Description
Description
The Foxboro FBM211 (P0914TN) is a high-density analog input module designed for the I/A Series distributed control system. It provides sixteen isolated 0 to 20 mA DC analog input channels, serving as a critical interface between field instrumentation—such as pressure transmitters, flow meters, and temperature transducers—and the control processor. Engineered for high-availability environments, including oil refineries, chemical processing plants, and power generation facilities, the FBM211 ensures signal integrity through robust group isolation and advanced filtering, effectively minimizing process variability and supporting mission-critical control loops.
Features
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High-Density Design: 16-channel input capacity optimized for the Series 200 I/O subsystem.
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Signal Precision: Each channel utilizes a dedicated Sigma-Delta analog-to-digital converter for high resolution and superior noise rejection.
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Redundancy Support: Supports redundant power and communication paths; compatible with redundant baseplates for instantaneous failover.
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Communication: Interfaces with the Control Processor via a redundant 2 Mbps HDLC Fieldbus.
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Diagnostics: Executes continuous self-diagnostics, including monitoring of A/D converters, memory parity, and communication port health.
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Galvanic Isolation: Protects internal system logic from field-side voltage spikes and common-mode noise.
Applications
The FBM211 is widely utilized in industrial automation systems requiring precise, reliable analog data acquisition. Typical applications include monitoring process variables in petrochemical, water treatment, and power generation plants where signal stability and system uptime are paramount.
Technical Specifications
| Model |
FBM211 (P0914TN) |
| Channels |
16 Isolated Analog Inputs |
| Input Range |
0 to 20 mA DC |
| Accuracy |
+/- 0.03 percent of span |
| Resolution |
15-bit |
| Input Impedance |
250 Ohms (nominal) |
| Communication |
Redundant 2 Mbps HDLC Fieldbus |
| Power Consumption |
3 Watts maximum |
| Operating Temperature |
0 to 60 deg C |
| Relative Humidity |
5 to 95 percent (non-condensing) |
Installation Guidelines
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Handling: Use proper ESD protection when handling the module to prevent damage to sensitive internal components.
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Mounting: Ensure the module is securely seated in the designated slot on the Series 200 baseplate.
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Power: Always remove power from the baseplate before inserting or removing the module to prevent electrical arcing or damage.
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Wiring: Use shielded twisted-pair cabling for field inputs to maintain signal integrity and minimize EMI interference.
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Grounding: Ensure the baseplate is properly grounded according to site specifications to maintain galvanic isolation effectiveness.
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Environment: Maintain adequate ventilation within the cabinet to ensure the module operates within its specified temperature range.
FAQ
Q: Can the FBM211 be used in a redundant configuration?
A: Yes, the FBM211 supports redundant operation when installed in pairs on a redundant baseplate, allowing for seamless failover if one module fails.
Q: What is the primary communication protocol for this module?
A: The module communicates via a redundant 2 Mbps HDLC (High-Level Data Link Control) Fieldbus.
