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  • 4.80 (5)
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Exciter Main I/O Board part IS200EMIOH1A is from the EX2100 series. This board manages the I/O from several other terminal boards and has PT and CT signals. One of the primary functions is to send gate pulse signals over the backplane to the ESEL and then the EGPA.



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  • Part Number: IS200EMIOH1A
  • Manufacturer: GE Industrial Systems
  • Series: EX2100 Excitation Control

IS200EMIOH1A Technical Specifications

Board Type Exciter Main Input/Output
Dimensions L: 9.25 Inches W: 6.5 Inches
Function To Manage I/O from ECTB, EACF, EXTB, and EPCT Terminal Boards
Function of LEDs Status and Power
Quantity of LEDs 2, Located on front plate
Weight Approximately 2 pounds

About the IS200EMIOH1A

The primary function of the Exciter Main Input/Out IS200EMIOH1A board is to manage all of the inputs/outputs from the ECTB, EACF, EXTB, and EPCT terminal boards. This board is a double-height-versa module Eurocard and is also single-slotted. Another primary function of the IS200EMIOH1A is to send gate pulse signals from the backplane to the ESEL board, after the signals have been received by the ESEL board the signals will then be sent to the EGPA board which is located in the power conversion cabinet.

When controlling the inputs and outputs of other terminal boards, the IS200EMIOH1A will control contact inputs, pilot trip relay drivers, PT and CT signals, and output relay drivers. As the EMIO board connects to the EXTB board the EMIO board will initiate de-excitation, which means that the EMIO board also controls the EDEX board that the EXTB is connected to. 

When using the IS200EMIOH1A board the best manual to use is the GEI-100453 IS200EMIO Exciter Main I/O Board manual, but as that manual is difficult to find, the GEH-6632 EX2100 Excitation Control User’s Guide has information related to the EMIO board on page forty-eight. 

Frequently Asked Questions about IS200EMIOH1A

If the EX2100 Controllers are being used in simplex system mode what will the IS200EMIOH1A do?

If the EX2100 Controllers are operating in simplex mode then the voltage signals will be sent through the J305 connector. Once the signals have been sent through the J305 connector they will be sent to the EMIO board in the M1 Controller. 

The IS200EMIOH1A board controls field flashing relays. Which field flashing relays does the IS200EMIOH1A board control and how?

The IS200EMIOH1A board controls the 53A and 53A field flashing relays, this function is done so through the drivers on the EMIO board. 

What parts of the EBKP Backplane is the IS200EMIOH1A model connected to?

The IS200EMIOH1A board is connected to Section C as well as the M1 and M2 Controllers. 

The EPCT board provides an analog input for customer use, how does the IS200EMIOH1A board interact with this function?

When the EPCT board is used for providing analog inputs the EMIO board will sample the input at 2000 samples per second, the accuracy when this occurs is better than 1% full scale.

Reviews For IS200EMIOH1A

Internal Review

The IS200EMIOH1A board controls many of the terminal boards within the EX2100 series through PT and CT currents along with many other input/output functions. - AX Control Technician

Repair Services For IS200EMIOH1A

Type Lead Time Price Action
Repair Service 1-2 weeks $1170

Our highly skilled technicians can repair your IS200EMIOH1A. 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
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All Motors: 1 Year
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