Foxboro FBM36 (P0912MK) – 8‑Channel HART Analog Input/Output Module

Specifications & User Guide (Copy‑Ready English)

General

Model: FBM36 (P0912MK)

System: Foxboro I/A Series / EcoStruxure Foxboro DCS

Type: 8‑channel HART‑capable analog input/output (AI/AO) module

Function: Mixed 4–20 mA / HART signal interface for transmitters & valves

Redundancy: 1:1 hot‑swap redundant capable

Hot Swap: Supported (no system shutdown)

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 rated

Dimensions: 140 mm × 165 mm × 45 mm

Weight: 0.65 kg

I/O Channel Specifications

Channels: 8 galvanically isolated (independently configurable)

Signal Types (per channel):

4–20 mA analog input (AI)

4–20 mA analog output (AO)

HART‑enabled AI/AO (supports HART 5/6/7)

0–20 mA, 0–10 V, 0–5 V (non‑HART)

NAMUR NE 43 compliant (fault detection)

Resolution: 16‑bit (0.01 % FS accuracy)

Isolation: 250 VAC (1 min) channel‑to‑channel & channel‑to‑ground

Update Rate: 10–100 ms (configurable)

HART Load: 250 Ω (built‑in, supports hand‑held terminals)

Short‑circuit & Overload Protection: Per channel (auto‑recovery)

Status LEDs: 8 channel (ON/FAULT/HART) + module RUN/FAULT

Power

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

Consumption: 10 W (single); 16 W (redundant pair)

Heat Dissipation: 9.5 W (single); 15.3 W (redundant pair)

Communication

Fieldbus: Redundant 2 Mbps backplane (I/A Series)

Protocol: Foxboro proprietary + HART pass‑through

Data Update: 50 ms (default)

Max HART Devices: 8 (one per channel)

Basic Installation & Usage

Mounting

Snap into standard I/A Series DIN rail or baseplate.

Secure latch; ensure full seating for backplane contact.

Wiring

Connect field devices (transmitters, positioners) to TA (Termination Assembly).

4–20 mA: 2‑wire (AI) / 4‑wire (AO); HART: 2‑wire (loop‑powered).

Separate analog and digital cables; use shielded twisted pair for HART.

Each channel isolated; no common ground between channels.

Configuration (I/A Series Software)

Set channel mode: AI / AO / HART AI / HART AO.

Configure range (4–20 mA / 0–10 V) and scaling.

Enable HART (baud rate: 1200 bps); set NE 43 fault thresholds.

Assign failsafe state (hold / 0 % / 100 %) for AO channels.

Set scan rate (10–100 ms) and enable diagnostics.

Operation

RUN (green): module ok; FAULT (red): error (short circuit, comms).

Channel LED: ON = active; FLASH = fault; HART = HART communication.

Monitor HART variables (PV, SV, diagnostics) in HMI.

Use HART hand‑held terminal for on‑site configuration.

Maintenance

Hot‑swap faulty module (no shutdown).

Inspect TA wiring, shields, and grounds annually.

Update firmware via I/A Series software.

Calibration: Not required (factory‑calibrated; on‑board diagnostics).

Typical Applications

HART transmitter interface (pressure, flow, level, temperature).

Control valve positioners with HART feedback.

Mixed analog/HART I/O for skids and package units.

Migration of legacy FBM04/FBM05 to 200‑series FBMs.