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Foxboro RH924WA Fiber Optic DCS Communication Module

Configured for long-distance optical signal transmission in Foxboro I/A Series platforms, the Foxboro RH924WA (RH924WA Fiber Optic Network Adapter) provides direct physical/electrical execution.

Hardware Specifications

Parameter Specification
Model RH924WA
Brand Foxboro (Schneider Electric)
Origin USA
Weight 2.0 kg
Dimensions Standard FCP280 Plug-In Form Factor
Operating Temp 0 deg C to +60 deg C
Power Consumption Max 8.5 W (24 VDC Redundant Supply Supported)
Interface Type Fiber Optic Network Interface
Transmission Media Multi-Mode or Single-Mode Fiber Optic Cabling
Processor Compatibility FCP280 Control Processor
Onboard Memory 16 MB SDRAM, 32 MB Flash

FOUNDATION Fieldbus & Channel-to-Channel Isolation

The RH924WA provides complete optical channel-to-channel isolation by converting electrical fieldbus signals into light pulses, preventing ground loops and electromagnetic interference across extended DCS networks. The module interfaces with FCP280 control processors to maintain deterministic communication protocols across multi-mode and single-mode fiber links. Internal power regulation draws 24 VDC directly from the baseplate bus while isolating high-speed backplane signals from external field noise transients.

Frequently Asked Questions

Q: Can maintenance personnel perform hot-swap operations on the RH924WA module during active control processing?

A: Yes. Provided the FCP280 operates within a redundant dual-network architecture, replacing an RH924WA module will not disrupt live control logic or drop communication on the secondary redundant path.

Q: How does optical conversion via the RH924WA impact control signal latency across extended distances?

A: Onboard conversion circuitry processes optical signals with zero packet jitter, maintaining real-time deterministic communication between field processors and remote I/O sub-racks without introducing network transmission delays.

Field Installation Guidelines

Insert the RH924WA module into its designated baseplate slot until the rear connector seats firmly with the internal backplane bus. Secure all top and bottom retention screws to maintain physical contact and grounding path continuity. Clean optical fiber connectors with lint-free wipes and inspect ferrule end-faces prior to insertion into the module optical transceivers. Verify that minimum bend radius limits for fiber optic cables are strictly maintained inside wire ducts to prevent signal attenuation and optical power loss.

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