Schneider Electric / Invensys / Foxboro P0400YD FBM 03 RTD Input Module

The Schneider Electric/Invensys/Foxboro P0400YD FBM03 is an 8-channel RTD input module engineered for precision temperature acquisition in industrial process control systems. It converts resistance measurements from platinum, nickel, and copper RTD sensors into high-resolution digital signals compatible with the I/A Series control architecture. The module supports 2-wire, 3-wire, and 4-wire sensor configurations across a -200°C to +850°C temperature range, making it suitable for demanding applications in oil and gas, power generation, and chemical processing.

Technical Specifications

• 8 isolated, independent channels


• Supports Pt100, 120 Ω nickel, 10 Ω copper, and DIN/SAMA/IEC platinum and nickel standards


• Input range: 0 to 320 ohms per channel


• Temperature measurement range: -200°C to +850°C (-328°F to +1562°F)


• Sensor excitation: 0.75 mA dc


• 16-bit digital output resolution


• Update rate: 10 ms typical Accuracy and Performance


• ±0.1% of full scale for RTD input


• ±0.025% of span (±0.08 ohms)


• ±0.25°C accuracy


• Temperature coefficient accuracy: ±25 ppm/°C Power and Thermal


• Supply voltage: 24 VDC nominal (18 to 32 VDC operating range)


• Redundant input voltage: 26 to 42 V dc


• Power consumption: 3.5 W typical, 9 W maximum


• Heat dissipation: 9 W maximum Electrical Isolation


• Channel-to-channel isolation: 1500 V ac


• Withstand potential: 600 V ac for one minute between any channel and earth or between channels

Key Features

• 2-wire, 3-wire, and 4-wire RTD configuration support (note: 3-wire RTDs cannot be mixed with 2-wire or 4-wire within the same module)


• Integrated signal conditioning with minimal noise and drift


• Software-configurable conversion time


• FOXPRO FBM3 Fieldbus communication via redundant fieldbus architecture

Physical Specifications

• Dimensions: 120 mm (H) × 75 mm (W) × 50 mm (D)


• Weight: 0.3 to 0.4 kg

Compatibility & Integration Designed for Schneider Electric I/A Series control systems using FOXPRO FBM3 Fieldbus protocol for direct integration into distributed process control architectures.