SKU: FBM207B

Foxboro FBM207B P0916BS Contact Sense Input Interface Module

The Foxboro FBM207B (P0916BS) is a 16-channel contact sense input module designed for the I/A Series DCS. It provides internal power for sensing dry contacts, features SOE recording for precise event timing, and supports redundant hardware configurations. This G3-certified module ensures robust discrete signal acquisition in demanding industrial environments

Technical Functionality

The Foxboro FBM207B, identified by part number P0916BS, functions as a high-density 16-channel discrete input module for the I/A Series and Foxboro Evo control systems. This specific “B” variant operates exclusively as a Contact Sense interface, meaning the module provides the necessary current to sense the open or closed state of external dry contacts. Because the module supplies its own internal sensing voltage, it eliminates the need for external power sources to drive the field loops. Consequently, it simplifies the wiring architecture for monitoring pushbuttons, limit switches, and auxiliary relay contacts.

Operational Performance

This module processes discrete signals with high reliability by performing continuous self-diagnostics on its internal circuitry and communication paths. It supports Sequence of Events (SOE) recording, which allows the system to capture state changes with millisecond-level precision for accurate post-trip analysis. Furthermore, the FBM207B facilitates redundant configurations; when installed in a redundant pair, the system ensures uninterrupted data acquisition even if a single module hardware failure occurs. The module also utilizes a conformal-coated assembly to maintain long-term stability in corrosive or humid industrial environments.

Key Technical Characteristics

16 Input Channels: Manages up to 16 independent dry contact inputs per module.
Internal Current Sourcing: Supplies the sensing current directly from the module to simplify field wiring.
SOE Capability: Provides high-resolution time-stamping for precise event tracking and troubleshooting.
Redundancy Support: Enables 1-out-of-2 (1oo2) hardware redundancy for mission-critical safety and control loops.
Filter Options: Includes configurable input filtering to prevent signal chatter from causing false alarms.
Environmental Rating: Meets ISA-S71.04 Class G3 standards for operation in harsh, corrosive atmospheres.

Primary Industrial Applications

Process Interlocks: Monitoring emergency stop buttons and safety gates in chemical or pharmaceutical plants.
Motor Control: Tracking the “Run” and “Trip” status of motor starters and variable frequency drives (VFDs).
Power Distribution: Supervising circuit breaker positions and protective relay contact outputs.
HVAC and Utilities: Integrating fan proof-of-flow switches and damper limit sensors into the centralized DCS.