Description
TRICON 4351B
Product Overview
Technical Specifications
| Item | Parameter |
|---|---|
| Part Number | TRICON 4351B |
| Module Type | Tricon Communication Module (TCM) |
| Manufacturer | Triconex, Schneider Electric |
| Applicable Platform | Tricon TMR Safety Instrumented System |
| Ethernet Interfaces | 2 × RJ45, 10/100 Mbps auto-sensing |
| Serial Interfaces | 4 × RS232/RS485 DB9 ports, max 115.2 kbps per channel |
| Port Isolation | 500 VDC port-to-chassis galvanic isolation |
| Supported Protocols | Modbus TCP/RTU, TriStation, TSAA, Peer-to-Peer UDP/IP, SNTP |
| Installation Form | Standard plug-in module for Tricon rack |
| Power Supply | Powered by rack backplane |
| Operating Temperature | -20℃ ~ +70℃ |
| Ambient Humidity | 5%–95% non-condensing |
| Protection Class | IP20 (cabinet internal mounting) |
| Hot Swap Support | Yes |
| Safety Standard | Suitable for SIL3 safety loop architecture (IEC 61508) |
| Spare Part Status | Original production discontinued; new surplus and refurbished modules available |
Key Features
- Integrated dual Ethernet and multi-channel serial ports, flexible to connect different types of industrial control devices
- Supports Modbus master/slave mode, convenient for interconnection with mainstream DCS and PLC systems
- Enables TriStation engineering download, online monitoring and sequence of events (SOE) data upload
- Hot-swappable design; module replacement will not interrupt the running safety system
- Built-in comprehensive diagnostic functions with front panel LED indicators for link status and fault alarm
- Galvanic isolation design suppresses electromagnetic interference and prevents external signal disturbance affecting safety logic
- Supports peer-to-peer communication between multiple Tricon racks for distributed safety control
- Different hardware revisions cannot be directly interchanged; full part number verification is required before replacement
- Rugged industrial mechanical structure for long-term continuous unattended operation
The part number TRICON 4351B (Triconex Model 4351B) refers to a high-performance communication module manufactured by Triconex (Schneider Electric / Invensys).
4351B
Product Overview
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Manufacturer: Triconex (Schneider Electric)
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Part Number / Model: 4351B (Tricon Communication Module – TCM)
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Component Type: Network and Serial Communication Interface Module
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Platform: Tricon Triple-Modular Redundant (TMR) Safety Instrumented System (SIS) — compatible with system version v10.0 and later.
Key Specifications & Features
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Physical Interfaces:
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4 Serial Ports: Supports RS-485 / RS-232 communication (up to 115.2 kbps per port) configurable for Modbus master/slave or TriStation links.
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2 Ethernet Ports: Copper network ports (10/100 Mbps) for high-speed local area network or plant-wide data integration.
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Supported Protocols: Natively supports TriStation, Modbus (TCP/IP, RTU/ASCII), TCP/IP, SNTP (for time synchronization), TSAA, and ICMP diagnostics.
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TMR Architecture: Built to integrate smoothly into the fault-tolerant, triple-modular redundant environment, ensuring high availability and secure data handling without risking single-point safety failures.
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Hot-Swappable: Designed to support online replacement, allowing a failed module to be swapped out without powering down the safety controller system.
Industrial Deployment
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Applications: Utilized extensively in critical safety and control environments—such as oil and gas refineries, petrochemical plants, nuclear and conventional power generation—to bridge isolated Tricon safety controllers with supervisory control systems (DCS, SCADA), HMIs, and third-party instruments.
