Foxboro P0926MX Fiber‑Optic Splitter Combiner Module

The Foxboro P0926MX is a fiber‑optic splitter‑combiner unit for Foxboro I/A Series DCS control network. It implements optical signal splitting and combining for redundant controller communication links, enabling dual‑processor redundancy switching over fiber media without electrical signal interference.

This passive fiber module adopts compact metal housing with multiple LC‑type fiber interfaces. It provides high noise immunity for control network and supports seamless redundancy switching, widely installed in DCS cabinets of petrochemical, chemical and power‑generation industrial sites.

Main Specifications

• Brand: Foxboro; Model: P0926MX; Type: Fiber‑Optic Splitter Combiner Module
• Applicable System: Foxboro I/A Series Distributed Control System
• Core Tasks: Optical signal split/combine, redundant fiber link implementation, control‑network signal distribution
• Signal Interface: LC fiber ports for processor and switch connection
• Installation: Cabinet mounting inside DCS control cabinet
• Working Mode: Passive optical device, no external power supply required
• Operating Environment: ‑20℃ ~ +60℃, 5%‑95% RH non‑condensing, industrial anti‑vibration grade
• Mechanical: Compact metal enclosure, IP20 for cabinet‑internal installation
• Certifications: CE, complies with Foxboro DCS fiber network specifications

Core Functions

• Split and combine optical signals for dual redundant DCS processor communication links via fiber‑optic interfaces.
• Enable seamless redundant switching between primary and backup controllers to improve overall DCS network reliability.
• Passive optical structure needs no power input, lowering failure points for critical control‑network hardware.
• Isolate electromagnetic interference for long‑distance fiber transmission within plant‑wide DCS control network.
• Standard LC fiber connectors simplify on‑site fiber cabling and maintenance replacement work.
• Industrial‑hardened metal housing guarantees stable long‑term operation inside process‑industry control cabinets.

Application Scenarios

• Spare‑part replacement for Foxboro I/A Series DCS cabinets in petrochemical, chemical and power‑generation facilities.
• Fiber signal splitting hardware for redundant controller communication links of DCS control network.
• Maintenance backup inventory for renovation and after‑sales maintenance projects of legacy Foxboro DCS automation equipment.
• Matching fiber accessory cooperating with redundant controllers, fiber cables and DCS cabinet assemblies.
• Retrofit replacement for aged splitter‑combiner units with fiber link loss and signal transmission anomalies.

• Global aftermarket spare supply for automation maintenance teams maintaining Foxboro DCS industrial‑control equipment worldwide.