Product Description

The FBM216 (P0922VV) is a redundant-capable HART analog input module for the Foxboro I/A Series DCS, designed for mission-critical process applications that demand continuous data availability. It provides eight galvanically isolated 4–20 mA input channels with full HART digital communication support.

When installed as a 1-for-1 redundant pair on a compatible redundant baseplate, two FBM216 modules form a fail-safe architecture. In the event of a single-module failure, signal processing continues without interruption, ensuring uninterrupted delivery of both analog process values and HART diagnostic data to the controller.

Technical Specifications

Typical Applications

• Emergency Shutdown (ESD) systems requiring redundant measurement paths

• Main steam header pressure monitoring in power plants

• Critical reactor temperature monitoring in chemical processing

• Custody transfer flow measurement in oil and gas facilities

Frequently Asked Questions

How does redundancy switchover affect the process signal?
The FBM216 supports bumpless transfer. If the primary module fails, the secondary module assumes control immediately, with no noticeable disturbance to the 4–20 mA value or HART data, maintaining control loop stability.

Does the FBM216 (P0922VV) support passive (externally powered) transmitters?
Yes. The module supports both active (2-wire) and passive (4-wire) transmitters. Depending on termination wiring, the FBM216 can supply loop power or measure externally sourced current.