Triconex 4351A TCM Communication Module in stock
Triconex 4351A is a TCM communication module for Tricon TMR safety instrumented systems under Schneider Electric. It serves as a high-reliability communication gateway to transmit safety data between Tricon SIS controller, HMI, DCS and other Tricon peer controllers.
This module comes with dual copper Ethernet ports and four serial ports with 500VDC galvanic isolation, supporting multiple industrial communication protocols. It is discontinued legacy spare, widely used for maintenance replacement of ESD and fire & gas safety control systems.
Main Specifications
| Item | Parameter |
| [1] Brand | Triconex (Schneider Electric) |
| [2] Model | 4351A |
| [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, SNTP |
Core Functions
| Function | Description |
| [1] Cross-system Data Gateway | Real-time safety data exchange between Tricon SIS, DCS, HMI and peer safety controllers. |
| [2] Multi-protocol Conversion | Supports Modbus and proprietary Tricon protocols for flexible interconnection. |
| [3] Electrical Isolation Protection | 500VDC isolation suppresses ground loop interference and surge damage. |
| [4] Online Communication Diagnostics | Detect link failures and report communication status to Tricon main processor. |
Application Scenarios
| Industry | Usage |
| [1] Oil & Gas | Network communication for offshore ESD and fire & gas monitoring systems. |
| [2] Chemical Industry | Interconnection between SIS safety system and DCS process control system. |
| [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 4351A? | 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 and SNTP time synchronization. |
| [3] What is the port isolation rating? | 500VDC galvanic isolation to protect against ground loop and electrical noise. |
| [4] Is Triconex 4351A discontinued? | Yes, it belongs to legacy spare parts for maintenance replacement of existing Tricon racks. |
