Schneider Electric / Invensys / Foxboro FBM201 Analog Input Interface Module

The Schneider Electric / Invensys / Foxboro FBM201 is an 8-channel analog input interface module designed for industrial control systems. It acquires 0–20 mA DC signals from field devices with galvanic isolation per channel, delivering ±0.03% accuracy and independent Sigma-Delta conversion. The module integrates into distributed I/O networks via redundant 2 Mbps Fieldbus communication with FCM or FCP controllers, supporting HART-compatible signals and configurable integration periods.

Technical Specifications

• Input Channels: 8 isolated, independent channels


• Signal Range: 0–20 mA DC per channel


• Analog Accuracy: ±0.03% of span (includes linearity)


• Temperature Coefficient: ±50 ppm/°C


• Input Impedance: 61.5 Ω nominal


• A/D Conversion: Independent Sigma-Delta converter per channel


• Common Mode Rejection: >100 dB at 50/60 Hz


• Normal Mode Rejection: >95 dB at 50/60 Hz


• HART Compatibility: Electrically compatible with standard HART signals

Key Features

• Redundant 2 Mbps Fieldbus communication with FCM or FCP


• Software-configurable integration period and rate-of-change limits


• Maximum termination cable length: 30 meters (98 feet)


• Input voltage (redundant): 24 V dc ±5%, −10%


• Power consumption: 7 W maximum


• Heat dissipation: 3 W maximum


• Compact form factor: 130 mm H × 25 mm W × 150 mm D (includes connectors) or standard: 102–114 mm H × 45 mm W × 104 mm D


• Module weight: 0.284 kg


• Enclosure: Rugged extruded aluminum (standard) or ABS plastic (compact)

Typical Applications

• Industrial automation and process control


• Field device signal acquisition and integration


• Distributed I/O systems requiring high noise immunity

Compatibility & Integration Mounts on 16-slot horizontal baseplate compatible with DIN rail or 19-inch rack installation. Termination assemblies support 32 mm and 35 mm DIN rail standards. Cabling distance depends on compliance voltage (22.8 VDC), wire resistance, and field device voltage drop.