Description
Foxboro P0904FH
Technical Specifications
- Processor: 32-bit industrial-grade RISC processor.
- Execution Speed: 0.1 µs/boolean instruction, 0.5 µs/floating-point instruction.
- Memory: 8MB program memory, 4MB data memory.
- Interfaces: Ethernet 10/100BaseTX, ControlNet, RS-232.
- Power: 24VDC supply, 10W power consumption.
Functional Features
- Advanced Control: Executes complex regulation, logic, timing, and sequential control.
- Massive Expansion: Supports up to 32 Series 200 FBMs natively, expandable to 128 via FEM100.
- Seamless Redundancy: Dual-module parallel architecture with bumpless hot-standby failover.
- Multi-Protocol Support: Native support for Modbus TCP/IP, ControlNet, and Ethernet/IP.
Application Scenarios
Deployed as the primary controller in large-scale petrochemical complexes, power plants, metallurgy, and water treatment facilities, fully compatible with Foxboro InTouch and Wonderware System Platform.
Performance Parameters
- Data Consistency: Bit-by-bit matching technology ensures zero data corruption.
- Network Speed: 100Mbps fiber optic Ethernet for Foxboro Evo control network.
- Environmental Rating: G3-class harsh environment compliant.
Material Composition
Enclosed in a rugged die-cast aluminum housing providing superior EMI shielding and thermal dissipation, with internally conformal-coated PCBs.
Structural Characteristics
- Dimensions: 140mm × 165mm × 45mm.
- Weight: 0.6kg.
- Protection: IP20 rated.
Working Principle
The RISC processor continuously scans field inputs via the high-speed bus, executes sophisticated control algorithms in real-time, outputs commands to actuators, and synchronizes data across the redundant fiber optic network.
Installation Requirements
- Must be securely seated in an I/A Series compliant control rack.
- Redundant 24VDC power supplies are required for hot-standby operation.
- Ambient temperature must be strictly maintained between 0℃ and 60℃.
Usage Precautions
- Never forcibly remove the processor while energized.
- Always perform a full system backup before executing firmware upgrades.
- Regularly clean air filters and cooling channels to prevent thermal throttling.




