Technical Specifications
Compatible Termination Assemblies (TAs)
Note: A Type-1 termination cable (P0916DC/DD/DE series) is required to connect DIN rail-mounted TAs to the FBM baseplate.
Key Features & Benefits
Eight Isolated RTD Input Channels
The FBM203 provides 8 fully isolated, independent RTD input channels, each accepting Platinum, Nickel, or Copper resistance temperature detectors. The per-channel galvanic isolation withstands 600 V AC for one minute, preventing ground loops, field faults, and cross-channel interference from propagating through the system .
High-Accuracy Sigma-Delta Conversion
Each channel incorporates an independent Sigma-Delta converter providing new analog input values every 25 ms, with a configurable integration period to remove process noise and power line frequency interference. The module provides ±0.1% of full scale accuracy, making it suitable for precise temperature measurement in critical process loops .
Configurable Rate of Change Limits
The analog input application program provides configurable options for Rate of Change Limits, allowing engineers to detect abnormal temperature excursions and suppress noise-induced false alarms in temperature monitoring applications .
Redundant Fieldbus Architecture
The module independently connects to the redundant 2 Mbps Fieldbus. If one Fieldbus path fails, the module continues communication over the active path without process interruption .
Hot-Swap Capability
The FBM203 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, 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: P0916AE, RH916XJ, RH924WN
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Fieldbus Communication Modules: FCM10E, FCM2F2
Frequently Asked Questions (FAQ)
Q1: What is the primary function of the Foxboro FBM203 (P0914SV)?
The FBM203 is an 8-channel RTD input module for the I/A Series and Foxboro Evo DCS. It accepts resistance signals from Platinum, Nickel, or Copper RTD sensors, performs signal conversion, and transmits digitized temperature data to the control processor over the redundant Fieldbus .
Q2: What RTD sensor types does the FBM203 support?
The module supports Platinum, Nickel, and Copper RTD sensors. Each channel accepts a 2-wire or 3-wire RTD configuration within a 0 to 320 ohm resistance range .
Q3: What is the accuracy and conversion rate of the FBM203?
The module provides ±0.1% of full scale accuracy with a Sigma-Delta converter per channel, providing new analog input values every 25 ms with a configurable integration period .
Q4: What is the difference between FBM203 and FBM203d?
The FBM203 accepts 2-wire or 3-wire RTD inputs with a 0–320 Ω range. The FBM203d accepts 4-wire RTD inputs only, also with a 0–320 Ω range .
Q5: What termination assemblies are compatible with the FBM203?
DIN rail-mounted TAs: P0916AE (compression screw, Polyamide) or P0917JM (ring lug, Polyamide). Baseplate-mounted TA: RH924WN (compression screw, PC/ABS) — supported by FBM203/b/c only .
Q6: Can the FBM203 be replaced without shutting down the system?
Yes. The FBM203 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 .
Q7: What environmental conditions can the FBM203 withstand?
The module is rated for Class G3 (Harsh) environmental contamination per ISA S71.04. Operating temperature is -20°C to +60°C, with storage from -40°C to +70°C .
Q8: What is the sensor excitation current of the FBM203?
The module provides a fixed 0.19 mA DC excitation current per RTD channel to drive the connected field sensor .
Q9: What is the power consumption of the FBM203?
The maximum power consumption is 3 W .
Q10: 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 .
