Product Core Brief
- Model: FCM2F2 (Associated Part: RH914YZ / P0914YZ)
- Brand: FOXBORO (Invensys / Schneider Electric)
- Series: I/A Series / Compact 200 Series DCS
- Core Function: Extends the module fieldbus up to 2 kilometers via fiber optics, immune to electrical noise and EMI.
- Product Type: Fiber Optic Communication Module / Bus Extender
- Key Specs: 2 km Distance | Multimode Fiber | Hot-Swappable | Redundancy Capable
- Condition: New Original / New Surplus
FOXBORO FCM2F2
Product Introduction
FOXBORO is a specialized fiber optic communication extender designed for the I/A Series and Compact 200 Series distributed control systems. It serves as a critical bridge for remote I/O expansion, allowing 200-series fieldbus modules to be installed up to 2 kilometers away from the main control station.
This industrial automation unit translates electrical fieldbus signals into optical signals, providing complete galvanic isolation. This makes it highly resistant to electromagnetic interference (EMI), radio frequency interference (RFI), and lightning strikes, ensuring reliable communication in harsh environments near rotating machinery, high-voltage cables, or outdoor areas.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Module Type | Fiber Optic Bus Extender |
| System Compatibility | Foxboro I/A Series / Compact 200 Series |
| Max Extension Distance | 2 Kilometers (1.24 Miles) |
| Fiber Type Required | Multimode, Graded-Index (62.5/125 µm) |
| Connector Type | ST Connectors |
| Optical Wavelength | 850 nm / 1300 nm |
| Environmental Rating | G3 Class (Harsh Environment) |
| Mounting | Standard Baseplate (Adjacent Slots for Redundancy) |
| Hot-Swap | Supported (No power-down required) |
| Diagnostics | 6 Front-Panel LEDs for Network/Link Status |
Quality Control Process
We validate every FOXBORO before shipment to ensure operational readiness:
- Visual & Physical Inspection: ST optical ports, backplane connectors, and front-panel LEDs are inspected for physical damage, dust, or oxidation.
- Functional Test: Modules are powered up in a test rack to verify LED status indicators and backplane communication handshake.
- Signal Verification: Optical transmission and reception are tested using calibrated light sources and power meters to ensure signal loss remains within specifications (< 3.6 dB/km at 850 nm).
- Cleaning & Packaging: Optical ports are cleaned, and units are anti-static shielded and desiccant-packed to prevent moisture damage during transit.
Replacement Pitfall Guide
❗ Fiber Type Mismatch: The strictly requires multimode graded-index fiber (62.5/125 µm). Do not use single-mode fiber, which is only compatible with the FCM2F10 model. Using the wrong fiber type will result in complete communication failure.
❗ Cable Connector Verification: This module requires fiber cables terminated with ST-type connectors. Ensure your custom or pre-terminated fiber patch cables match this specification.
❗ Redundancy Installation Rules: For a redundant fiber optic link, modules must be installed in pairs. Furthermore, redundant FCMs must be mounted in the first or last adjacent slots on the baseplate.
❗ Matching Types at Both Ends: The modules at both ends of a single fiber optic cable segment must be of the exact same type. Never mix , FCM2F4, and FCM2F10 on the same link.
FOXBORO FCM2F2
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor | Compatibility Level | Migration Notes |
|---|---|---|---|
| (RH914YZ) | Direct | Verify exact hardware revision | |
| FCM2F4 (RH917JA) | Needs Adaptation | FCM2F4 supports 4 km; must match at both ends | |
| FCM2F10 (RH916TQ) | Needs Adaptation | FCM2F10 supports 10 km (Single-mode); different fiber type | |
| FCM10E / FCM10EF | Needs Adaptation | Different form factor / Ethernet conversion module |
- Lead Time: Typically 1-3 weeks for surplus stock; 4-8 weeks for new factory orders.
- Warranty: Standard 12-month functional warranty.
