Description
Foxboro RH916DE
Technical Specifications
- Slot Count: 16 independent slots for Series 200 FBMs.
- Installation Orientation: Horizontal only.
- Bus Speed: 2 Mbps redundant fieldbus.
- Power Supply: Dual 24 VDC redundant power inputs.
- Mounting: Standard 35 mm DIN rail or cabinet rack.
Functional Features
- Passive Backplane Architecture: Contains no active electronic components, eliminating a major point of failure and ensuring high system reliability.
- Redundant Bus & Power: Supports dual fieldbus paths and dual power feeds to prevent single-point failures.
- Hot-Swap Capability: Allows individual FBM modules to be inserted or removed without powering down the baseplate or affecting other modules.
- DIP Switch ID: Features built-in DIP switches for baseplate address identification, enabling the controller to recognize the physical location.
Application Scenarios
Used as the primary I/O carrier in control cabinets for medium-scale distributed control applications in oil and gas, chemical, and power generation plants.
Performance Parameters
- Bus Termination: Automatic or manual termination options.
- Operating Temperature: 0°C to 60°C.
- Humidity: 5% to 95% non-condensing.
Material Composition
Constructed from high-quality, flame-retardant industrial plastics with gold-plated connector contacts to ensure reliable, low-resistance electrical connections over the product’s lifespan.
Structural Characteristics
A rigid, horizontal PCB with 16 evenly spaced male connectors. Includes mounting holes for DIN rail or direct screw mounting, and clear silkscreen labeling for slot identification.
Working Principle
Acts as a passive electrical distribution network. It routes 24 VDC power from the power supply to each slot and provides the high-speed fieldbus communication path between the Field Control Processor (FCP) and the plugged-in FBM modules.
Installation Requirements
Must be mounted horizontally on a standard DIN rail or secured directly to a cabinet backplane. Ensure adequate clearance above and below for airflow. Connect redundant power supplies to the designated terminals.
Usage Precautions
Always verify the DIP switch settings match the engineering configuration before powering up. Never force an FBM into a slot; ensure proper alignment. Ground the baseplate chassis to the cabinet ground stud.
