Foxboro FBM242 RH916YY - HART-Compatible Analog I/O Module for Foxboro I/A Series

Foxboro FBM242 RH916YY – HART-Compatible Analog I/O Module for Foxboro I/A Series

In stock

Product Introduction:
The Foxboro FBM242 RH916YY is a HART-compatible analog I/O module for the Foxboro I/A Series distributed control system. The “FBM242” identifies the module as a HART-enabled analog board, while “RH916YY” is the specific part number for this revision. This module accepts 4-20mA analog signals from field transmitters while simultaneously supporting HART (Highway Addressable Remote Transducer) digital communication. The HART protocol allows the controller to read secondary variables (like temperature, pressure, and diagnostic data) from the same 4-20mA loop used for the primary process variable. This module is essential for modern process plants where asset management and remote diagnostics are required alongside traditional process control.

Technical Specifications:
Board Type: HART-Compatible Analog I/O Module
System: Foxboro I/A Series (Series 1, 2, 3)
Channels: 8 independent HART-enabled analog channels (4-20mA input)
HART Protocol: HART 7 compliant (1200 baud FSK, Bell 202)
Input Signal: 4-20mA, 2-wire HART compatible
Resolution: 16-bit A/D conversion
Accuracy: +/- 0.1% of full scale (analog), +/- 0.5% (HART digital)
HART Commands: Supports all standard HART commands (primary variable, secondary variables, device status, diagnostics)
Isolation: 1500V RMS channel-to-channel and channel-to-ground
Update Rate: 250ms for analog, 500ms for HART polling
Burst Mode: Supports HART burst mode for fast secondary variable reading
Voting: 1-out-of-2 or 2-out-of-3 voting with redundant modules
LED Indicators: Per-channel LEDs show HART communication status, analog status, and fault conditions
Power: 5V DC from I/A Series backplane
Form Factor: 3U Eurocard
Operating Temperature: 0 to 60 degrees Celsius

Functional Features:
Simultaneous Analog and Digital: Reads the 4-20mA safety signal and HART digital data at the same time, providing both process value and device health.
Remote Diagnostics: Allows maintenance engineers to read transmitter diagnostics (sensor health, impulse line blockage, battery status) from the control room without visiting the field.
Device Configuration: Supports HART commands for configuring transmitter range, damping, and units remotely.
Per-Channel HART Polling: Each channel can be independently configured for HART polling mode (continuous, burst, or on-demand).
Burnout Detection: Automatically detects open transmitter wires and alarms the controller.
Fail-Safe Output: On communication loss, the module drives the controller input to a predetermined safe value (typically 3.6mA or 21mA).