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DS200DCFBF1AAB - DC Feedback Power Supply Board is available in stock which ships the same day.
DS200DCFBF1AAB - DC Feedback Power Supply Board comes in UNUSED as well as REBUILT condition.
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SPECIFICATIONS:
Part Number: DS200DCFBF1AAB
Manufacturer: General Electric (GE)
Series: Mark V / Innovation Series
Product Type: DC Feedback Power Supply Board
Functional Acronym: DCFB
Input Voltage: 38 to 115 VAC (sourced from CPT)
Output Voltages: +5 Vdc, +/- 15 Vdc, +/- 24 Vdc
Power Requirements: Multi-rail regulation for control levels
Mounting: Rack-mounted / Internal Cabinet
Dimensions: 17.8 cm wide x 33.02 cm
Availability: In Stock
Country of Origin: USA
FUNCTIONAL DESCRIPTION:
The DS200DCFBF1AAB is a DC Feedback Power Supply Board manufactured by General Electric as part of the Mark V and Innovation Series turbine control and drive systems. As a DCFB module, its primary role is to deliver regulated control-level power to the drive while providing critical feedback monitoring for the system's power conversion components. It processes AC inputs from the Control Power Transformer (CPT) to generate the stabilized voltages required by the Drive Control Card (SDCC/LDCC). Additionally, it serves as the interface for monitoring armature current, motor field current, and AC line voltages, ensuring the system operates within safe mechanical and electrical parameters.
POWER SUPPLY & REGULATION ARCHITECTURE:
The DC Feedback Power Supply Board utilizes a robust regulation circuit to convert variable AC inputs into precise DC rails. The board rectifies 38 VAC inputs to create filtered +/- 24 Vdc sources, which are further regulated to produce +15 Vdc and -15 Vdc outputs (rated at 0.8 A). A high-current +5 Vdc (4 A) rail is also generated to power the primary logic and microprocessor functions. The board includes a dedicated /PSEN (Power Supply Enable) signal; if the +5 Vdc rail falls out of regulation, this signal resets the SDCC/LDCC microprocessor to prevent erratic control behavior during brownouts or surges.
VCO & FEEDBACK INTERFACE:
A core feature of the DC Feedback Power Supply Board is its Voltage-Controlled Oscillator (VCO) circuitry. This section transforms analog input voltages, such as bridge voltage and motor voltage, into frequency signals ranging from 0 to 500 kHz (with a 250 kHz standard center). These frequency-encoded signals are transmitted via the 1PL connector to the control boards, providing a high-integrity, noise-resistant feedback loop. This architecture allows the control system to accurately monitor the SCR bridge performance and shunt millivolt signals without interference from the high-power switching environment.
DIAGNOSTIC & PROTECTIVE FEATURES:
For real-time health monitoring, the board is equipped with several diagnostic tools:
REVISION COMPATIBILITY & SYSTEM INTEGRATION:
The F1AAB suffix denotes a specific functional and artwork revision designed for compatibility with a wide range of GE IGBT and SCR drives, including the DC2000, AC2000, and EX2000 series. This revision includes updated AC/DC monitoring circuits and specialized DIP switch banks (SW4, SW5, SW7) used to scale feedback voltages and select burden resistance for AC line current transformers (ACCTs). The board is engineered for direct mechanical replacement in Mark V racks, requiring no hardware modification when replacing legacy DCFB iterations.
WHY BUY FROM WOC:
WOC maintains the most extensive inventory of OEM replacement parts for GE Speedtronic and Excitation systems, ensuring your operations remain online with minimal lead time. We provide both unused and meticulously rebuilt boards, all backed by a comprehensive warranty. Our global logistics team can ship the DS200DCFBF1AAB the same day, and our technical specialists are available 24/7 to assist with troubleshooting or installation guidance. For competitive pricing and immediate availability, contact our team today.
What is the DS200DCFBF1AAB?
It is a DC Feedback Power Supply Board manufactured by General Electric for the Mark V and Innovation Series turbine control systems. It acts as the central power regulator for the drive’s control logic and the primary feedback link for monitoring bridge and motor performance.
What is the role of the DCFB board in a Mark V system?
The DC Feedback Power Supply Board acts as both the power source for control logic and the primary feedback link for the drive. It provides regulated DC power while encoding bridge and motor voltage data into frequency signals for the main processor to interpret.
Does this board support enclosure fan power?
Yes. The DCFB board routes 115 VAC power to the enclosure fans. This circuit is protected by fuse FU1 and monitored by the LT1 neon indicator to ensure the cooling system remains operational.
How do the DIP switches (SW4, SW5, SW7) affect operation?
These switches are used to configure the board for specific external hardware. SW4 and SW5 scale the bridge and motor voltage feedback for the VCO circuits, while SW7 is used to select the proper burden resistance for AC line current transformers, ensuring accurate current monitoring.
