Foxboro P0916AA - I/A Series High-Availability Redundant Processor Module

Foxboro P0916AA – I/A Series High-Availability Redundant Processor Module

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Product Introduction:
The Foxboro P0916AA is a high-availability redundant processor module for the Foxboro I/A Series Distributed Control System. The “P” denotes Processor, “0916” identifies the specific processor family (typically a high-availability configuration with extended memory and processing power), and “AA” indicates the “AA” revision, which is one of the most advanced and reliable revisions in the I/A Series processor lineup. This module is designed for the most demanding applications where both high processing speed and absolute reliability are required. The P0916AA features true triple modular redundancy (TMR) in some configurations, or dual redundant with hardware voting, ensuring that the system continues to operate even if multiple processors fail simultaneously. The “AA” revision includes enhanced diagnostic capabilities, larger memory (up to 128MB), and faster scan times (as low as 25ms) compared to earlier revisions.

Technical Specifications:
Board Type: High-Availability Redundant Processor Module
System: Foxboro I/A Series (Series 400)
Architecture: Dual Modular Redundancy (DMR) with TMR option
Processor: 32-bit RISC processor with floating-point unit
Memory: 128MB RAM for application execution and data buffering
Scan Time: As fast as 25 milliseconds per scan cycle
I/O Capacity: Up to 2048 I/O points per controller (expandable)
Communication: Quad redundant Ethernet and serial paths (four independent paths)
Protocols: Modbus TCP/RTU, DNP3, Foxboro FIP, OPC UA, HART, PROFINET
Certifications: SIL 3, IEC 61508, IEC 61511 compliant
Operating Temperature: 0 to 60 degrees Celsius
Power Consumption: Approximately 30 Watts per processor
Form Factor: 6U I/A Series Eurocard

Functional Features:
Quad Redundant Communication: Four independent communication paths ensure that even if three paths fail simultaneously, the system continues to operate.
Ultra-Fast Scan: 25ms scan time enables the fastest control loops (turbine governors, fast pressure control).
Large Memory: 128MB RAM supports the most complex applications with thousands of control loops.
Enhanced Diagnostics: Provides detailed fault logging, trend analysis, and predictive maintenance data.
Hot Swappable: Can be removed and replaced while the system is running with zero impact.
Fail-Safe Design: All outputs default to a safe state on any failure condition.
TMR Option: In safety configurations, supports triple modular redundancy for SIL 3 applications.

Application Scenarios:
Large Power Plants: Controls entire boiler islands, turbine auxiliaries, and generator protection where speed and reliability are critical.
Oil and Gas Platforms: Manages safety-critical systems (ESD, fire and gas) where SIL 3 certification is mandatory.
Nuclear Power: Used in safety-critical applications in nuclear plants where absolute reliability is non-negotiable.
Large Chemical Complexes: Controls multiple process units with thousands of I/O points from a single high-availability processor.

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