 10 milliseconds.

Common mode rejection ratio:- 85 dB (DC-100 Hz).

Input overload protection: 150 VDC/115 VAC continuous.

Environmental adaptability:

Working temperature:- 40 ° C to+70 ° C.

Humidity range: 5% to 95% RH (non condensing).

Vibration: 0.05g RMS (random).

Impact: 15g (half sine).

Electrical characteristics:

Power consumption: maximum 5W.

Protection level: IP65 (mentioned in some materials).

3、 Functional characteristics

Triple Redundancy (TMR) Architecture:

Even in the event of a single module failure, the system can ensure continuous operation and provide high reliability.

Each channel operates independently and has the ability to self diagnose and isolate faults.

Configurability:

Each channel can be individually configured with input type, filter, debounce time and other parameters to adapt to different application scenarios.

Supports hot swapping, allowing for module replacement without interrupting system operation.

Diagnosis and maintenance:

Built in diagnostic function, continuously monitoring module operation status and detecting potential faults.

Provide detailed fault alarm information for quick location and repair of problems.

Compatibility and Scalability:

Support seamless integration with the Triconex Trident system and expandable I/O modules.

Supports multiple communication protocols, such as Modbus, TCP/IP, etc., for easy data communication with other devices or systems.

4、 Application Fields

Oil and gas: pressure monitoring of oil and gas pipelines, control of wellhead equipment.

Chemical industry: temperature regulation of reaction vessels, fluid flow control.

Electricity: excitation control of generator sets, grid monitoring.

Manufacturing industry: Collaborative control of automated production line equipment.

5、 Summary of Advantages

High reliability: TMR architecture and redundancy design ensure stable operation of the system in harsh environments.

Flexibility: Configurable channel parameters and hot swappable functionality to meet the needs of different industrial scenarios.

Usability: Supports TriStation 1131 software for configuration and monitoring, reducing the threshold for use.

Wide compatibility: Compatible with Triconex Trident systems and other mainstream DCS (distributed control systems).

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