Description
Foxboro FBM02 P0400YC
Technical Specifications
- Module Model: FBM02 (P0400YC)
- Channel Configuration: 8 Analog Input (AI) channels
- Signal Type: Multiple thermocouple types and millivolt (mV) signals
- Bus Interface: 2 Mbps Redundant Fieldbus
Functional Features
- High-Precision Cold Junction Compensation: Built-in isolated RTD reference junction compensation eliminates ambient temperature effects.
- Burnout Detection: Each channel detects thermocouple open circuits for timely alarm generation.
- Complete Electrical Isolation: Full isolation between channels, bus, and ground.
- Sigma-Delta Conversion: Advanced filtering rejects power line frequency noise.
Application Scenarios
Extensively used in high-temperature measurement applications such as boiler furnaces, reactors, and exhaust pipes.
Performance Parameters
- Update Rate: New readings every 25ms with configurable integration periods.
- Signal Accuracy: Extremely high precision with minimal error.
- Protection Rating: IP20.
Material Composition
Rugged extruded aluminum housing for superior EMI shielding. Internal PCBs are conformally coated for harsh environments.
Structural Characteristics
Compact FBM design with integrated red/green LED indicators. Backplane connector supports hot-swapping.
Working Principle
Thermocouple mV signals are amplified and converted via Sigma-Delta A/D, combined with cold junction compensation, and linearized according to thermocouple tables before transmission.
Installation Requirements
Use dedicated thermocouple extension wire or shielded twisted pair. Shield must be grounded at cabinet side only. Never run parallel to power cables.
Precautions for Use
Verify thermocouple polarity and type match software configuration. Never apply voltage or current signals to this module.
