FCM2F2
Model: FCM2fF2 (VPariants: FCM2F2, FCM2F4, FCM2F10t Number: RH914YZ) | Brand: Foxboro (Schneider Electric) | Type: I/A Series Fieldbus Communication Extender Module | Function: Serves as a fiber optic communication extender for fieldbus, extending the distance between baseplates up to 2 km, allowing remote installation of 200-series FBM modules near factory processes. It supports redundant pairing use and is immune to electrical noise, providing reliable signal communication extension. It uses multi-mode graded-index glass fiber (62.5/125 µm core/cladding, 0.275 NA) with ST-type connectors.
1. Technical Specifications
The FCM2f series includes three variants with different maximum fiber optic distances: FCM2F2 (RH914YZ) up to 2 km, FCM2F4 (RH917JA) up to 4 km, and FCM2F10 (RH916TQ) up to 10 km. It features a rugged extruded aluminum housing, complying with ISA standard S71.04 and providing up to Class G3 (harsh environment) protection. The module supports hot-swap replacement without power interruption, with six front-panel LED indicators for real-time monitoring of network activity and module operation status. For fiber optic requirements: FCM2F2 and FCM2F4 use multi-mode graded-index glass fiber (62.5/125 µm core/cladding, 0.275 NA) with ST-type connectors; FCM2F10 uses standard single-mode fiber with ST-type connectors. The maximum allowable signal loss is 1 dB/km at 1300 nm and 3.6 dB/km at 850 nm for multi-mode fiber. It operates on a stable power supply, with a compact design suitable for standard baseplate installation.
Description
Model: FCM2fF2 (VPariants: FCM2F2, FCM2F4, FCM2F10t Number: RH914YZ) | Brand: Foxboro (Schneider Electric) | Type: I/A Series Fieldbus Communication Extender Module | Function: Serves as a fiber optic communication extender for fieldbus, extending the distance between baseplates up to 2 km, allowing remote installation of 200-series FBM modules near factory processes. It supports redundant pairing use and is immune to electrical noise, providing reliable signal communication extension. It uses multi-mode graded-index glass fiber (62.5/125 µm core/cladding, 0.275 NA) with ST-type connectors.
1. Technical Specifications
The FCM2f series includes three variants with different maximum fiber optic distances: FCM2F2 (RH914YZ) up to 2 km, FCM2F4 (RH917JA) up to 4 km, and FCM2F10 (RH916TQ) up to 10 km. It features a rugged extruded aluminum housing, complying with ISA standard S71.04 and providing up to Class G3 (harsh environment) protection. The module supports hot-swap replacement without power interruption, with six front-panel LED indicators for real-time monitoring of network activity and module operation status. For fiber optic requirements: FCM2F2 and FCM2F4 use multi-mode graded-index glass fiber (62.5/125 µm core/cladding, 0.275 NA) with ST-type connectors; FCM2F10 uses standard single-mode fiber with ST-type connectors. The maximum allowable signal loss is 1 dB/km at 1300 nm and 3.6 dB/km at 850 nm for multi-mode fiber. It operates on a stable power supply, with a compact design suitable for standard baseplate installation.
2. Key Features
The FCM2F2 is a fiber optic communication extender designed for remote FBM deployment, extending baseplate-to-baseplate distance up to 2 km (its maximum fiber optic distance). It supports both redundant and non-redundant configurations: redundant use requires pairing FCM2F2 modules (four modules total for two baseplates), while non-redundant configuration only needs one FCM2F2 per baseplate. Its fiber optic wiring is immune to electrical noise such as EMI, RFI, and lightning, making it suitable for areas with rotating machinery, arc welders, high-voltage wires, or outdoor areas exposed to lightning hazards. The FCM2F2 has electrical isolation to prevent voltage differences and ground loops. It can be removed and replaced from the baseplate without powering down the system, minimizing maintenance downtime. Up to three fiber segments can connect a maximum of four baseplates, with the total fiber distance between baseplates not exceeding 20 km.
3. Installation & Wiring
The FCM2F2 is installed on standard baseplates, which include signal connectors for fieldbus, power, and I/O cables. A single baseplate can support up to eight FBMs, or a combination of FBMs and FCM2F2 modules. When connecting two baseplates with fiber optic cables (redundant configuration), each baseplate requires a pair of FCM2F2 modules; non-redundant configuration requires one FCM2F2 per baseplate. Baseplates within 60 meters can be connected via standard twisted-pair cables without FCM2F2 modules and fiber optic cables. Fiber optic cables for the FCM2F2 are purchased separately by the customer, and must use ST-type connectors (multi-mode graded-index glass fiber, 62.5/125 µm core/cladding, 0.275 NA) as specified for FCM2F2; non-compliant cables are not allowed. The FCM2F2 is installed in a rugged housing, suitable for harsh industrial environments, and can be mounted in control cabinets or on-site near process equipment.
4. Application
The FCM2F2 (Part Number: RH914YZ) is widely used in Foxboro I/A Series DCS systems, suitable for industrial control scenarios such as power, chemical, oil and gas, and other industries that require remote FBM deployment within 2 km. It is particularly applicable to areas with strong electromagnetic interference, lightning hazards, or long-distance (up to 2 km) communication needs between baseplates. It enables remote installation of 200-series FBM modules near factory processes, reducing the length of field wiring and improving system reliability. Its noise immunity and electrical isolation make it ideal for harsh industrial environments, ensuring stable and reliable data transmission between baseplates and FBM modules.
5. Ordering Information
Model & Part Number: FCM2F2 (RH914YZ). Each package includes one FCM2F2 module. Fiber optic cables (multi-mode graded-index glass fiber, 62.5/125 µm core/cladding, 0.275 NA, ST-type connectors) and baseplates are not included and need to be purchased separately. The FCM2F2 is compatible with Foxboro I/A Series DCS and 200-series FBM modules, ensuring seamless system integration.
6. Notes
The FCM2F2 (RH914YZ) is exclusively designed for Foxboro I/A Series DCS systems, compatible with 200-series FBM modules and standard baseplates. Redundant configuration requires pairing FCM2F2 modules to ensure fault tolerance and zero downtime. Fiber optic cables for FCM2F2 must meet the specified requirements (multi-mode graded-index glass fiber, 62.5/125 µm core/cladding, 0.275 NA, ST-type connectors) to avoid signal loss or communication failure. The FCM2F2 supports hot-swap replacement, which can be completed without shutting down the system. For optimal performance, install the FCM2F2 in a well-ventilated area, away from direct sunlight and extreme temperature fluctuations.

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