FOXBORO FBM214B RH101AB

Product Name: Foxboro (Schneider Electric) FBM214B 8-Channel Isolated Analog Input Module with HART Pass-Through
Product Introduction: A high-resolution analog input module for the Foxboro I/A Series Distributed Control System (DCS). Accepts 4–20 mA, 0–20 mA, 0–5 VDC, 1–5 VDC, or 0–10 VDC signals from field transmitters and provides 16-bit resolution with full channel-to-channel and channel-to-ground isolation. Supports HART digital communication pass-through to asset management software.

Category: FOBORO

Description

Technical Specifications:
- Channels: 8 independent, galvanically isolated inputs
- Input Signal Types: Software-selectable 4–20 mA, 0–20 mA, 0–5 V, 1–5 V, 0–10 V
- Resolution: 16-bit A/D conversion
- Accuracy: ±0.05 % of Full Scale typical
- Update Rate: < 50 ms per channel (configurable)
- Isolation Voltage: 1500 VAC RMS channel-to-channel and channel-to-system
- HART Support: Yes — HART 5/6/7 digital signal transparently passed to HART modem / AMS/PRM
- Open Wire Detection: Yes (for 4–20 mA, detects < 3.6 mA or > 22 mA)
- Terminals: Requires compatible Foxboro terminal block (e.g., NFBT or RTB series)
- Power: Supplied from FBM node backplane (5 VDC)
- Operating Temp.: -20 °C to +70 °C
- Humidity: 5–95 % RH non-condensing
- Certifications: CE, UL, CSA, ATEX Zone 2 / IECEx (where marked)
- Physical: Plug-in module, approx. 102 × 45 × 104 mm, weight ~ 0.28 kg
Structure & Material: Molded flame-retardant plastic housing with metal shield plate, gold-plated backplane edge connector, front LEDs (ACTIVE, FAULT, HART).
Working Principle: Each channel conditions the analog signal via instrumentation amplifier, digitizes via 16-bit ADC, and transmits data to the Control Processor over the redundant Fieldbus. HART FSK (Bell 202) modulation superimposed on 4–20 mA is coupled through to the HART interface without affecting analog accuracy.
Installation & Notes: Must be used with compatible termination assembly (check IOM-type). For HART, ensure loop resistance is ≥ 250 Ω (usually in transmitter supply). Do not mix voltage and current inputs on same module unless explicitly supported by configuration. Perform AI calibration via system software after installation.

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