4210 (TRICONEX RXM Remote Expansion Module) Model: 4210 (Full Name: 4210-3) Brand: Triconex (Schneider Electric) System: Tricon v10/v11 Safety System (SIS/ESD) Type: Single-mode Fiber Remote Expansion Main Module (SRXM), TMR Triple Modular Redundancy, SIL3 ## I. Core Functions Remote I/O Expansion: Extend local rack I/O (AI/AO/DI/DO/Pulse) to remote sites up to **12 km (7.5 miles)** via optical fiber. Master Station Module: Installed in the Primary Chassis, deployed in sets of 3 (TMR), supporting connection to up to 3 remote sites. Fiber Optic Communication: Adopts single-mode optical fiber with ST interface and redundant links, featuring anti-interference capability, long transmission distance and high safety performance. ## II. Key Parameters ### 1. Communication & Distance Fiber Type: Single-mode Maximum Transmission Distance: 12 km (7.5 miles) Connector: ST (Fiber Optic) Maximum Number of Remote Sites: 3 Redundancy: Triple Modular Redundancy (TMR) + Dual Fiber Redundancy ### 2. Environmental & Mechanical Specifications Operating Temperature: -40℃ ~ +70℃ Power Supply: 24VDC Redundant Power Supply Certifications: SIL3, TÜV, FM, UL Diagnostic Indicators: PASS/FAIL/ACTIVE/TX/RX1/RX2/RX3 ### 3. Matching Modules Remote Slave Module: 4211-3 (Single-mode Fiber, for Remote Chassis) Multi-mode Fiber Version: 4200-3 (Master) / 4201-3 (Slave), maximum transmission distance of 2km ## III. Typical Applications Large-scale Chemical & Refinery Plants: Realize remote I/O collection and control for process areas far away from central control rooms. Oil & Gas Platforms: Long-distance fiber connection between offshore platforms and onshore control rooms. Power Plants & Power Stations: Remote signal access of boilers, steam turbines and auxiliary equipment to SIS. Safety Systems: ESD Emergency Shutdown System, BMS Burner Management System, F&G Fire and Gas System