TRICONEX 4351A safety instrumented system (SIS)

The Triconex 4351A is a module from the Tricon safety instrumented system (SIS) by Schneider Electric (formerly Triconex). It is part of the Tricon v9–v11 series and serves as a communication module or I/O module, depending on the configuration.

Key Technical Parameters of Triconex 4351A:

1. Function:

• Acts as a communication module (e.g., for Modbus, TriStation communication) or specialized I/O module in a Tricon system.
• Supports redundant communication for high availability.

2. Compatibility:

• Works with Tricon v9, v10, and v11 systems.
• Interfaces with Tricon Main Processors (MPs) and other I/O modules.

3. Communication Protocols:

• Supports TriStation protocol (for Triconex engineering software).
• May support Modbus RTU/TCP (depending on firmware).
• Optional Ethernet or serial communication (varies by model).

4. Power Requirements:

• Typically operates on 5V DC (supplied via the Tricon backplane).
• Power consumption: Low to moderate (exact specs depend on configuration).

5. Environmental Ratings:

• Operating Temperature: -40°C to +70°C (-40°F to +158°F).
• Humidity: 5% to 95% (non-condensing).
• Certifications: Compliant with IEC 61508 (SIL 3) for safety systems.

6. Redundancy & Fault Tolerance:

• Supports Triple Modular Redundancy (TMR) for high reliability.
• Automatic fault detection and failover.

7. Physical Dimensions & Mounting:

• Standard Tricon module size (fits in a Tricon chassis).
• Hot-swappable (in most configurations).

Applications:

• Used in critical safety systems (e.g., emergency shutdown systems, fire & gas systems).
• Deployed in oil & gas, petrochemical, power plants, and other high-risk industries.