FOXBORO FBM01 Product Brief Description

The FOXBORO FBM01 is a legacy 100-series 8-channel galvanically isolated analog input fieldbus module for Foxboro I/A Series DCS. It collects 0~20.4mA DC current signals from 2-wire field transmitters such as pressure, flow, level and temperature sensors, converts analog signals to digital data and communicates with control processors over redundant fieldbus. It is the predecessor of the FBM201 module and does not natively support HART protocol.

Product Features

• 8 fully isolated analog input channels for 0~20.4mA DC, compatible with standard 4-20mA two-wire transmitters
• Galvanic isolation between channels and fieldbus, effectively eliminating ground loop interference
• Per-channel diagnostics for open circuit, short circuit and out-of-range signal detection
• Adjustable signal filter to suppress 50/60Hz power frequency noise; supports rate-of-change alarm function
• Redundant fieldbus communication interface for high reliable data transmission to CP controllers
• Plug-in rack-mounted design, equipped with front panel LED status indicators for quick fault diagnosis

Application Scenarios

• Petrochemical and chemical plant 4-20mA field instrument signal acquisition
• Oil & gas processing pressure, flow, liquid level real-time monitoring loops
• Power plant boiler and auxiliary system analog parameter collection
• Pulp & paper, pharmaceutical continuous production process monitoring
• Legacy Foxboro I/A Series DCS spare I/O module replacement and system retrofit

Frequently Asked Questions