Technical Specifications
Key Features & Benefits
Eight Isolated Analog Input Channels
The FBM201 provides 8 fully isolated, independent analog input channels, each accepting a 0-20 mA DC signal from a 2-wire transmitter or self-powered source. The per-channel galvanic isolation prevents ground loops, field faults, and cross-channel interference from propagating through the system, protecting the control processor backplane from field-side electrical issues.
High-Accuracy Sigma-Delta Conversion
Each channel incorporates an independent Sigma-Delta analog-to-digital converter, providing 14-bit resolution and ±0.03% of span accuracy. The module provides new analog input readings with a configurable integration period to remove process noise and power line frequency interference, ensuring stable measurement for critical process loops.
HART Signal Compatibility
The FBM201 channels are electrically compatible with standard HART signals, allowing digital communication with smart field instruments without interfering with the analog signal. This preserves smart transmitter diagnostics capability during operation.
Redundant Fieldbus Architecture
As a main-type FBM, the module independently connects to the redundant 2 Mbps Fieldbus. If one Fieldbus segment fails, the module automatically switches to the alternate path, maintaining continuous data exchange with the control processor without process interruption.
Hot-Swap Capability
The FBM201 supports live insert and removal on an energized I/A Series baseplate. The module can be removed or replaced without disconnecting field wiring, power, or communication cabling, reducing Mean Time to Repair (MTTR) and enabling maintenance during continuous process operations.
Rugged Industrial Construction
The module features a rugged extruded aluminum exterior for physical protection of circuits. It is rated for Class G3 (Harsh) environmental conditions per ISA S71.04, making it suitable for corrosive chemical plants, coastal installations, and other demanding industrial settings.
Recommended Related Models
Compatible I/A Series Components:
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Control Processors: CP60, FCP270, FCP280
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Termination Cable: P0916DC (Type-1, 3 m)
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Termination Assemblies: P0916AA (compression), P0916AB (ring lug), P0916XG (PA material)
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Fieldbus Communication Modules: FCM10E, FCM2F2
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the Foxboro FBM201 (P0914SQ)?
The FBM201 is an 8-channel analog input module for the I/A Series and EcoStruxure Foxboro DCS. It accepts 0-20 mA DC signals from field transmitters, performs signal conversion, and transmits digitized process data to the control processor over the redundant Fieldbus.
Q2: What input signals does the FBM201 support?
The standard FBM201 (P0914SQ) accepts 0 to 20 mA DC signals. Other variants in the family support different ranges: FBM201b (0-100 mV), FBM201c (0-5 V), and FBM201d (0-10 V). The FBM201 is designed for current loop applications and naturally works with standard 4-20 mA transmitters.
Q3: What is the accuracy and resolution of the FBM201?
The module provides ±0.03% to ±0.1% of span accuracy (source variance exists) with 14-bit resolution (some sources cite 16-bit). The Sigma-Delta converter per channel provides new readings every 25 ms with a configurable integration period.
Q4: Does the FBM201 support HART communication?
The FBM201 channels are electrically compatible with HART signals, allowing HART digital communication to pass through without interfering with the analog signal. However, the module does not perform HART demodulation internally; for full HART capabilities, modules such as FBM214 are recommended.
Q5: Can the FBM201 be replaced without shutting down the system?
Yes. The FBM201 supports hot-swap replacement on an energized I/A Series baseplate. Field wiring, power, and communication cables remain undisturbed, and the redundant Fieldbus ensures no loss of communication during the swap.
Q6: What is the difference between P0914SQ and RH914SQ?
RH914SQ is the later replacement part number for the P0914SQ. Both are hardware compatible and directly interchangeable.
Q7: What termination assemblies are compatible with the FBM201?
Compatible TAs include the P0916AA (compression, PVC), P0916AB (ring lug, PVC), P0916XG (compression, PA), and P0917JK (ring lug, PA). A Type-1 termination cable (e.g., P0916DC, 3 m) is required to connect the TA to the FBM baseplate.
Q8: What environmental conditions can the FBM201 withstand?
The module is rated for Class G3 (Harsh) environmental contamination per ISA S71.04. Operating temperature is -20°C to +70°C with 5% to 95% non-condensing humidity.
Q9: Does this module come with a warranty?
Yes. This offering includes a 1 Year Warranty on the module. Verify warranty terms with your supplier before purchase.
