FBM228 Product Specification Sheet

1. Product Overview

FBM228 (Part Number: P0922QS) is a 4-channel isolated FOUNDATION Fieldbus H1 communication module for Foxboro Evo™ and I/A Series DCS systems. It acts as a bridge between the DCS controller and FOUNDATION Fieldbus H1 smart instruments (e.g., transmitters, valves, analyzers), supporting bidirectional high-speed data exchange and control. With 600 VAC one-minute channel-to-channel isolation, hot-swappable design, and rugged industrial housing, it delivers high reliability for harsh environments in chemical, petrochemical, power, and oil/gas industries. It supports module-level redundancy and is widely used in new projects and legacy DCS upgrades.

2. Key Specifications

Communication Protocol: Fully compliant with FOUNDATION Fieldbus H1 (31.25 kbit/s); adheres to FF-830 physical layer test standardsparesource.schneider-electric.com.

Ports & Capacity: 4 independent H1 channels; 16 devices per channel, 64 devices total.

Isolation: 600 VAC for 1 minute (channel-to-channel & channel-to-ground).

Power Supply: 24 VDC (±10%); max power consumption 3.8 W.

Environmental:

Operating: 0°C ~ +60°C

Storage: -40°C ~ +85°C

Humidity: 5%–95% non-condensing; ISA S71.04 Class G3

Certifications: CE, UL, ATEX, CSA; suitable for Class 1 Div 2 / Zone 2 hazardous areas.

Redundancy: Supports 1:1 module redundancy (dual-module hot backup).

Hot Swap: Module replacement without system shutdown, minimizing downtimeparesource.schneider-electric.com.

Physical:

Dimensions: 102 × 45 × 104 mm (H×W×D)

Weight: ~0.28 kg

Protection: IP20 (dust-resistant)

3. Core Features

4-Channel Isolation: Independent electrically isolated channels prevent crosstalk and enhance noise immunity.

Polarity Insensitivity: Supports non-polarity H1 bus wiring, simplifying field installationparesource.schneider-electric.com.

Diagnostic LEDs: Front-panel red/green LEDs for operation status; amber LEDs for master/tracker role indicationparesource.schneider-electric.com.

Redundancy Support: Dual-module hot standby ensures uninterrupted communication for critical loops.

Rugged Design: Compact metal housing with high vibration and EMI resistance for industrial environmentsparesource.schneider-electric.com.

4. Termination & Cabling

Termination Assembly (TA): DIP-switch selectable 120Ω termination resistors per channel; compression terminals for stable wiringparesource.schneider-electric.com.

Connection Cables: Standard FF H1 shielded twisted-pair cables (Type A/B) for 31.25 kbit/s communicationparesource.schneider-electric.com.

Max Distance: 1900 m per segment (without repeaters); extendable via repeaters for large-scale networksparesource.schneider-electric.com.

5. Applications

Ideal for large-scale FOUNDATION Fieldbus H1 networking in process industries:

Chemical & Petrochemical Plants: Integrate H1 smart transmitters, valves, and analyzers.

Power Stations: Connect fieldbus devices in boiler, turbine, and auxiliary systems.

Oil & Gas: Suitable for offshore platforms and onshore refineries (hazardous area certified).

Legacy System Upgrades: Seamlessly integrate H1 devices into existing Foxboro I/A Series DCS.

[1] Foxboro (Schneider Electric) is a global leader in process automation, with products widely used in power, oil, gas, and chemical industries.

[2] FBM228 (P0922QS) is a standard 4-channel FF H1 module, distinct from PROFIBUS (FBM222/FBM223) and Modbus (FBM224) modules.

[3] Supports hot swap and channel isolation, easing installation, maintenance, and fault replacementparesource.schneider-electric.com.

[4] Communication and environmental specs align with Foxboro FBM series standards, ensuring system compatibilityparesource.schneider-electric.com.