GE DS2020FEXAG4 – Fiber-Optic Communication Expansion Board

Technical Specifications

• Manufacturer: General Electric (GE)
• Model: DS2020FEXAG4
• Series: Mark VI DS2020 Speedtronic
• Type: Fiber-Optic Communication Expansion Board (FEX)
• Communication Ports: 4 × fiber-optic ports (multi-mode, SC connector)
• Data Transfer Rate: 100 Mbps (full-duplex)
• Communication Protocol: GE IONet (proprietary), TCP/IP (optional)
• Fiber Type: Multi-mode fiber (62.5/125 μm), maximum distance 2 km
• Processor: High-speed communication processor
• Power Supply: +5 VDC (backplane)
• Power Consumption: Max 10 W
• Weight: ~0.8 kg
• Operating Temperature: 0°C to +60°C
• Certifications: CE, UL, CSA, IEC 61000-6-2

Key Features

1. Quad Fiber-Optic Ports: 4 independent multi-mode fiber ports support simultaneous connection to 4 remote I/O racks or external systems, expanding communication capacity.
2. High-Speed Full-Duplex Communication: 100 Mbps full-duplex data transfer ensures real-time, low-latency data exchange for time-critical turbine control applications.
3. Long-Distance Transmission: Multi-mode fiber supports up to 2 km communication distance, eliminating distance limitations of copper cables and enabling flexible system layout.
4. EMI Immunity: Fiber-optic communication is immune to electromagnetic interference (EMI) and radio frequency interference (RFI), ensuring stable data transmission in harsh industrial environments.
5. Seamless System Integration: Compatible with GE Mark VI IONet protocol; supports TCP/IP for integration with external DCS, SCADA, and HMI systems.

Application Scenarios

• Distributed Turbine Control: Mark VI system remote I/O expansion for gas/steam/hydro turbines in large-scale power plants.
• Long-Distance Data Exchange: Power plants with geographically dispersed turbine units or remote monitoring centers.
• System Integration: Connecting Mark VI turbine control systems to plant-wide DCS/SCADA systems in thermal, combined-cycle, and hydroelectric power plants.