Foxboro FBM214B RH927AH Industrial HART Analog Input Module

Product Description

The Foxboro FBM214B RH927AH is a high-integrity HART analog input module designed for the Foxboro Evo and I/A Series Distributed Control Systems (DCS). It provides eight individually isolated 4–20 mA input channels, each capable of simultaneously acquiring the analog process variable and communicating digitally with HART-enabled smart transmitters.

This module acts as a HART host, supporting universal, common practice, and device-specific commands, allowing operators to access transmitter diagnostics, configuration parameters, and device status directly from the control system. Moreover, it supports paired redundant modules for fault tolerance, ensuring continuous operation in mission-critical environments.

The FBM214B RH927AH reduces wiring complexity and eliminates the need for external HART multiplexers, improving plant reliability while enabling advanced process monitoring. Its industrial-grade design ensures stable, precise measurements even under harsh process conditions.

Technical Specifications

• Product type: HART analog input module

• Series: Foxboro I/A Series / Evo

• Model: FBM214B

• Part number: RH927AH

• Number of channels: 8 isolated analog input channels

• Input type: 4–20 mA current loop

• HART capability: Integrated FSK modem per channel; supports universal, common practice, and device-specific commands

• HART throughput: Up to 2 digital messages per second per device

• Isolation: Individual channel isolation

• Resolution: 16-bit A/D conversion

• Accuracy: ±0.1% of span (typical)

• Diagnostics: Built-in self-test, LED indicators, HART device diagnostics

• Power supply: 24 VDC nominal

• Dimensions: Standard FBM form factor (150 × 90 × 45 mm)

• Weight: 0.5 kg

• Operating temperature: –40 °C to +70 °C

• Storage temperature: –40 °C to +85 °C

• Relative humidity: 5–95% non-condensing

• Certifications: CE, RoHS, UL/cUL

• Lifecycle status: Active product in Foxboro portfolio

FAQ

Q1: Can the FBM214B RH927AH handle both analog and HART devices?
A1: Yes, each channel can simultaneously measure 4–20 mA analog signals and communicate with HART-enabled transmitters.

Q2: Does it support fault-tolerant operation?
A2: Yes, paired redundant modules can be configured for continuous operation in critical processes.

Q3: How many HART messages per second are supported?
A3: The module supports up to two digital HART messages per second per device.

Q4: Are the input channels isolated?
A4: Yes, all eight channels are individually isolated for noise immunity and measurement integrity.

Q5: Can it integrate with Foxboro Evo and I/A Series DCS?
A5: Absolutely, it is fully compatible with both Evo and I/A Series DCS, including standard termination assemblies.