Product Short Description
Product Brief Introduction: Rack expander interface module, establishes communication link between main controller rack and remote I/O expansion racks, expands system I/O capacity.
Technical Specifications
- Bus Interface: Trusted internal redundant bus
Description
- Mechanical Form: Single-width plug-in rack module
- Supply Voltage: 20–32 Vdc from backplane
- Operating Temperature: -20 °C ~ +70 °C
Function Features
- Support multiple-stage cascading of expansion racks
- Continuous communication channel fault detection
- TMR bus signal forwarding
- Hot swap compatible
Application Scenarios: Expansion of I/O quantity for safety instrument systems, distributed control cabinet interconnection, large-scale ESD system I/O extension
Performance Parameters
- Support multiple connected expander racks
- Real-time bus fault reporting
Material Composition: Reinforced plastic housing, high-speed differential signal PCB, gold-plated backplane connectors
Structure Characteristics: Plug-in module for Trusted rack, dual high-density rear connectors for bus extension, front status LED indicators
Working Principle: Receives redundant bus data from main processor rack, forwards communication data to connected expansion racks while monitoring communication integrity of each link.
Installation Requirements: Install in dedicated slot of Trusted rack; keep sufficient ventilation space around module.
Usage Notes: Follow maximum cascading quantity limit defined by system specification; avoid mixing different revision hardware without compatibility verification.
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