Description

The Foxboro FBM218 (P0922VW) is a high-reliability HART communication output module designed for the I/A Series distributed control system. This module provides eight galvanically isolated output channels, each delivering a 4-20 mA DC signal to field actuators while simultaneously supporting bidirectional digital communication via the HART protocol. Engineered for mission-critical process control in industries such as oil and gas, chemical processing, and power generation, the FBM218 enables remote device calibration and real-time diagnostics, significantly reducing the requirement for manual field interventions.

Features

• Eight galvanically isolated 4-20 mA DC output channels.
• Integrated HART protocol support (Versions 5, 6, and 7) for bidirectional digital communication.
• Supports redundant module configurations for high-availability, bumpless failover.
• Hot-swappable design allows for module replacement without interrupting system operation or power.
• On-board microprocessor manages HART layering independently of the primary control signal.
• Seamless integration with the 2 Mbps Module Fieldbus.

Applications

This module is ideal for applications requiring precise control and monitoring of intelligent field devices. Common use cases include:

• Control of valve positioners and actuators in hazardous process environments.
• Remote diagnostics and configuration of smart instrumentation.
• High-availability control loops where downtime must be minimized.
• Integration of legacy 4-20 mA loops with modern digital asset management systems.

Technical Specifications

Installation Guidelines

• Ensure the I/A Series baseplate is powered down before inserting or removing the module, unless the system is specifically configured for hot-swapping in a live environment.
• Verify that the module is securely seated in the designated slot to ensure proper connection to the Module Fieldbus.
• Use shielded twisted-pair cabling for all HART-enabled signal loops to minimize electromagnetic interference (EMI).
• Maintain proper grounding practices for the I/A Series rack to ensure signal integrity and compliance with safety standards.
• Ensure adequate ventilation around the module to maintain operating temperatures within the specified -20 to +70 deg C range.

Compliance and Certifications

The FBM218 is designed for use in demanding industrial environments and meets the following standards: Class I, Div 2; ATEX Zone 2; CE; and is SIL 2 capable.

FAQ

Is the FBM218 compatible with existing I/A Series systems?

Yes, the FBM218 is designed specifically for the Foxboro I/A Series and integrates with the 2 Mbps Module Fieldbus.

Does this module support redundant operation?

Yes, the P0922VW supports redundant configurations, allowing two modules to operate in parallel for high-availability and bumpless failover.

Can I replace the module while the system is running?

The module is hot-swappable, allowing for maintenance and replacement without interrupting communication or power to other modules on the same baseplate.