FBM04A

Basic Information

Model: FBM04A

Manufacturer: Foxboro / Schneider Electric

Type: 4-channel isolated analog input + 4-channel isolated analog output composite module

System: I/A Series DCS

Status: Obsolete, used for spare replacement

Technical Specifications

Analog Input：

4 isolated channels, signal range 4–20mA / 0–20.4mA

Input impedance: 250Ω per channel

Resolution: 12 bit

Accuracy: ±0.05% full scale at 25℃

Analog Output：

4 isolated channels, signal range 4–20mA / 0–20.4mA

Maximum load resistance: 735Ω per channel

Resolution: 12 bit

Accuracy: ±0.05% full scale

General Parameters：

Fieldbus: 2 Mbps redundant fieldbus

Power supply: 24 VDC ±10%

Power consumption: Max 8 W

Operating temperature: -40℃ to +70℃

Environmental grade: ISA S71.04 Class G3

Mounting: Standard I/A Series baseplate

Hot swappable: Supported under redundant configuration

Key Features

Integrated 4 analog input and 4 analog output in one module, saving cabinet space.

Each channel adopts galvanic isolation to avoid ground loop interference and enhance anti-interference ability.

"A" version is upgraded in circuit stability and temperature adaptability compared with standard FBM04.

Supports redundant fieldbus communication to ensure stable data transmission and control output.

With self-diagnostic function and LED status indication.

Allows online hot-swap replacement without system shutdown.

Application

Collect 4–20mA analog signals from field transmitters such as pressure, flow, level and temperature.

Output 4–20mA control signals to drive valve positioners, I/P converters and regulating actuators.

Widely used in chemical, petrochemical, power, oil & gas and water treatment industries.

Suitable for field signal acquisition and loop regulation in I/A Series DCS system.