TRICONEX 4211 拓展模块是专为工业自动化控制系统设计的高性能远程扩展模块：
一、核心功能
信号传输距离延长
支持连接距离控制器最远 1,000米（部分型号可达12公里）的I/O模块，突破传统电缆传输距离限制，适用于大型工业场景（如石油、化工、电力、冶金等）。冗余设计提升可靠性
- 双通道冗余：模块具备两个独立通道，一个通道故障时自动切换至备用通道，确保系统连续运行。
- 三重化表决机制：对数字输入/输出进行三重表决，模拟输入取中值处理，任一分电路故障不影响其他电路，支持在线维修（需热备卡件配合）。
多类型I/O支持
可连接 16个I/O点，支持数字输入、数字输出、模拟输入、模拟输出等多种类型，满足复杂控制需求。
二、技术参数
- 工作电压：24V DC / 120V AC（部分型号支持16-32V DC）。
- 输出频率：50kHz（TMR监督/非监督DO）。
- 通信速率：375 KB/s（光纤接口）。
- 环境适应性：
- 工作温度：0-50℃（部分型号支持更宽范围）。
- 相对湿度：≤90%（无凝结）。
- 认证标准：IEC 61508 SIL 3、IEC 62443-4 PLe，适用于安全关键型应用。
三、应用场景
- 石油化工：延长信号传输距离，连接分散的传感器和执行器，实现远程监控与控制。
- 电力行业：在变电站或发电厂中，连接远距离的I/O设备，提升系统稳定性。
- 冶金与钢铁：适应高温、粉尘等恶劣环境，确保高可靠性运行。
- 市政工程：如水处理、锅炉供暖等场景，实现长距离数据采集与控制。
四、优势特点
- 高可用性：冗余设计结合三重化表决机制，故障率极低，满足工业连续生产需求。
- 抗干扰能力强：光纤接口支持长距离传输，避免电磁干扰，数据稳定性高。
- 易于维护：模块化设计，支持在线更换故障部件，减少停机时间。
- 兼容性强：与Triconex全系列安全控制器兼容，可无缝集成至现有系统。
五、型号差异
- 4211-3：
- 光纤接口（ST连接器），支持单模光纤，传输距离达12公里。
- 支持6个远程站点，诊断指示灯包括PASS、FAIL、ACTIVE、TX、RX1-RX3。
- RXM4211：
- 结构形式为模块式，重量3.18公斤，外形尺寸49×45.3×6.8cm。
- 电缆类型为单模，支持7.5英里（12公里）传输，适用于数控机械、电子制造等领域。
六、选型建议
- 长距离传输需求：优先选择 4211-3，其光纤接口支持12公里传输，适合大型工厂或跨区域部署。
- 空间受限场景：选择 RXM4211，模块化设计节省安装空间，便于集成至紧凑型控制柜。
- 安全关键型应用：确保模块通过 IEC 61508 SIL 3 认证，满足功能安全要求。
The TRICONEX 4211 expansion module is a high-performance remote expansion module designed specifically for industrial automation control systems
1、 Core functions
Extended signal transmission distance
Supports connecting I/O modules up to 1000 meters (some models can reach up to 12 kilometers) away from the controller, breaking through the traditional cable transmission distance limitations and suitable for large-scale industrial scenarios such as petroleum, chemical, power, metallurgy, etc.
Redundant design enhances reliability
Dual channel redundancy: The module has two independent channels, and when one channel fails, it automatically switches to the backup channel to ensure the continuous operation of the system.
Triple voting mechanism: Triple voting is performed on digital inputs/outputs, with analog inputs being processed by taking the median. Any circuit failure does not affect other circuits, and online maintenance is supported (with the cooperation of hot spare cards).
Multi type I/O support
Can connect 16 I/O points, supporting various types such as digital input, digital output, analog input, analog output, etc., to meet complex control requirements.
2、 Technical parameters
Working voltage: 24V DC/120V AC (some models support 16-32V DC).
Output frequency: 50kHz (TMR supervised/unsupervised DO).
Communication speed: 375 KB/s (fiber optic interface).
Environmental adaptability:
Working temperature: 0-50 ℃ (some models support a wider range).
Relative humidity: ≤ 90% (no condensation).
Certification standards: IEC 61508 SIL 3, IEC 62443-4 PLe, suitable for safety critical applications.
3、 Application scenarios
Petrochemical industry: Extend signal transmission distance, connect dispersed sensors and actuators, and achieve remote monitoring and control.
Power industry: Connecting remote I/O devices in substations or power plants to enhance system stability.
Metallurgy and Steel: Adapt to harsh environments such as high temperatures and dust to ensure high reliability operation.
Municipal engineering: such as water treatment, boiler heating and other scenarios, to achieve long-distance data collection and control.
4、 Advantages and Characteristics
High availability: Redundant design combined with triple voting mechanism, with extremely low failure rate, meets the continuous production needs of industry.
Strong anti-interference ability: The fiber optic interface supports long-distance transmission, avoids electromagnetic interference, and has high data stability.
Easy to maintain: Modular design, supports online replacement of faulty components, reduces downtime.
Strong compatibility: Compatible with the entire range of Triconex safety controllers, it can be seamlessly integrated into existing systems.
5、 Model difference
4211-3：
Fiber optic interface (ST connector), supports single-mode fiber optic, with a transmission distance of up to 12 kilometers.
Supports 6 remote sites, with diagnostic indicators including PASS, FAIL, ACTION, TX, RX1-RX3.
RXM4211：
The structural form is modular, weighing 3.18 kilograms, and the external dimensions are 49 × 45.3 × 6.8cm.
The cable type is single-mode and supports 7.5 miles (12 kilometers) transmission, suitable for fields such as CNC machinery and electronic manufacturing.
6、 Selection suggestions
Long distance transmission requirements: Priority should be given to 4211-3, whose fiber optic interface supports 12 kilometer transmission and is suitable for large factories or cross regional deployment.
Space limited scenario: Choose RXM4211 for modular design to save installation space and facilitate integration into compact control cabinets.
Safety critical applications: Ensure that modules pass IEC 61508 SIL 3 certification and meet functional safety requirements.
