Description
- Model: FOXBORO FCP280 (RH924YA)
- Brand: FOXBORO / Schneider Electric (USA)
- Series: I/A Series / EcoStruxure Foxboro DCS
- Core Function: High-performance Field Control Processor executing control logic and communication.
- Condition: Brand New Surplus (Original New), No Refurbished Units.
- Product Type: Field Control Processor (FCP)
- Key Specs: Supports Fault-Tolerant Redundancy | 2 Gbps Internal Fiber Optic Comms.

FOXBORO FCP280 RH924YA
Key Technical Specifications
- Processor Architecture: High-speed RISC Processor
- Communication Interface: Redundant 100 Mbps / 1 Gbps Ethernet
- Internal Bus: High-speed Fiber Optic HDLC Bus
- Input Voltage: 24 V DC (Supplied via baseplate)
- Maximum I/O Capacity: Handles up to 128 FBM (Field Bus Modules)
- Operating Temperature: 0°C to +60°C (32°F to 140°F)
- Enclosure Rating: IP20
- Memory: 128 MB SDRAM / 128 MB Flash
- Redundancy Switchover: < 10 ms (Bumpless transfer)
- Protocol Support: FoxNet, Fieldbus Foundation, Profibus
- Compliance: Class 1, Division 2 (Hazardous Location Certified)

FOXBORO FCP280 RH924YA
Installation & Configuration Guide
Replacing an FCP280 is a high-stakes task because it acts as the “brain” of the DCS. To be blunt: if you mishandle the communication link to the underlying FBMs, you risk a total plant trip.
Phase 1: Pre-Installation (Est: 15 mins)
⚠️ Safety First:
- Coordinate with the shift supervisor; ensure the redundant partner (if applicable) is in “OK” status.
- Wear an anti-static wrist strap. I’ve seen backplane pins fried by static—that’s a five-figure mistake.
- Critical Step: Log into FoxView/System Manager and trigger a manual Checkpoint backup.
Phase 2: Removal & Installation (Est: 10 mins)
- Verify Model: Double-check the label on the new module for RH924YA—it must match the existing unit exactly.
- Set the Letterbug: Locate the character dials (Letterbug) on the side or bottom. This defines the processor’s ID in the system. Set it exactly like the old unit (e.g., A01).
- Vertical Insertion: Align the module with the baseplate guide rails and push firmly. You should hear a distinct “click” as the connectors lock.
Phase 3: Power-On & Synchronization (Est: 20 mins)
- After power-up, watch the LEDs. They will cycle during initialization—don’t panic until they stabilize.
- Load Software: Use the I/A Series software to perform “Download OS” and then “Load Application.”
- Validation: Check System Manager. If it shows “Primary/Backup” without red Xs, the synchronization is successful.

FOXBORO FCP280 RH924YA
Customer Cases & Industry Applications
Case 1: Chemical Plant Controller Failure – 30-Hour Recovery Background: A major chemical facility in East Asia running an I/A system for over 10 years. A main FCP280 suddenly failed its hardware self-test (Red ERR light), causing half the plant’s I/O to lose control. Task: The manufacturer quoted a 14-week lead time for this obsolete part. Daily production losses were estimated at $120,000 USD. Action: We were contacted at 4 PM. We pulled the RH924YA from our stock, completed a 24-hour load test, and shipped it via express courier. Result: The part arrived the next morning. Plant engineers followed our Letterbug configuration guide, and the system was fully automated by 4 AM the following day. Total downtime was under 36 hours instead of months.
Case 2: Offshore Platform Preventive Maintenance Background: An offshore oil platform where the environment (salt spray/vibration) ages electronics rapidly. Task: Maintenance noted increasing error logs on their FCPs. Logistics to sea are slow; a failure would require a helicopter transport costing more than the part itself. Action: We advised the client to purchase 4 New Surplus RH924YA units as strategic “Buffer Stock” during their annual turnaround. Result: This “insurance policy” paid off. During a 2025 inspection, two aging units showed signs of capacitor degradation. They were replaced instantly from the platform’s own inventory, avoiding an emergency shutdown.
Frequently Asked Questions (FAQ)
Q: The FCP280 (RH924YA) is discontinued; where does your stock come from? A: Great question. While Schneider pushes for newer versions, a market for “New Surplus” exists. Our stock comes from project cancellations, authorized inventory liquidations, or strategic long-term buys. We can provide serial numbers for you to verify the production batch with Foxboro to ensure these aren’t salvaged units.
Q: My current model is RH924BJ. Is this RH924YA a direct replacement? A: Be careful here. While they are both FCP280s, the suffix denotes different hardware revisions or pre-loaded firmware. Generally, higher revisions are backward compatible, but it may require software configuration. Send me your current system software version, and I’ll have my tech team run a compatibility check for you.
Q: If the module doesn’t work after installation, can I return it? A: We offer a 12-month warranty. If there is a hardware defect, we offer a 7-day no-hassle return. However, “not working” is often a Letterbug mismatch or firmware conflict. We offer remote video support to help you troubleshoot before deciding on a return.
Q: Why is your price higher than the used units on eBay? A: Honestly? You can buy a used unit for a fraction of the cost, but would you trust your multi-million dollar plant to a part with unknown history? Refurbished units have capacitors nearing the end of their life. We sell “Peace of Mind.” This New Surplus unit is designed to give you another 10+ years of stability, whereas a used unit might fail in 3 months. The ROI on reliability is clear.
