Description
The Foxboro FBM218 (P0922VW) is a specialized HART communication module engineered for the I/A Series Distributed Control System (DCS). This module features eight isolated analog output channels capable of supporting superimposed HART digital communication, making it a critical component for process automation environments that require precise valve control and advanced diagnostic capabilities. By supporting 1-for-1 functional redundancy, the FBM218 ensures high availability and reliable operation in demanding industrial sectors, including oil and gas, chemical manufacturing, and power generation.
Features
- Eight independently isolated analog output channels (4-20 mA DC).
- Integrated HART protocol support for bi-directional communication with intelligent field instruments.
- High-integrity galvanic isolation (600 VAC) protecting against ground loops and electrical interference.
- Redundancy-ready architecture for seamless failover in mission-critical control loops.
- High-speed 2 Mbps Fieldbus interface for synchronized command delivery and diagnostic data transfer.
- 13-bit resolution with an accuracy of +/- 0.05% of span.
Applications
The FBM218 is designed for applications where continuous process uptime is essential. It is frequently employed in control systems managing critical actuators, positioners, and transmitters that utilize HART diagnostics to monitor health and performance. Its robust design is well-suited for harsh industrial environments requiring high reliability and protection against field-side electrical disturbances.
Technical Specifications
| Model |
FBM218 (P0922VW) |
| Channels |
8-Channel HART Output |
| Output Signal |
4-20 mA DC + HART |
| Isolation |
600 VAC (Channel-to-Earth / Channel-to-Channel) |
| Accuracy |
+/- 0.05% of span |
| Resolution |
13 bits |
| Power Consumption |
7 Watts (Max) |
| Operating Temp |
0 to 60 deg C |
| Storage Temp |
-40 to +70 deg C |
| Humidity |
5 to 95% (non-condensing) |
Installation Guidelines
- Ensure the DCS is powered down before inserting or removing the module from the baseplate.
- The FBM218 must be installed in a compatible I/A Series baseplate; for redundant configurations, ensure modules are placed in the correct adjacent slots.
- Use appropriate shielded cabling for field connections to maintain signal integrity and meet EMI protection standards.
- Verify that the module is securely seated and locked into the baseplate to ensure reliable electrical contact.
- Maintain proper ventilation in the control cabinet to ensure ambient temperatures remain within the 0 to 60 deg C operating range.
Compliance and Certifications
The FBM218 is designed to meet rigorous industrial standards, including CE marking, CSA certification, and FM approval for Class 1 Division 2 hazardous locations.
FAQ
Does this module support redundant operation? Yes, the FBM218 is designed for 1-for-1 functional redundancy when installed in an appropriate redundant baseplate configuration.
What is the primary function of the HART communication in this module? The HART capability allows the DCS to perform bi-directional digital communication with field devices, enabling remote configuration, monitoring, and advanced diagnostic reporting without interrupting the 4-20 mA control signal.
