Foxboro P0973CN I/A Series Expansion Baseplate

Description

The Foxboro P0973CN is a 4-position vertical DIN rail mounted expansion baseplate used in the Foxboro I/A Series DCS. It provides a dedicated hardware platform to house a fault-tolerant pair of FCP270 field control processors in two positions and a redundant pair of FEM100 fieldbus expansion modules in the remaining two positions. Operating on a passive backplane structure, the Foxboro P0973CN delivers high-reliability power routing and communication interconnections across the 2 Mbps Module Fieldbus. Mounting positions are specifically integrated onto the baseplate to accommodate fiber optic splitter/combiners required for fault-tolerant FCP270 processor operations.

Features

• Vertical DIN rail mounting configuration for standard enclosure layouts.
• Four dedicated module positions configured for two FCP270 processors and two FEM100 modules.
• Integrated mounting space for fiber optic splitter/combiners to support FCP270 redundancy.
• Dual primary and secondary 24 V dc power connections.
• Shielded twisted-pair Module Fieldbus interconnections operating at 2 Mbps.
• Hot-swappable module support allowing unit addition or replacement without disrupting active bus communication.
• Passive backplane architecture designed to maximize overall DCS operational reliability.

Applications

• Foxboro I/A Series DCS system expansion requiring additional 200 Series FBM fieldbus channels.
• High-density industrial automation control cabinets requiring fault-tolerant processing and fieldbus expansion.
• Continuous processing plant infrastructure utilizing DIN rail mounted hardware subsystems.

Technical Specifications

Connections/Interfaces

Installation Guidelines

• DIN Rail Mounting: Secure the baseplate to a non-isolated, mechanically supported vertical DIN rail using the designated fasteners.
• Power Cabling: Connect primary and secondary 24 V dc feed cables from the system power supply (such as FPS400-24, FPS240-24, or FPS120-24) to the primary and secondary power terminals.
• Fieldbus Interconnection: Use shielded twisted-pair cables for A/B Module Fieldbus daisy-chain connections between baseplates, maintaining a maximum total fieldbus length of 60 m (198 ft).
• Clearance: Ensure adequate enclosure clearance around the mounted baseplate to accommodate module insertion, removal, and field wiring clearance.
• Live Insertion: Baseplates can be connected or expanded without removing the system from service provided a redundant bus structure is in place.

Compliance and Certifications

• European EMC Directive: 89/336/EEC (EN 50081-2, EN 50082-2, EN 61326 Annex A)
• ISM Radio-frequency: CISPR 11 Class A
• Immunity: IEC 61000-4-2 (ESD), IEC 61000-4-3 (Radiated Field), IEC 61000-4-4 (EFT/Burst), IEC 61000-4-5 (Surge), IEC 61000-4-6 (Conducted), IEC 61000-4-8 (Magnetic Field)
• Product Safety: UL/UL-C listed for Class 1, Groups A-D, Division 2, T4 enclosure systems
• European Low Voltage Directive: 2006/95/EC
• ATEX Directive: 94/9/EC (CENELEC certified EEx n IIC for Zone 2)