Description
Technical Specifications
- Product Model: 4351B
- Brand: TRICONEX
- Warranty: One Year
- Serial Ports: 4 × RS-232/RS-485 (DB-9 connectors, up to 115.2 Kbps each)
- Network Ports: 2 × Copper Ethernet 10/100 Mbps (RJ-45 connectors)
- Port Isolation: 500 VDC galvanic isolation
- Operating Temperature: 0°C to +60°C
- Power: Backplane-powered (Tricon chassis)
- Protocols: TriStation, Modbus TCP/RTU (functions 01-08,15,16), TCP/IP, ICMP, SNTP, TSAA (IP multicast), Peer-to-Peer UDP/IP
- Max Connections: 32 Modbus endpoints; 31 peer nodes per system
- Dimensions: Rack module; 3.18 kg
Product Overview
The TRICONEX 4351B is a copper Ethernet Tricon Communication Module (TCM) providing network connectivity for Tricon safety systems, bridging SIL 3 controllers to DCS, SCADA, and Modbus devices. Dual 10/100 Mbps RJ-45 ports plus four configurable serial ports support TriStation programming, Modbus Master-Slave operations, time synchronization (SNTP), and peer-to-peer communication across up to 31 nodes. Oil & gas, refining, and power engineers integrate it into ESD, Fire & Gas, and HIPPS networks where electrical isolation (500 VDC) rejects noise from adjacent high-voltage equipment. Comprehensive diagnostics via front-panel LEDs (PASS/FAULT/ACTIVE/FIRM/LINK/TX/RX) enable rapid troubleshooting, while hot-swappable installation maintains 99.999% availability. Up to four TCMs per system (two logical slots) handle diverse protocols without compromising TMR safety integrity. (148 words)
Key Functions
Dual Copper Ethernet Redundancy
Primary/backup 10/100 Mbps RJ-45 ports auto-failover during cable faults; supports Modbus TCP, TSAA multicast, and Peer-to-Peer UDP/IP protocols.
Flexible Serial Integration
Four independently addressed RS-232/RS-485 ports (Port 1: GPS; Port 4: TriStation); aggregate 460.8 Kbps Modbus RTU Master-Slave capacity.
Galvanic Noise Immunity
500 VDC port-to-system isolation prevents ground loops; essential for motor control rooms and substations with heavy electrical interference.
Network Health Monitoring
LINK/TX/RX LEDs per port plus module PASS/FAULT/ACTIVE/FIRM status feed Tricon diagnostics for predictive maintenance planning.
Application Scenarios
DCS Safety Interface
Refineries connect Tricon ESD to DeltaV/Experion DCS; Modbus TCP exchanges block status while serial ports interface legacy RTUs.
F&G Panel Networking
Offshore platforms link multiple Triconex nodes; TSAA multicast synchronizes time while Peer-to-Peer shares detector voting results.
Burner Management Historians
Power plants stream NFPA events via SNTP time sync to PI System; copper Ethernet spans control room distances reliably.
Remote HIPPS Stations
Gas plants communicate with distant cabinets; 32 Modbus endpoints support comprehensive proof test data exchange without fiber installation.
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