FBC21 (P0951CL)

Basic Information

Model: FBC21 (Part Number: P0951CL)

Manufacturer: Foxboro (Schneider Electric)

Type: 200 Series Fieldbus Module (FBM), Analog Input

System: I/A Series DCS

Status: Obsolete (DCS spare part)

Key Features

Isolated Analog Input: 8-channel isolated analog input for 4–20 mA transmitters (e.g., pressure, flow, level, temperature).

High Precision: 16-bit resolution with ±0.1% accuracy for accurate process measurement.

Redundant Fieldbus: Dual 2 Mbps links for fault-tolerant communication to the DCS controller.

Hot-Swappable: Replaceable online with redundant fieldbuses—no system shutdown.

On-Board Diagnostics: LED status indicators + DCS-based fault detection for fast troubleshooting.

Rugged Construction: Withstands electrical noise, vibration, and temperature swings in industrial environments.

Typical Applications

Process Industries: Chemical, petrochemical, oil & gas (monitoring pressure, flow, level, temperature via 4–20 mA transmitters).

Power Generation: Boiler/turbine auxiliary parameter monitoring (e.g., steam pressure, water level, exhaust temperature).

Water Treatment: Monitoring of pump discharge pressure, flow rate, and tank level.

Legacy I/A Series: Direct replacement/expansion for existing Foxboro DCS installations.

Compatibility Notes

FBC21: 8-channel isolated analog input module (P0951CL)

FBC07: Field Control Processor (CPU, P0951EA)

FBC07B: 32-CH contact sense DI (P0951CJ)

FBC09: 32-CH digital input module (P0951CK)

All FBCxx modules mount on standard I/A Series baseplates.

Core Specifications

Input Channels: 8 channels, isolated

Signal Type: Analog input (4–20 mA / 0–20 mA, selectable)

Input Impedance: 250 Ω

Resolution: 16-bit

Accuracy: ±0.1% of full scale (25 °C)

Conversion Time: 100 ms per channel

Fieldbus: 2 Mbps, redundant (I/A Series)

Power Supply: 24 VDC ±10%

Power Consumption: Approx. 9 W

Operating Temperature: 0 °C to +60 °C

Storage Temperature: -40 °C to +85 °C

Environmental Rating: ISA S71.04 Class G3 (harsh industrial environments)

Mounting: Standard I/A Series baseplate

Dimensions: 140 mm × 165 mm × 45 mm

Weight: 0.7 kg