Product Description
📘 Product Overview
| Field | Details |
|---|---|
| Manufacturer | Schneider Electric (Foxboro) |
| Model Number | FBM203 (Part Number: RH914SV) |
| Product Type | Platinum/Nickel/Copper RTD Input Module |
| Function | Provides eight resistance temperature detector (RTD) input channels for 2- or 3-wire sensors (0 to 320 ohm) |
| System Compatibility | Interfaces with Foxboro DCS via redundant 2 Mbps module Fieldbus; compatible with 200 Series baseplates and 100 Series upgrades |
| Included Components | FBM203 module; requires separate Termination Assembly (TA) and cables |
⚙️ Hardware Specifications
| Feature | Specification |
|---|---|
| Input Channels | 8 isolated and independent RTD input channels |
| Input Range | 0 to 320 ohm (320 ohm = 64000 counts; min. overrange 327.675 ohm at 65535 counts) |
| Sensor Current | 0.19 mA DC nominal |
| Lead Resistance | 50 ohm max per lead (imbalance reduces accuracy) |
| Analog Accuracy | ±0.03% of span |
| Accuracy Temperature Coefficient | ±50 ppm/°C |
| Input Signal A/D Conversion | Independent Sigma-Delta converter per channel (new reading every 25 ms) |
| Integration Period | Software configurable |
| Common Mode Rejection | >125 dB at 50 or 60 Hz |
| Normal Mode Rejection | >95 dB at 50 or 60 Hz |
| Input Channel Isolation | Galvanically isolated; withstands 600 V AC for 1 minute (not for permanent connection) |
| Visual Indicators | Red and green LEDs for module status |
| Construction | Rugged extruded aluminum exterior |
🔌 Power Requirements
| Feature | Specification |
|---|---|
| Input Voltage Range (Redundant) | 24 V DC +5%, -10% |
| Consumption | 3 W (maximum) |
| Heat Dissipation | 3 W (maximum) |
🌡️ Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | Module and TA (PA): -20 to +70°C (-4 to +158°F) |
| Storage Temperature | -40 to +70°C (-40 to +158°F) |
| Relative Humidity | 5 to 95% (non-condensing) |
| Altitude (Operating) | -300 to +3,000 m (-1,000 to +10,000 ft) |
| Altitude (Storage) | -300 to +12,000 m (-1,000 to +40,000 ft) |
| Vibration | 7.5 m/s² (0.75 g) from 5 to 500 Hz |
| Contamination | Class G3 (harsh) per ISA S71.04, tested per EIA 364-65, Class III |
✅ Regulatory Compliance
| Standard | Detailsdestination_id="table-5" |
|---|---|
| EMC | European EMC Directive 2004/108/EC (pre-Apr 2016), 2014/30/EU (post-Apr 2016); EN61326-1:2013 Class A Emissions, Industrial Immunity |
| Product Safety (UL) | UL/UL-C listed for Class I, Groups A-D, Division 2, T4; Class 2 per NEC (NFPA No.70) and CSA C22.1 |
| Product Safety (Europe) | Low Voltage Directive 2006/95/EC (pre-Apr 2016), 2014/35/EU (post-Apr 2016); ATEX 94/9/EC (pre-Apr 2016), 2014/34/EU (post-Apr 2016); DEMKO Ex nA IIC T4 for Zone 2 |
| RoHS Compliance | Complies with European RoHS Directive 2011/65/EU, including 2015/863, 2017/2102 |
| Marine Certification | ABS Type Approved; Bureau Veritas certified for Environmental Category EC31 |
🛠️ Installation & Configuration
| Feature | Details |
|---|---|
| Mounting | Mounts on DIN rail or 19-inch rack modular baseplate (4 or 8 FBMs); supports 100 Series conversion structures |
| Termination Assemblies | DIN rail (compression: RH916XJ, ring lug: P0917JM, PA) or baseplate-mounted (compression: RH924WN, PC/ABS) |
| Auto-Detection | Communicates via redundant 2 Mbps Fieldbus; auto-switches to active path |
| Configuration | Analog input application program with configurable Rate of Change Limits |
| Calibration | Not required |
| Removal/Replacement | Can be removed/replaced without disconnecting field wiring, power, or communication cables |
📡 Termination Assemblies and Cables
| Feature | Specification |
|---|---|
| TA Types | Compression (PA: RH916XJ; PC/ABS: RH924WN); Ring Lug (PA: P0917JM) |
| TA Wiring (DIN Rail, Compression) | Solid/Stranded: 0.2 to 4 mm² / 0.2 to 2.5 mm² (24 to 12 AWG); Ferrules: 0.2 to 2.5 mm² |
| TA Wiring (Baseplate, Compression) | Solid/Stranded: 0.2 to 1.5 mm² (24 to 16 AWG); Ferrules: 0.25 to 0.75 mm² (with collar), 0.2 to 1.5 mm² (without) |
| TA Wiring (Ring Lug) | #6 connectors (0.375 in); 0.5 to 4 mm² (22 to 12 AWG) |
| TA Certification | Type 1: UL/UL-C Class I, Div 2, T4; DEMKO Ex nA IIC T4 (Zone 2); Type 2: Non-incendive field circuits, Class 2 |
| Cable Types | Type 1 (P/PVC: -20 to +80°C; LSZH: -40 to +105°C) |
| Cable Lengths | Up to 30 m (98 ft) |
| Cable Connectors | Baseplate: 37-pin D-sub; TA: 25-pin D-sub |
| Example Cable Part Numbers | 0.5 m: RH916DA (P/PVC), RH928AA (LSZH); 3.0 m: RH916DC (P/PVC), RH928AD (LSZH); 30 m: RH916DJ (P/PVC), RH928AK (LSZH) |
🔧 Functional Specifications
| Feature | Details |
|---|---|
| Input Signal | Supports 2- or 3-wire RTD sensors (Platinum: DIN, SAMA, IEC; Nickel: SAMA; 100 ohm nominal at 0°C) |
| Process I/O Communications | Redundant 2 Mbps Fieldbus with FCM or FCP; auto-switches to active path |
| Typical Sensors | Platinum (100 ohm at 0°C), Nickel (235 ohm at 0°C) |
| 100 Series Upgrade | Replaces 100 Series FBM03A (3-wire RTD); supports TA or Termination Assembly Adapter (TAA) for existing wiring |
📦 Ordering Information
| Field | Details |
|---|---|
| Model Number | FBM203 (RH914SV) |
| Includes | FBM203 module (TA and cables ordered separately) |
| TA Part Numbers | Compression: RH916XJ (DIN rail), RH924WN (baseplate); Ring Lug: P0917JM |