Description
Foxboro FBM26 P0900HU
Technical Specifications
- Module Type: High-Voltage DC Combination I/O Module
- Input Capacity: 8 channels of contact/125VDC inputs
- Output Capacity: 8 channels of contact outputs
- Bus Interface: Foxboro Module Fieldbus
Functional Features
- 125VDC Compatibility: Designed specifically for high-voltage DC control and protection circuits.
- Integrated I/O: Combines DI and DO in one module for space efficiency.
- Galvanic Isolation: Provides complete isolation between 125VDC field circuits and the 24VDC backplane.
- Hot-Swappable Design: Supports online maintenance for critical DC systems.
Application Scenarios
Deployed in power plant turbine control, DC motor drives, substation automation, and railway signaling systems operating at 125VDC.
Performance Parameters
- Operating Temperature: 0℃ to 60℃
- Ingress Protection: IP20
- Power Requirements: Backplane powered, 24 VDC nominal via 200 Series baseplate
Material Composition
Features high-voltage rated components with enhanced creepage distances on the PCB and flame-retardant housing.
Structural Characteristics
Standard 200 Series FBM form factor. Requires a specialized high-voltage Terminal Assembly for safe 125VDC connections.
Working Principle
High-voltage DC inputs are stepped down and isolated before digitization. Output relays are rated for 125VDC switching. Data is exchanged with the controller via the Module Fieldbus.
Installation Requirements
Install on a 200 Series baseplate. Strict adherence to high-voltage DC wiring standards is mandatory. Use only approved high-voltage TAs.
Usage Precautions
Extreme caution is required due to 125VDC potential. Verify zero energy state before servicing. Never use standard TAs with this module. Ensure proper arc suppression on relay outputs.
