The Foxboro FCP280, identified by the factory part number RH924YA, is a high-performance, high-capacity field control processor designed for the Foxboro Evo and I/A Series distributed control systems (DCS). Operating as the centralized computational engine of the control station, the FCP280 executes advanced regulatory, data acquisition, timing, and sequential control logic. It interfaces directly with various Fieldbus Modules (FBMs) via redundant 2 Gbps fiber-optic or copper control networks, managing thousands of I/O points with ultra-low latency. Engineered for high-availability industrial architectures, the RH924YA processor supports full hardware redundancy, automatic fault isolation, and online configuration changes without process disruption, ensuring continuous control operation in mission-critical processing plants.
Product Specifications and Datasheet
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Manufacturer: Foxboro / Invensys / Schneider Electric
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Model Identifier: FCP280
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Factory Part Number: RH924YA
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System Platform: Foxboro Evo / I/A Series DCS
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Processor Type: High-speed, low-power industrial RISC microprocessor
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Memory Configuration: 128 MB flash memory for system software, 32 MB ECC RAM for active database and control logic
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I/O Capacity: Connects up to 128 Fieldbus Modules (FBMs)
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Network Interface: Redundant 100 Mbps Ethernet / 2 Gbps internal high-speed Fieldbus mesh network
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Scan Control Rate: Configurable down to 10 milliseconds (10ms minimum execution loop)
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Redundancy Capabilities: Supports hot-standby hardware redundancy with automatic bumpless transfer
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Enclosure Protection: Ruggedized metallic casing with IP20 classification for cabinet installation
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Operating Temperature Range: 0°C to +60°C (+32°F to +140°F)
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Storage Temperature Range: -40°C to +70°C (-40°F to +158°F)
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Relative Humidity: 5% to 95% non-condensing
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Physical Dimensions: 145 mm Height x 48 mm Width x 115 mm Depth
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Net Weight: 0.65 kg (1.43 lbs)
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Country of Origin: United States
Applications
The FCP280 field control processor is an essential automation asset utilized across severe and high-throughput processing industries. Within Petrochemical and Refining Plants, it manages continuous distillation loops, automated chemical blending, and thermal cracking units. In Power Generation Infrastructure, it regulates boiler control, turbine auxiliary monitoring, and burner management systems. Additionally, it is heavily relied upon in Pulp and Paper Mills to govern massive continuous digesters and paper machines, and in Water Treatment Facilities to coordinate localized filtration networks, multi-stage pumping arrays, and remote telemetry nodes.
User Instructions and Operation Guide
Installation, hardware pairing, and network provisioning must be executed exclusively by an automation specialist certified in Foxboro control platforms. The FCP280 processor must be handling-protected using standard anti-static techniques, such as a grounded ESD wrist strap, before removal from its packaging. The unit slides horizontally onto a dedicated FCP280 baseplate, pushing firmly until the top and bottom extraction levers lock into position against the backplane connector.
Connect the redundant fiber-optic or shielded copper mesh network cables to the appropriate communications ports on the baseplate assembly. Ensure that cable bend radiuses follow standard telecom rules to prevent signal loss across the high-speed data links. Verify that the dual 24 V DC power feeds to the baseplate are active and well within nominal tolerances.
Upon initialization, monitor the processor faceplate LEDs through its boot-up self-test. A solid green “READY” LED coupled with a green “ONLINE” status light indicates that the system software has loaded correctly and initialized communication with the master DCS database. Logic configuration, control block assignment, and GSD/FBM device mapping are handled within the Foxboro Control Software (FCS) suite or Foxboro Evo Engineering Environment. Never decouple a single active processor from the baseplate unless the companion redundant unit is verified in an active, error-free “M-Sync” (Master Synchronized) standby mode.
Frequently Asked Questions
Q: Does the FCP280 support hot-swapping if one processor fails in a redundant pair? A: Yes. In a redundant setup involving two FCP280 processors on a shared redundant baseplate, a faulty processor can be removed and replaced while the control station is live. The standby unit takes over control operations in a fraction of a millisecond with a bumpless transfer, ensuring no interruption to the physical field processes.
Q: What does a flashing yellow “DIAG” LED indicate on the module front panel? A: A yellow or red diagnostic indicator flashes when an internal hardware fault, memory error, or network communication timeout is detected. Maintenance teams should access the Foxboro system diagnostics tool to retrieve the precise error log code and isolate the failing connection.
Q: Can the FCP280 handle communication with legacy Foxboro I/A Series FBM modules? A: Yes. The FCP280 is designed for backward compatibility, allowing it to communicate with both newer Foxboro Evo FBMs and legacy I/A Series 100/200 series fieldbus modules through appropriate migration baseplates and interface hardware.
Product Industry News
As global manufacturing lines transition toward high-density data analytics and cloud-integrated operations, the optimization of edge control layers has become an industry priority. Production statistics show a strong, continuous requirement for high-throughput processor modules like the Foxboro FCP280 RH924YA unit. Facilities executing plant asset life-extension projects are choosing to swap out aging control processors rather than committing to full-scale, disruptive system migrations. This module-level modernization allows refineries, chemical plants, and power utilities to upgrade to 2 Gbps communications and advanced cybersecurity features while keeping their existing field wiring and I/O modules intact, saving millions in capital expenditure.
