Description
The Foxboro P0928AY is a high-density, 16-channel analog input module designed for the Foxboro I/A Series® distributed control system (DCS), commonly used in power generation, refining, chemical processing, and water treatment facilities. It interfaces with standard industrial transmitters (4–20 mA or 1–5 V) and supports HART digital communication, enabling smart device integration without external multiplexers.
As part of the FBM207/208 I/O family, the P0928AY delivers high accuracy, galvanic isolation, and comprehensive diagnostics—ensuring reliable signal acquisition in mission-critical applications while supporting modernization efforts in aging I/A Series installations.
Application Scenario
At a Midwest U.S. combined-cycle power plant, operators faced recurring turbine vibration alarms caused by signal noise in legacy 8-channel analog cards. During a scheduled outage, the engineering team replaced these with Foxboro P0928AY modules across all bearing temperature and pressure monitoring loops. The new modules’ enhanced common-mode rejection and per-channel filtering eliminated false trips. More significantly, HART-enabled temperature transmitters now reported sensor health directly through the P0928AY, allowing predictive replacement of a failing RTD three weeks before it would have triggered an unplanned shutdown. The upgrade extended the I/A Series system’s life by 10+ years—without replacing the entire DCS.
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Technical Principles and Innovative Values
Innovation Point 1: True 16-Channel Density Without Compromise
Unlike earlier 8-channel modules, the P0928AY doubles I/O density in the same footprint—reducing cabinet space, wiring costs, and spare inventory. Despite higher density, each channel retains full 16-bit resolution and independent signal conditioning.
Innovation Point 2: Native HART Integration Eliminates External Hardware
The P0928AY includes built-in HART demodulation circuitry, allowing the I/A Series system to communicate directly with smart transmitters for calibration, diagnostics, and configuration—streamlining asset management and reducing lifecycle costs.
Innovation Point 3: Advanced Diagnostics for Operational Resilience
Each channel continuously monitors signal integrity. Faults such as broken wires, short circuits, or transmitter drift are flagged in real time and logged in the I/A Series historian—enabling proactive maintenance and faster troubleshooting.
Innovation Point 4: Future-Proofing Legacy DCS Installations
While designed for I/A Series, the P0928AY is fully supported in modernized systems using Foxboro Evo or Schneider Electric’s EcoStruxure™ migration paths—protecting existing automation investments while enabling digital transformation.
Application Cases and Industry Value
Refinery in Texas: Deployed P0928AY modules across 12 distillation columns to monitor tray temperatures. The improved signal fidelity reduced column upsets by 30%, saving ～ $ 220K/year in yield loss.
Municipal Water Plant (Europe): Used P0928AY with HART-enabled pH and ORP sensors to automate chemical dosing. Real-time sensor diagnostics cut reagent waste by 18% and ensured regulatory compliance.
Nuclear Facility (Asia): Selected P0928AY for its high EMC immunity and TÜV-recognized reliability in safety-related monitoring (non-SIL, but high integrity).
Related Product Combination Solutions
FBM207 / FBM208 Baseplate: Required carrier for P0928AY installation in I/A Series I/O packs.
P0928BY: Analog output counterpart (16-channel, 4–20 mA).
P0916NG: Digital input module; often co-installed with P0928AY in hybrid racks.
I/A Series Workstation (e.g., AW510): Engineering and operator interface for configuration and monitoring.
HART Communicator (e.g., AMS Device Manager): Integrates with P0928AY for advanced device management.
Redundant FBM207R: For critical applications requiring I/O redundancy.
Foxboro Evo Migration Kit: Enables seamless transition from legacy I/A to modern architecture while retaining P0928AY modules.
Schneider Electric EcoStruxure Process Expert: Next-gen DCS that can integrate I/A Series I/O via gateways.
Installation, Maintenance, and Full-Cycle Support
The Foxboro P0928AY installs into an FBM207/208 baseplate with simple slide-in mounting. Field wiring connects to removable terminal blocks, and configuration is performed via I/A Series Composer or Control Display Builder. HART devices are auto-detected and appear in the asset tree.
Maintenance is simplified by LED indicators (green = normal, red = fault) and remote diagnostics accessible from any operator console. Failed modules can be hot-swapped during operation—configuration is automatically restored from the controller.
We supply only factory-new or refurbished-tested P0928AY units with full functionality verification, including HART loop testing. All modules come with compatibility assurance for I/A Series versions v6.x through v9.x, and we provide obsolescence planning support to extend your system’s operational life.
Contact us for genuine Foxboro P0928AY modules, technical validation, or migration strategy—whether you’re maintaining a legacy plant, expanding capacity, or integrating smart instrumentation. With the P0928AY, your I/A Series system stays accurate, intelligent, and ready for the future.
