Triconex 4352B is a high-end fiber-optic communication module (TCM, Tricon Communication Module) from Schneider Electric Triconex brand, specifically designed for triple modular redundant (TMR) safety control systems running Tricon v10.3 or later. It serves as core communication hardware for safety instrumented systems (SIS).
Featuring a redundant architecture of dual fiber Ethernet and four serial ports, it delivers industrial-grade high reliability, strong electrical isolation, and long-distance transmission capability. It is ideally suited for safety-critical applications including emergency shutdown (ESD), fire and gas (F&G) systems, boiler interlocks, and long-distance oil and gas pipelines.The module enables stable, secure, interference-free data exchange between the controller and DCS, host computers, Modbus devices, peer-to-peer controllers, and remote operation and maintenance terminals. It also supports online hot swapping, full-link diagnostics, and time synchronization, making it a core component ensuring highly reliable communication in Tricon systems.
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Product Information
Model: 4352BType: Tricon Communication Module (TCM)Interface: Dual multi-mode fiber Ethernet + four isolated serial portsCompatible Systems: Tricon v10.3, v10.x, v11.xRedundancy: Dual Ethernet / four serial ports redundancy within module; dual-module hot standby in chassisSafety Rating: IEC 61508 SIL 3 certifiedEnvironmental Rating: ISA Class G3 corrosion-resistant certifiedMounting Location: Logic slots in main chassis (8110/8120E) or expansion chassis (Slot 2)Max Quantity per System: Up to 4 TCM modules (occupying 2 logic slots)
Technical Specifications
Hardware Physical Parameters
- Module Dimensions: Standard Tricon module size
- Weight: 5.0 lbs (2.3 kg)
- Logic Power Consumption: < 10 W
- Operating Voltage: Powered by system backplane (no external power required)
- Indicators: PASS, FAULT, ACTIVE, FIRM; Ethernet LINK/TX/RX; Serial TX/RX
- Mechanical Structure: Metal frame, anti-misinsertion design with keying
- Protection & Coating: Optional three-proof coating for marine / high-humidity / corrosive environments
Fiber Ethernet Interface
- Ports: 2 independent fiber Ethernet ports (NET1 / NET2)
- Connector Type: MT-RJ
- Fiber Type: Multi-mode 62.5/125 μm
- Wavelength: 1300 nm
- Standard: 100Base-FX (IEEE 802.3u)
- Speed: 100 Mbps
- Max Distance: 2 km (1.24 miles)
- Isolation: 500 VDC
- Supported Protocols: Modbus TCP, TriStation, TSAA, Peer-to-Peer, SNTP, Triconex Time Synchronization, JetDirect printing
Serial Communication Interface
- Ports: 4 independent auto-sensing RS-232 / RS-485 serial ports
- Connector Type: DB9
- Baud Rate: 1200 ~ 115.2 Kbps
- Aggregate Bandwidth: ≤ 460.8 Kbps (total for 4 ports)
- Isolation: 500 VDC
- Port 1 Function: Modbus RTU/ASCII, GPS time synchronization
- Port 4 Function: Modbus RTU/ASCII, TriStation programming / debugging
- Supported Protocols: Modbus Master/Slave (RTU/ASCII), TriStation
Environmental & Reliability Parameters
- Operating Temperature: 0 ~ 60 ℃ (32 ~ 140 ℉)
- Storage Temperature: -40 ~ 75 ℃ (-40 ~ 167 ℉)
- Relative Humidity: 5% ~ 95%, non-condensing
- Vibration: 1G @ 8.4~150Hz, 3.5mm @ 5~8.4Hz
- Shock: 15G, 6~11ms
- Corrosion Resistance: ISA S71.04 Class G3 (heavy industrial corrosion environment)
- EMC Immunity: Compliant with IEC 61000-4-2/3/4/5/6 industrial standards
- Safety Certifications: IEC 61508 SIL 3, CE, FM, CSA, TÜV, ATEX Zone 2
- MTBF: Industrial-grade high-reliability design
Core Functions
- Dual 100M fiber Ethernet communicationLong-distance, strong anti-interference, no electromagnetic radiation, suitable for communication in hazardous areas, petrochemical units and long-distance cabinets.
- Four isolated serial portsSupports Modbus master/slave mode for connecting instruments, PLCs, RTUs and other third-party devices.
- TriStation engineering communicationRemote programming, debugging, program upload/download, monitoring and SOE event collection.
- Controller Peer-to-Peer communicationSecure data exchange between multiple Tricon systems.
- Time synchronizationSupports SNTP, GPS and Triconex proprietary time synchronization to ensure unified system-wide clock.
- Comprehensive fault diagnosisReal-time monitoring of port status, communication quality and module health, with dual alerts via fault indicators and system alarms.
Typical Applications
- Remote monitoring of Emergency Shutdown Systems (ESD)
- Data integration between Fire & Gas (F&G) systems and DCS
- Safety interlocks in petrochemical, LNG, oil & gas transportation and power plant boilers
- Redundant networking of multiple Tricon controllers
- Centralized acquisition of Modbus instruments in industrial sites
- Offshore platforms, highly corrosive and strong electromagnetic interference industrial environments
- Long-distance, high-reliability safety communication
Model Comparison
| Model | Interface | System Version | Features |
|---|---|---|---|
| 4351B | Dual electrical ports RJ45 | v10.3+ | Copper Ethernet, short distance |
| 4352B | Dual fiber ports MT-RJ | v10.3+ | Fiber optic, long distance, high anti-interference |
| 4353 | Dual electrical ports RJ45 | v10.3+ | Built-in OPC server |
| 4354 | Dual fiber ports MT-RJ | v10.3+ | Fiber optic + built-in OPC server |
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