The Foxboro I/A FBM01 (P/N: P0400DA) is an analog input interface module designed for the Foxboro I/A Series distributed control system (DCS). It is specifically engineered to handle industrial signal processing with high reliability.
Product Overview
The Foxboro FBM01 features eight independent analog input channels, each capable of accepting a 2-wire analog sensor input, such as a 4 to 20 mA transmitter or a self-powered 20 mA source. This module performs the necessary signal conversion to interface field sensor data with a redundant Fieldbus, ensuring consistent and accurate process monitoring.
Key Specifications
- Part Number: P0400DA
- Input Channels: 8 isolated and independent channels
- Input Range: 0 to 20.4 mA DC
- Communication: Connects to a redundant Fieldbus
- Power Requirements: 26 to 42 V DC (Redundant)
- Environmental Rating: Class G3 (Harsh) as per ISA Standard S71.04
- Accuracy: ±0.05% of span
Frequently Asked Questions (Q&A)
- What is the main purpose of the FBM01?
It serves as a bridge between analog field instrumentation and the digital Fieldbus system in an industrial control environment, converting raw analog currents into digital data for the controller.
- Is it compatible with 4-20 mA transmitters?
Yes, it is designed to interface with 2-wire 4-20 mA transmitters as well as self-powered 20 mA sources.
- Can it be used in harsh environments?
Yes, the module is designed for durability and is rated for Class G3 (Harsh) environments, making it suitable for demanding industrial and marine settings.
- What if I need a modern replacement?
The FBM01 is a legacy I/A Series module. Depending on your system upgrade path, modern variants such as the FBM201 series are often used as updated alternatives in newer Ecostruxure Foxboro DCS architectures.

