FBM29

General Information

Manufacturer: Foxboro (Schneider Electric)

Model: FBM29

Series: I/A Series DCS

Type: 16‑Channel Galvanically Isolated Discrete Output Module

Function: Drives external 15–240 VAC/DC discrete devices (solenoids, relays, motor starters)

Environment: Class G3 harsh industrial (ISA S71.04)

Certification: CE, ATEX, CSA; Class 1 Div 2 / Zone 2 hazardous area approved

Hot Swap: Supported

Redundancy: 1:1 redundant pairing supported

Key Specifications

Channels: 16 galvanic‑isolated discrete outputs (solid‑state, external power)

External Supply (per channel):

15–60 VDC, up to 2 A

120 VAC / 125 VDC, up to 0.5 A

240 VAC, up to 0.5 A

On‑state Voltage Drop: ≤ 0.2 V @ 2.25 A

Off‑state Leakage Current: ≤ 0.1 mA

Isolation: Per‑channel galvanic isolation (600 VAC 1 minute withstand)

Module Power: 24 VDC (+5% / −10%)

Power Consumption: ≤ 3 W

Operating Temperature: 0°C to +60°C

Storage Temperature: −40°C to +85°C

Humidity: 5%–95%, non‑condensing

Main Features

16 Fully Isolated Outputs: Per‑channel isolation eliminates crosstalk and fault propagation。

Multi‑Voltage Support: Works with 15–60 VDC, 120/240 VAC, and 125 VDC legacy systems。

Configurable Logic:

Fail‑safe modes (hold, off, preset)

Sustained or momentary (pulse) outputs

Software‑selectable delay & debounce

Hot‑Swappable: Online replacement without shutdown。

LED Diagnostics: Front‑panel LEDs for module health and per‑channel status。

Ladder Logic: Executes discrete I/O or ladder logic locally。

FBM29 vs FBM27 (Quick Difference)

FBM27: 16‑channel DO, expansion (no onboard inputs), pairs with FBM26.

FBM29: 16‑channel DO, standalone discrete output module; same electrical specs as FBM27 but different form factor/termination。

Applications

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

On/Off Control: Solenoids, motor starters, valves, alarms, relays。

Legacy 125 VDC Systems: Power plants and 125 VDC control infrastructure。

Harsh & Hazardous Areas: Class G3 environments and Class 1 Div 2/Zone 2 locations。