Triconex 4351B TCM Communication Module in stock
Triconex 4351B is a TCM high-performance communication module for Tricon TMR safety instrumented systems under Schneider Electric. It acts as the communication gateway, realizing real-time data interaction between Tricon SIS controller, HMI, DCS and other Tricon peer controllers.
This module is equipped with dual Ethernet and multi serial ports with 500VDC galvanic isolation, supporting multiple industrial protocols. It belongs to discontinued legacy spare, widely used for maintenance replacement of ESD and fire & gas safety systems.
Main Specifications
| Item | Parameter |
| [1] Brand | Triconex (Schneider Electric) |
| [2] Model | 4351B |
| [3] Product Type | TCM Communication Module |
| [4] Ports | 2×10/100Mbps Ethernet,4×RS232/RS485 Serial |
| [5] Isolation | 500 VDC port-to-port galvanic isolation |
| [6] Supported Protocols | Modbus TCP/RTU, TriStation, Peer-to-Peer, TSAA |
Core Functions
| Function | Description |
| [1] Cross-system Data Gateway | Transmit safety data between Tricon SIS, DCS, HMI and other safety controllers. |
| [2] Multi-protocol Conversion | Supports Modbus and proprietary Tricon protocols for flexible interconnection. |
| [3] Electrical Isolation Protection | 500VDC isolation prevents ground loop and surge damage to safety rack. |
| [4] Online Diagnostics | Detect communication link faults and report status to Tricon controller. |
Application Scenarios
| Industry | Usage |
| [1] Oil & Gas | Data communication for offshore ESD and fire & gas monitoring systems. |
| [2] Chemical Industry | SIS and DCS interconnection for chemical process safety interlock units. |
| [3] Power Generation | Turbine protection system data exchange with plant HMI and control network. |
| [4] Legacy System Maintenance | Spare communication module replacement for aging Tricon safety racks. |
FAQ
| Question | Answer |
| [1] What is Triconex 4351B? | It is TCM communication gateway module for Tricon TMR SIS safety instrumented system. |
| [2] What protocols does it support? | Modbus TCP/RTU, TriStation, TSAA, peer-to-peer communication protocols. |
| [3] What is the isolation rating? | 500VDC galvanic isolation between ports to avoid ground loop interference. |
| [4] Is Triconex 4351B discontinued? | Yes, it is legacy spare for maintenance replacement of existing Tricon racks. |
