TRICONEX 4352B TCM (Tricon Communication Module) Triple Modular Redundant Communication Interface Module

Triconex 4352B is a dedicated TCM communication module designed for Schneider Tricon TMR safety instrumented system (SIS), upgraded version of legacy 4352A.

 It acts as the external communication gateway for Tricon main controller, realizing bidirectional data exchange between Tricon safety logic controller and external HMI, DCS, SCADA,

 engineering workstation, third-party PLC and field intelligent instruments.

Adopting inherent triple modular redundancy architecture consistent with Tricon system, three independent communication channels perform data voting processing simultaneously; 

single-channel hardware failure will not interrupt overall communication operation. It supports multiple mainstream industrial communication protocols, completes protocol conversion, 

data packaging & unpacking, link fault diagnosis, ensuring stable real-time interaction of safety interlock signals, process variables, alarm & event logs. It is an essential maintenance 

spare part for ESD emergency shutdown, BMS burner management, F&G fire & gas detection safety system retrofitting and troubleshooting.

Technical Specifications

Part Number: 4352B

Manufacturer: Triconex (Schneider Electric)

Product Type: Tricon Communication Module (TCM)

System Compatibility: Tricon CX / EX / Classic Tricon SIS System, TriStation 1131 programming software

Communication Interfaces: Dual 10/100Mbps Ethernet ports, Dual RS232/RS485 serial ports

Supported Protocols: Modbus TCP/IP, Modbus RTU, TriStation proprietary protocol, OPC, serial customized protocol

Architecture: Triple Modular Redundancy (TMR), three-channel independent operation & voting

Hot-Swap Support: Yes, replaceable online without system shutdown

Power Supply: Backplane 24VDC power supply, typical power consumption 12W

Diagnostic Indicators: Front panel LED indicators for RUN, FAULT, LINK, TX/RX status

Max Quantity Per Chassis: Up to 8 pieces per Tricon main rack

Operating Temperature: -20℃ ~ +60℃

Storage Temperature: -40℃ ~ +85℃

Humidity: 5%–95% non-condensing

Protection Class: IP20 (cabinet internal installation)

Safety Certification: IEC 61508 SIL3, CE, UL

Origin: USA

Net Weight: Approx. 0.62kg

Key Features

Native TMR triple redundant design, fault-tolerant communication, automatic isolation of single-channel fault to avoid total communication breakdown.

Dual Ethernet + dual serial port configuration, supports redundant communication wiring to improve link reliability for critical safety loops.

Comprehensive built-in self-diagnosis: real-time monitoring of link disconnection, data error, module hardware abnormality, with fault alarm output.

Hot-swappable design, online replacement shortens equipment maintenance downtime without stopping safety system operation.

Powerful protocol conversion capability, seamless interconnection between Tricon SIS and mainstream DCS brands (Honeywell, ABB, Siemens, Yokogawa).

Conformal coated PCB anti-vibration & anti-electromagnetic interference design, stable operation in complex electromagnetic environment inside industrial control room cabinets.

Firmware upgradable via engineering workstation, compatible with new & old generation Tricon system versions for system expansion & renovation.