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Product Overview

The Foxboro RH924WA (FCP280) serves as a high-performance Fiber Optic Network Adapter and Field Control Processor for the I/A Series Distributed Control System (DCS). This module executes complex real-time control strategies, logic, and sequencing while providing the physical interface for fiber-based network topologies. By utilizing a 64-bit RISC architecture, it offers double the processing capability of legacy controllers, ensuring deterministic performance for mission-critical applications in oil & gas, power generation, and chemical processing.

Technical Specifications

Parameter Details
Product Type Field Control Processor / Fiber Optic Adapter
Series Foxboro I/A Series
Part Number RH924WA
Processor 64-bit RISC Microprocessor
Memory Capacity 128 MB RAM, 32 MB Flash
Communication Dual Redundant 100 Mbps Ethernet Ports
Input Power 24 VDC Nominal
Redundancy Supports 1-for-1 Redundant FCP Configurations
Operating Temp –20 °C to +70 °C (–4 °F to +158 °F)
Isolation Fiber Optic Galvanic Isolation
Dimensions 127 × 51 × 178 mm (5 × 2 × 7 in)
Condition 100% Brand New Original

Engineering Advantages

  • Total EMI Immunity: The RH924WA utilizes fiber optic connectivity to eliminate electrical noise interference. This allows for long-distance signal transmission in high-voltage environments, such as power plant switchyards, without the risk of data corruption from electromagnetic fields.

  • Superior Processing Throughput: The 64-bit RISC engine handles high-density I/O arrays and complex PID loops with significantly lower scan times than the FCP270. This ensures tighter process control and faster response to plant transients.

  • Fault-Tolerant Architecture: Dual redundant Ethernet ports provide simultaneous communication paths. If a fiber link breaks or a network switch fails, the module automatically switches to the secondary path, maintaining continuous DCS visibility.

  • Enhanced Thermal Resilience: The industrial-hardened design operates reliably up to +70 °C. This makes the RH924WA suitable for remote instrument enclosures where environmental control may be limited.

  • Hot-Swappable Maintenance: Technicians can replace the module while the system remains energized. Internal diagnostics and status LEDs immediately verify the health of the new module, reducing Mean Time To Repair (MTTR).

FAQs

1. How does the RH924WA differ from the standard FCP280?

The RH924WA variant specifically incorporates fiber optic network adaptation capabilities. While it retains all the 64-bit processing power of the FCP280 series, it allows the DCS to utilize fiber optic cabling for the mesh network, providing superior isolation and distance over traditional copper.

2. Is this module 100% Brand New or refurbished?

We supply only 100% Brand New original Foxboro hardware. Each RH924WA module ships in its original factory packaging with a verified serial number and the manufacturer’s quality documentation.

3. Does the RH924WA require a specific baseplate?

Yes. The module must be installed in a Foxboro FBM baseplate designed to support FCP280 series processors. Ensure your baseplate supports the fiber optic interface connections required for the RH924WA.

4. Can I pair an RH924WA with an older FCP270 in a redundant set?

No. Redundant pairs must utilize identical hardware. To achieve a high-availability redundant configuration, you must install two RH924WA modules to ensure synchronized 64-bit processing and network failover.

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