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Exciter De-Excitation Board IS200EDEXG1ABA is produced by General Electric and is part of the Mark VI IS200 System. This model can be used with an EXTB board. The IS200EDEXG1ABA board will be used with SCR de-excitation.



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  • Part Number: IS200EDEXG1ABA
  • Manufacturer: GE Boards & Turbine Control
  • Series: Mark VI IS200

IS200EDEXG1ABA Technical Specifications

Functional Acronym/Abbreviation EDEX
Manufacturer General Electric Boards and Turbine Control
Model Type Exciter De-Excitation Board
Number of Sub-D pin Connectors Two
Operating Temperature Range 32 to 113ºF
Redundancy Type TMR or Simplex
Series Mark VI IS200

Product Description

Manufactured as an Exciter De-Excitation board the IS200EDEXG1ABA model is used to store energy from the attached generator, any of the stored energy from this model must be dispelled prior to the shutdown of the EDEX model. While the EDEX model is primarily used with the Mark VI Series it also has the capability to be used with EX2000 Generator Excitation Controls, GE Fanuc PLC-based Controls, Historians, HMIs, and Static Starters. The communication function which allows for communicating with the aforementioned systems is the Unit Data Highway (UDH). There is an Ethernet-based network that allows for a message-based protocol for sharing multiple nodes based on IP/UDP standards. 

One of the main boards that the EDEX board is used with is the EXTB board. The EXTB board is used to control the EDEX board. 

Some of the components of this model are Hall effect conduction sensors and resistors. There are eight conduction sensors which are located toward the middle of the board in two rows of four. Underneath the conduction sensors, there are two sub-D pin connectors. There are thirty-two groups of two resistors located on the right side of the board. 

When the IS200EDEXG1ABA board has been mounted in its chosen location it will be in the backup protection or control module. There is the potential for being used in a triple modular redundant application, the triple modular redundant application means that there are three separate yet independent control modules, IONets, and power supplies. The throughput of the TMR system allows for up to nine, twenty-one VME racks.  

Reviews For IS200EDEXG1ABA

Internal Review

The Exciter De-Excitation board can be used with the EXTB board and is used for SCR de-excitation. The IS200EDEXG1ABA model can also be used with a Microsoft Windows-based operating system. - AX Control Technician

Repair Services For IS200EDEXG1ABA

Type Lead Time Price Action
Repair Service 1-2 weeks $1270

Our highly skilled technicians can repair your IS200EDEXG1ABA. 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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IS200EDEXG1ABA Manuals, White Papers, Data Sheets, and Troubleshooting