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3 year warranty

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  • 5.00 (3)
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The EX2100e Direct Current (DC) Feedback Board IS200EDFFH1A was produced by General Electric to measure field voltages and field currents at the SCR bridge. When being operated the field voltages and field currents will be interfaced with the connected Excitation Control Auxiliary Interface board.



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  • Part Number: IS200EDFFH1A
  • Manufacturer: GE Industrial Systems
  • Series: EX2100e Excitation Control

IS200EDFFH1A Technical Specifications

Part/Model Number IS200EDFFH1A
Board Description EX2100e DC Fanned Feedback Board
Manufacturer General Electric Company USA, GE Industrial Systems
Part-Specific Manual GEI-100770
Functional Acronym/Abbreviation EDFF
Quantity of Redundant Controls 3, M1, M2, and C
Series EX2100e
Wiring Board Description I/O Terminal Board
Power Supply 28 VDC

Product Description

The IS200EDFFH1A board is one of the many I/O terminal boards that is part of the EX2100e series produced by General Electric. The primary function of the EX2100e DC Fanned Feedback (EDFF) board is to measure voltages and field currents at the SCR bridge, and well then send the signals to the EX2100e Excitation Control Auxiliary Interface (EAUX). During operation, this board will need a power supply of twenty-eight volts of direct current. 

The IS200EDFFH1A board has a fiber-optic ink which provides voltage isolation between the EAUX and EDFF boards, as well as high-noise immunity. During operation the EDFF board with scale and convert field voltages and currents at the regulator/exciter output into frequency feedback signals. This board is comprised of V-F (voltage-to-frequency) converter circuits. One of the circuits is used for field voltage feedback and the extra is used for field current feedback. 

The IS200EDFFH1A board is part of the High Voltage Interface within the EX2100e series. When using this board please refer to the GEH-6781L EX2100e Excitation Control Users Guide for information. The EDFF board does have a part-specific manual labeled GEI-100770 but it is rather difficult to find online which is why we recommend using the GEH-6781 manual with the EDFF board. 

Reviews For IS200EDFFH1A

Internal Review

The IS200EDFFH1A is an Exciter DC Fanned Feedback Board that is a critical part of a GE EX2100 Excitation Control System. While the IS200EDFFH1A rarely faults, errors, or becomes defective, keeping a stockroom backup is always advisable to avoid downtime. The IS200EDFFH1A requires a jumper configuration during installation to match the application specific setting but the rest of the process is not complicated or in-depth. We rate the IS200EDFFH1A as a 5 star board for its design, reliability, and ease of installation. - AX Control Technician

Repair Services For IS200EDFFH1A

Type Lead Time Price Action
Repair Service 1-2 weeks $1889

Our highly skilled technicians can repair your IS200EDFFH1A. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
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