GE DS200DCFBG1A | DC Power Feedback Board

The DS200DCFBG1A is a specialized DC Power Feedback Board (DCFB) engineered by General Electric. This critical component is an integral part of the Mark V Speedtronic turbine control system and is widely used across various GE drive platforms, including the DC2000, AC2000, CB2000, FC2000, ME2000, and EX2000 excitation systems. Its primary function is to provide regulated control-level power to the drive while simultaneously monitoring various electrical feedback signals to ensure the safe and stable operation of the turbine and motor drive assemblies.

⚙️ Key Technical Specifications

• Model: DS200DCFBG1A
• Manufacturer: General Electric (GE)
• Series: Mark V (Speedtronic) / EX2000
• Function: Power supply generation and AC/DC signal feedback
• Input Voltage: 38 – 115 VAC (from Control Power Transformer)
• Output Voltages: +5 VDC, ±15 VDC, ±24 VDC (Control levels); 115 VAC (Enclosure fans)
• Output Frequency: 0 – 500 kHz (VCO signals)
• Dimensions: Approximately 7.0 inches x 13.0 inches (17.8 cm x 33.02 cm)
• Weight: Approximately 1.3 lbs
• Country of Origin: USA

🔍 Product Information

For detailed wiring schematics, pin-out configurations, and comprehensive installation manuals (GEI-100028), please visit the GE DS200DCFBG1A product resource.

💡 Commonly Asked Questions

• What is the primary role of the DCFB board?

  The DCFB board converts incoming AC power from the Control Power Transformer into the stable DC voltages required for drive control cards. It also monitors critical signals like motor armature voltage/current and line voltage/current, converting them into frequency signals (VCO) for the control processors.

• What do the onboard diagnostic indicators mean?

  The board features two red LEDs (CR51, CR55) and one neon lamp (LT1). These are diagnostic indicators for fuse status. If an LED or neon light is lit, it typically signifies that the corresponding protective fuse (FU1, FU2, or FU3) has blown and requires inspection.

• Can this board be configured for different applications?

  Yes, the DS200DCFBG1A is highly versatile. It includes 12 configurable jumpers and 7 DIP switches that allow field technicians to adapt the board’s parameters to match the specific requirements of the drive or excitation system in which it is installed.

• How do I troubleshoot a suspected power issue?

  Start by verifying the input voltage from the transformer. Next, use the five onboard test points to check if the regulated output voltages (+5V, ±15V, ±24V) are present. If the drive is resetting, check the status of the /PSEN signal, which is affected by the regulation state of the +5V supply.

🏭 Recommended Series and Related Models

To maintain consistency and reliability within your control rack, the following models are frequently associated with the DCFB series:

1. DS200DCFBG1B
2. DS200DCFBG1BKC
3. DS200TCCAG1A
4. DS200PCCAG1A
5. DS200ACNAG1A
6. DS200ADVCG1A
7. DS200SDCCG1A
8. DS200LDCAG1A
9. DS200CTBAG1A
10. DS200SLCCG1A