Product Overview

The Foxboro FCM2F10 (Part Number P0916TQ) is a high-performance Fieldbus Communications Module designed to provide long-distance fiber optic extension for the I/A Series Distributed Control System (DCS). This module acts as a specialized bridge, allowing the 2 Mbps module Fieldbus to extend far beyond the electrical limits of standard copper cabling. By converting electrical signals into optical pulses, the FCM2F10 enables the strategic distribution of Fieldbus Modules (FBMs) across expansive industrial sites.

Engineered for large-scale infrastructure, the FCM2F10 specifically utilizes single-mode fiber technology to reach distances up to 10 kilometers (6.2 miles). This capability allows engineers to place remote I/O baseplates in separate buildings or distant process areas while maintaining high-speed, deterministic communication with the central control processors.

Technical Specifications

• Manufacturer: Foxboro (Schneider Electric / Invensys)

• Model Number: FCM2F10

• Part Number: P0916TQ

• Module Type: Fiber Optic Fieldbus Extender

• Fiber Type: Single-mode (1310 nm)

• Maximum Distance: 10 km (6.2 miles)

• Communication Rate: 2 Mbps Fieldbus

• Power Requirements: 24V DC nominal

• Current Consumption: 150 mA

• Operating Temperature: -20°C to +60°C

• Physical Protection: Hardened aluminum housing

• Dimensions: 4.5 x 11.5 x 11.5 cm

• Weight: 0.3 kg

Core Technical Characteristics

• Extended Range Capability: Unlike multimode variants, the FCM2F10 leverages single-mode fiber optics to eliminate signal attenuation over long runs, supporting a 10 km radius for distributed I/O placement.

• Redundancy Support: For high-availability mission-critical applications, the modules are typically deployed in pairs. This configuration ensures that if one fiber link or module fails, the redundant partner maintains the integrity of the "A" or "B" Fieldbus path.

• Galvanic Isolation: By utilizing a fiber optic medium, the FCM2F10 provides total electrical isolation between baseplates. This eliminates ground loop issues and protects the DCS from lightning strikes or heavy electrical surges common in outdoor cable runs.

• Protocol Transparency: The module is fully transparent to the I/A Series communication protocol. It requires no special software configuration to pass digital and analog I/O data, ensuring seamless integration with existing DIN rail FBM assemblies.

• Rugged Industrial Build: Designed for the plant floor, the module features a compact, vibration-resistant chassis that mounts directly onto standard I/A Series baseplates, facilitating easy installation within existing control cabinets.

• Real-Time Performance: The optical conversion process introduces negligible latency, ensuring that remote process variables are updated at the high speeds required for precise industrial control loops.

Primary Applications

The Foxboro FCM2F10 P0916TQ is a vital component for:

• Dispersed Plant Sites: Connecting remote tank farms, pumping stations, or cooling towers to a central control room.

• Inter-Building Networking: Linking multiple process units within a refinery or chemical complex without the need for expensive copper repeaters.

• Electrically Noisy Environments: Providing interference-free communication in areas with heavy motors, variable frequency drives (VFDs), or high-voltage switchgear.

• Hazardous Area Isolation: Safe signal transmission through volatile zones via non-sparking optical fiber.