Foxboro FBM43 (P0950BM)

Copy-Ready English Specification

General

Model: FBM43 (P0950BM)

System: Foxboro I/A Series DCS

Type: Intelligent Transmitter Interface Module (HART/Fieldbus)

Role: Connects smart field devices (HART transmitters, valve positioners) to I/A Series backplane

Redundancy: 1:1 hot‑swap capable

Hot Swap: Supported

Certification: CE, UL, CSA, ATEX; Class I Div 2 / Zone 2

Environment: Class G3 (harsh industrial)

Operating Temp: 0 °C to +60 °C

Storage Temp: −40 °C to +85 °C

Humidity: 5–95 % non‑condensing

Enclosure: Die‑cast aluminum, IP20

Dimensions: 140 mm × 165 mm × 45 mm

Weight: 0.6 kg

Communication & Channels

Fieldbus: Redundant 2 Mbps I/A backplane

Protocol: Foxboro proprietary + HART 5/7 (dual baud rate)

Device Support: Up to 8 HART devices (point‑to‑point or multi‑drop)

Signal Isolation: 600 VAC (1 min) channel‑to‑ground

Status LEDs: Module RUN/FAULT + 8 channel COMM/FAULT

Electrical

Supply: 24 VDC (±5 % / −10 %), redundant

Consumption: 10 W (single); 15 W (redundant)

Loop Power: 12–42 VDC (per HART channel, software configurable)

Loop Current: 4–20 mA (HART signal superimposed)

Key Features

Dual Baud Rate: Auto‑switches between 1200 bps (HART) and 2 Mbps (backplane)

Device Diagnostics: Reads HART status, alarms, PV, SV, TV, MV

Configuration: Full HART parameter setup via I/A Series software

Fault Tolerance: Per‑channel short‑circuit protection; auto‑recovery

Termination: P0500RY / RH914TG TA (order separately)

Applications

Smart Transmitter Interface: Pressure, temperature, flow, level HART transmitters

Valve Control: HART positioners, solenoid valves with feedback

Legacy Migration: Integrate HART devices into I/A Series without external multiplexers

Process Industries: Chemical, power, oil & gas, water treatment

FBM43 vs FBM41/FBM42

FBM43: HART/fieldbus interface (8 channels, digital + 4–20 mA)

FBM41/FBM42: Discrete I/O (8DI+8DO, 60 VDC, no HART)