DS200AAHA1	GE Turbine Control	Mark V

DS200AAHA1	GE Turbine Control	Mark V

Home GE Boards & Turbine Control EX2100 & EX2100e Excitation Control IS200EDEXG1A

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IS200EDEXG1A

4.93 (14)
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4.93 (14)
Click a star to rate this product

IS200EDEXG1A Exciter De-Excitation Board Made in the U.S.

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Part Number: IS200EDEXG1A
SKU: GBTC-56681

Manufacturer: GE Industrial Systems
Series: EX2100 Excitation Control

Description
Repairs
Warranty
Manuals

IS200EDEXG1A Technical Specifications

Alphanumeric Catalog Number	IS200EDEXG1A
Common Revisions	ABA
Configurable Jumpers	JP1, JP2, JP3, JP4, JP5, JP6
Functional Acronym (Abbreviation)	EDEX
Manual	GEI-100466 (Series Manual GEH-6632)
Manufacturer	GE Industrial Systems, General Electric Company USA
Product Type	De-Excitation Module Main Board
Repairable Y/N	Yes
Series	EX2100 Excitation Control System
Shipping Weight	3.5 lb
Version	Group 1 (G1) - Designed for SCR De-Excitation

About the IS200EDEXG1A

IS200EDEXG1A Exciter De-Excitation Board (EDEX).
System: Part of the EX2100 Excitation Control System Series.
Function: Bridge and protection board; dissipates generator energy upon shutdown.
Revision: Modified version of IS200EDEXG1, with an A-rated functional revision.

Key Features & Operation

Control: Typically controlled by the EXTB module.
Conduction Sensing: Provides conduction sensing feedback.
Voltage Retention: Ensures operation during power failure, enabling SCR de-excitation firing.
SCR Firing: Fires when two control inputs are true, or anode-to-cathode voltage exceeds a set value.
Versions:
- Group 1 EDEX boards: For SCR de-excitation.
- Group 2 EDEX boards: For diode de-excitation.
Sensors: Equipped with Hall effect conduction sensors for field current discharge.

Electrical & Hardware Details

Power Input: Receives 24 VDC from the ESPM module, then converts it to 125 VDC.
Voltage Protection: Heavily populated with electrolytic drum-style capacitors and other voltage-limiting components (resistors, transistors, diodes, ICs).
Coating: Normal PCB coating style.
Manufacturing Origin: GE Energy's Salem, Virginia factory.
Revision A: Denotes an A-rated primary functional revision.

Role in EX2100 System

Central Component: Acts as the central component of the EX2100 Series' de-excitation module.
Provides: SCR de-excitation firing, conduction sense feedback reporting, and failsafe voltage protection.
Related Products: One of many EX2100/EX2100e Series exciter bridge and protection products (e.g., IS200EXAM, crowbar module).

Frequently Asked Questions about IS200EDEXG1A

What are the shutdown operations on the IS200EDEXG1A board?

There are two shutdown operations on the IS200EDEXG1A board. One is a normal shutdown which is a stop that is initiated by an operator, the bridge will be fired at retard limit which allows sufficient time for the field to decay before the field contactors are opened. The second shutdown is an abort stop, the field contactors in this shutdown will be opened immediately.

The EDEX board is typically controlled by the EXTB board, if the EDEX board fails can the EXTB board initiate de-excitation?

Yes. The EXTB board can initiate de-excitation if necessary.

Can more than one EDEX module be connected?

Yes! It is possible to connect more than one de-excitation module with one EDEX board configured to be the Master while the remaining de-excitation modules are configured to be Slave modules. If more than one module has been connected then a firing control signal will be sent to the Master module and will then be relayed to the Slave modules, firing all modules simultaneously.

There are two groups of EDEX models, what is the difference between the two?

The difference between the two EDEX models is that the group one board is designed specifically for SCR de-excitation and the group two board is designed for diode de-excitation.

Reviews For IS200EDEXG1A

Internal Review

(5.0)

The IS200EDEXG1A De-Excitation Board is a complex board but is usually repairable. Often the onboard capacitor decay/fail and are in need of replacement. The re-installation process however is quite simple and requires all cables to be reattached and jumpers aligned relative to the application requirements. This IS200EDEXG1A product makes use of a normal EX2100 Series assembly, normal PCB coating style, and finally an A-rated functional product revision; likely the most-common product revision across the entire Mark Series product suite. Available for repair/replacement. - AX Control Lead Technician

Repair Services For IS200EDEXG1A

Type	Lead Time	Price	Action
Repair Service	1-2 weeks	$945

Our highly skilled technicians can repair your IS200EDEXG1A. 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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