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Foxboro RH924YA FCP280 Field Control Processor Module

Configured for high-speed process execution in Foxboro Evo and I/A Series DCS networks, the Foxboro RH924YA (FCP280 Field Control Processor Module) provides direct physical/electrical execution.

Hardware Specifications

Parameter Specification
Model FCP280 (RH924YA)
Brand Foxboro by Schneider Electric
Origin USA
Weight 0.65 kg (Net) / 3.0 kg (Shipping)
Dimensions 114 mm x 51.5 mm x 147 mm
Operating Temp -40 deg C to +70 deg C
Power Consumption 10 W typical
Processor Type 64-bit RISC CPU
Volatile Memory 256 MB SDRAM
Non-Volatile Memory 128 MB Flash
I/O Support Up to 64 Fieldbus Modules (FBMs)
Network Interface 100 Mbps Fiber Optic Ethernet
Input Voltage 24 VDC +/-15%
Compliance IEC 61508, CE, UL

Process Control & DCS Network Performance

The processor manages data transmission across 100 Mbps fiber optic interfaces, eliminating electrical ground paths and maintaining signal integrity under severe high-voltage surges. Integrated conditioning hardware supports continuous 4-20 mA HART loop protocol parameters and FOUNDATION Fieldbus / Profibus PA connectivity across connected fieldbus modules. High channel-to-channel isolation paired with cold junction compensation (CJC) processing maintains accuracy across remote temperature inputs without degrading control loop cycle timing.

Frequently Asked Questions

Q: Can an engineer replace an older FCP270 processor with the RH924YA module?

A: Yes, the RH924YA serves as an evolutionary path for the FCP270, though system software versions must be verified to ensure full support for the expanded 64-FBM addressing space.

Q: How does the RH924YA module maintain control logic parameters during a complete power loss?

A: Non-volatile 128 MB flash memory retains the complete control configuration and operating system, enabling immediate execution upon restoration of 24 VDC power feeds.

Q: What mechanisms ensure uninterrupted execution during a power feed failure?

A: Dual 24 VDC input terminals allow the module to draw power simultaneously from redundant power supply units, ensuring seamless operation if one feed fails.

Field Installation Guidelines

Mount the RH924YA module securely onto its dedicated baseplate slot, engaging the retaining clips to ensure complete backplane grounding and bus connectivity. Connect dual independent 24 VDC power sources to the terminal assembly to establish supply redundancy. Inspect all fiber optic cable ends for debris and respect standard minimum bend radii when dressing cables to safeguard light signal transmission. Fasten a heavy-gauge grounding strap from the baseplate to the cabinet ground bar to prevent ground potential differences from affecting module operation.

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