Triconex 4200 / REM 4200 Primary Remote Extender Module

The Triconex 4200 is a primary remote extender module designed for extending the I/O bus interface between the main chassis and remote expansion chassis in Tricon v10 safety-critical systems. The module operates using multi-mode fiber optic links running at a communication rate of 375 Kbaud to provide galvanic and ground loop isolation between system chassis. Interfacing via unidirectional transmit and receive cabling ports, the 4200 maintains triple modular redundant (TMR) system architecture while serving as a Class 1E to non-1E isolator between safety-related main chassis and non-safety expansion units.

Features

• Fiber optic multi-mode interface for remote chassis I/O expansion
• Ground loop isolation between primary and remote chassis
• Unidirectional transmit and receive cabling ports
• High immunity against electrostatic and electromagnetic interference
• Supports Class 1E to non-1E isolation applications

Applications

• Nuclear power plant safety-related control and protection systems
• High-availability emergency shutdown (ESD) systems
• Remote I/O chassis extension across long physical distances

Technical Specifications

Installation Guidelines

• Fiber Optic Cabling: Connect two fiber optic cables between each primary RXM (4200) and remote RXM (4201) pair; one cable dedicated to transmitting data from the primary to the remote module, and the second cable dedicated to receiving data from the remote module.
• Chassis Arrangement: Ensure three identical RXM modules are installed per chassis set to support the triplicated I/O bus structure.
• Isolation Applications: Utilize fiber optic connections to maintain physical and electrical isolation when linking Class 1E safety-related chassis to non-1E expansion chassis.

Compliance and Certifications

• EPRI TR-107330
• IEEE Std 323
• IEEE Std 384