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GE DS200DCFBG2BNC
Product Name: DC Feedback and Power Supply Board for Mark V Speedtronic
Product Introduction: The DS200DCFBG2BNC is a DC feedback and power supply board developed by General Electric for the Mark V Speedtronic gas and steam turbine control system. It supplies regulated DC power to the control rack and handles critical input/output signal routing for closed-loop turbine control.
Detailed content
Technical Specifications:
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Manufacturer: General Electric (GE)
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Product Type: DC Feedback Board / DC Power Supply Board
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Target System: Mark V Speedtronic Gas & Steam Turbine Control
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Connector Configuration: 18 plug connectors and 9 stab connectors
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Protection: 3 dedicated fuses for power supply protection
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Indicators: 2 LED lights and 1 neon indicator (fuse status)
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Adjustments: 7 DIP switches (AC line voltage, DC bridge/motor feedback)
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Test Points: 5 TP test points for voltage and signal checks
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Component Count: 7 transformers, 1 relay, >50 resistor networks
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Revision Level: B-rated primary, N-rated secondary, C-rated artwork
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Weight: Approx. 1.36 kg (3 lbs)
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Power Supply: +5 V DC from backplane, regulated DC outputs for control circuit supply
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Operating Temperature: -25°C to +70°C
Functional Features: The board carries three distinct hardware revisions (B, N, C) that alter performance specs from the original DS200DCFBG2 parent board. The 3-fuse protection circuit prevents cascading electrical faults. The 7 DIP switches allow selection of AC line voltage and tuning of DC bridge feedback.
Application Scenarios: Gas turbine power generation, steam turbine management, and legacy plant maintenance for discontinued Mark V systems. The board’s 9 stab connectors ensure stable signal transfer, preventing erratic turbine behavior during peak load.
Working Principle: Within the Mark V Speedtronic system, the DS200DCFBG2BNC sends and receives critical input/output signals while maintaining stable DC output. The transformers and resistor networks handle signal conditioning, while the fuses and indicators provide visual fault detection.
Installation Requirements: Verify the exact B/N/C revision requirements before installation. Ensure proper seating of the 18 plug and 9 stab connectors.
Usage Precautions: When the neon/LED indicators are lit, the power supply fuse is blown—check the 3 dedicated fuses immediately and replace with identical rating. For turbine speed/power fluctuations, inspect connectors for seating issues or oxidation. Use the 5 TP test points to verify voltage signals if no DC output is present.
