WhatsApp: +86 16626708626
Email: 
Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Value / Specification |
| Manufacturer | Foxboro / Invensys (Schneider Electric) |
| Part Number | RH924UQ (FCP280 Series) |
| Module Type | Field Control Processor (DCS Main Controller) |
| Processor Architecture | 32-bit RISC Engine (133 MHz) |
| Memory Capacity | 64 MB DRAM, 128 MB Non-Volatile Flash Memory |
| Network Interfaces | Dual 10/100 Mbps Ethernet (Copper/RJ45), Profibus DP, Serial |
| I/O Capacity | Supports up to 128 Fieldbus Modules (100 & 200 Series FBMs) |
| Redundancy Support | Hardware Fault-Tolerant (1:1 Active/Standby Failover) |
| Operating Voltage | Dual 24 V DC Inputs (Redundant) |
| Power Consumption | 11 W maximum single unit / 20 W fault-tolerant pair |
| Environmental Rating | Harsh environment G3 conformal coating (−20 to +60°C) |
Product Introduction & Supply Chain Strategy
The Foxboro RH924UQ (FCP280) is a high-performance Field Control Processor engineered for continuous, mission-critical process automation in Foxboro I/A Series and EcoStruxure Distributed Control Systems. It manages real-time PID loops, sequential batch logic, and high-density I/O communication with sub-100 ms deterministic execution times across oil refining, power generation, and chemical processing plants.
Maintaining a verified New Surplus RH924UQ controller in your strategic spares buffer ensures instant recovery during CPU hardware faults. Refurbished or pulled control processors carry inherent risks of thermal stress on onboard Flash memory, dried power supply capacitors, and unstable real-time clock synchronization. Deploying factory-clean New Surplus hardware eliminates unexpected logic execution freezes and protects your facility against costly plant-wide shutdowns.
Installation & Configuration Guide
1.Pre-Installation (Prep & Safety):Perform software backup and verify ESD safety.
Upload and save the complete control database and block configuration from the active controller using the engineering workstation. Isolate power feeds following lock-out/tag-out (LOTO) safety protocols. Put on an ESD wrist strap grounded to the enclosure frame before handling the RH924UQ module.
2.Removal of Legacy Controller:Disconnect copper communications and release baseplate latches.
Label and disconnect all copper RJ45 Ethernet cables and serial communication lines. Unlatch the upper and lower retaining clips on the FBM200/210 series baseplate. Pull the module lever outward to disengage the rear connectors smoothly from the backplane without twisting.
3.Hardware Configuration & Insertion:Verify hardware switches and seat into backplane.
Confirm that the DIP switch configurations and system node IDs match the target slot parameters. Align the RH924UQ card edges with the baseplate guide tracks and push the module firmly until the locking levers snap into place, ensuring complete connector engagement.
4.Power-On & Logic Download:Verify startup diagnostic LEDs and sync redundant pair.
Reapply 24 V DC backplane power. Observe the diagnostic status LEDs: the power LED should glow solid green while the CPU status cycles from BOOT to ONLINE. If replacing a unit in a redundant pair, verify through the system monitor that hardware state synchronization completes without sync errors.
RH924UQ
RH924UQ
Firmware/Software Versions & Upgrade Notes
- System Compatibility: Compatible with Foxboro I/A Series System Software Release 8.0 and higher, as well as EcoStruxure Foxboro DCS platforms.
- Redundancy Pairing: When operating in a fault-tolerant dual-processor pair, both RH924UQ modules must run identical firmware build numbers.
- Firmware Upgrade Warning: Mismatched firmware builds between primary and standby processors will prevent state memory synchronization and disable automatic failover. Always verify baseline firmware revisions prior to hot-swapping or replacing active processing units.
Frequently Asked Questions (FAQ)
What is the exact difference between New Surplus and a refurbished ?
Our New Surplus units are uncommissioned, original factory hardware sourced from project reserves. Unlike refurbished units—which are used parts cleaned externally—New Surplus stock has zero operational hours, zero backplane pin wear, and 100% remaining component lifespan.
Is the Foxboro hot-swappable during live operations?
Yes. When installed in a redundant baseplate configuration, an controller can be replaced while the system is live. The partner controller maintains active process control while the replacement module powers up and synchronizes state memory automatically.
Why is buying refurbished control processors a high risk for DCS operations?
Main processor modules contain high-density surface-mount components, Flash memory, and high-frequency oscillators. Refurbished modules frequently suffer from thermal fatigue that causes intermittent memory corruption, leading to silent loop lockups or false emergency shutdowns under high CPU loads.
Does the require manual program loading after installation?
When replacing a secondary module in a redundant pair, the controller automatically downloads the current control strategy from the primary unit. In a standalone setup, the logic database is downloaded directly from the engineering workstation upon boot.
What interface ports are built directly into the ?
The features dual 10/100 Mbps copper Ethernet ports for control network communication, native Profibus DP support, and dedicated serial communications for field device integration.
What warranty is provided with this New Surplus controller?
We cover every New Surplus Foxboro module with a comprehensive 1-year replacement warranty, giving you absolute procurement confidence and operational peace of mind.
