Products Description
Triconex 4211 RXM Secondary Remote Extender Module

Technical Specifications
Model:4211
Brand:Triconex
Product Type:RXM secondary remote extender module
Fiber Type:Single‑mode optical fiber
Fiber Connector:ST type,6 fiber ports
Transmission Rate:375Kbps,synchronized with Tricon I/O bus
Max Transmission Distance:12000m(12km)
Match Device:Works with 4210 primary module,one 4210 supports up to three 4211 remote racks
Architecture:2‑out‑of‑3 TMR triple modular redundant internal link
Safety Level:SIL3 IEC61508 TÜV certified
Indicator:Front‑panel PASS,FAULT,LINK,TX,RX status LED
Power Consumption:<10W,backplane powered
Feature:Hot‑swap supported,complete link diagnostic,optical isolation between main‑rack and remote‑rack
System Compatibility:Tricon Classic SIS v9/v10/v11;occupies two adjacent slots on remote rack
Remark:Must pair with host‑rack 4210 primary module;legacy EOL spare component
Module Form:Standard rack plug‑in module
Weight:1.55 kg
Dimension:490 mm×453 mm×68 mm
Protection Grade:IP20
Certification:SIL3,TÜV,CE
Working Temperature:‑40℃ ~ +70℃,non‑condensing
Storage Temperature:‑40℃ ~ +85℃
Humidity:5%‑95% non‑condensing
Application:Petrochemical,off‑shore platform,oil & gas,power plant SIS safety system,installed on remote I/O cabinet,receive fiber signal from 4210,realize long‑distance I/O expansion,reduce instrument cable cost,system maintenance and spare‑part replacement.

Product Details
4211 is RXM secondary remote extender module for Triconex Tricon Classic SIS safety instrumented system. It is installed on remote expansion rack and must pair with 4210 primary module on main rack.
Adopts single‑mode ST fiber to receive Tricon I/O bus signal transmitted from host side,realizes TMR redundant long‑distance communication,maintains SIL3 safety integrity between main‑rack and remote‑rack,max transmission distance 12km,suitable for offshore platforms and large chemical plants.
Hot‑swap design allows module replacement without SIS system shutdown. Front‑panel multi‑LED indicates module running,fault,optical sending‑receiving and link status,with full link fault diagnosis function. One 4210 primary module can drive up to three sets of 4211 remote racks.
Note:This is legacy EOL spare component,widely used for safety system spare‑part replacement.