Foxboro FBM207B RH914WH Switch Input Module

Foxboro FBM207B RH914WH (Material Number P0914WH) Module Details
I. Basic Information
Brand: Foxboro (formerly Invensys, now part of Schneider), compatible with I/A Series / Foxboro Evo DCS system
Complete Component Code: FBM207B, RH914WH/P0914WH are the official part numbers for this module
Module Type: 16-channel 24VDC contact sensor input module (DI card)
Life Cycle: The original factory has discontinued production (EOL), there are very few new spare parts in circulation on the market. The majority are dismantled second-hand, tested refurbished items. It is a commonly used spare part in chemical / power plant old DCS systems

Core Hardware Parameters
Channel Configuration
16 independent switch input channels, each channel is fully electrically isolated between channels and ground, with isolation withstand voltage of 600V AC/1 minute, strong resistance to ground loop interference
Compatible Signals: 24VDC wet contacts / dry contacts, proximity switches, relay passive contacts, solid-state switches
Electrical Specifications
Open-circuit detection voltage: 24VDC ±15%
Typical short-circuit current: 3.2mA
Conduction determination: Loop resistance ≤ 1kΩ = ON; Loop resistance ≥ 100kΩ = OFF
Module Power Supply: Backplane 24VDC (+5% / -10%), maximum power consumption 4W
Signal Anti-jitter and Expansion Function
Input filtering / anti-jitter time software configurable: no filtering, 4ms/8ms/16ms/32ms, can suppress on-site contact jitter
Support pulse counting: can capture up to 250Hz pulses, no missed pulses
Support SOE event sequence recording, used for interlock trip traceability, precise fault time positioning
Communication and Redundancy
Through redundant 2Mbps fieldbus for communication with the controller
Support single card operation or paired redundant configuration (key interlock points are recommended for redundant deployment), shared supporting terminal board TA
Environment and Structure
Operating Temperature: -40℃ ~ +70℃, meets ISA G3 anti-corrosion grade, suitable for harsh industrial conditions in petrochemical and power plants
Cast aluminum heat sink enclosure, supports hot-swapping, can be replaced online without interrupting system operation
Panel comes with 16-channel status indicator lights (CH01~CH16) + operation status light, light on of the channel = contact closed

Series Differentiation (FBM207 / FBM207B / FBM207C) Table
Model Part Number Input Specification
FBM207 General Model General DC Voltage Monitoring Input
FBM207B RH914WH(P0914WH) 24VDC Contact Input
FBM207C RH917GY 48VDC Contact Input
The selection should not be mixed. FBM207B can only collect 24V contact signals and cannot directly connect to a 48V circuit.

Typical Application Scenarios
Petroleum and power plants DCS collect pump / fan start/stop status, valve fully open / fully closed, local buttons, limit switch signals
ESD interlock auxiliary DI signal collection, trip event SOE recall
Centralized upload of auxiliary equipment status of the unit to the DCS upper computer for monitoring