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          Apter Power can prepare an IS200EMIOH1A quotation and provide access to applicable original GE documentation.

        IS200EMIOH1A

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        The General Electric IS200EMIOH1A is an Exciter Main I/O Board for EX2100 excitation systems, coordinating transformer measurements, contact inputs, relay supervision, and outgoing gate commands.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
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        Technical specifications for IS200EMIOH1A

        • Manufacturer:
          General Electric
        • Part Number:
          IS200EMIOH1A
        • Product Family:
          GE Excitation Control
        • Product Type:
          Exciter Main I/O Board
        • Stock:
          1
        • Board format:
          Single-slot, double-height VME-style board
        • Managed terminal boards:
          EPCT, ECTB, EACF, and EXHS
        • Primary signal inputs:
          Potential-transformer and current-transformer signals
        • Contact interface:
          Customer contact inputs and relay-driver outputs
        • Gate-command path:
          Logic-level pulses sent across the backplane to ESEL
        • Analog input selection:
          ±10 V dc or 4–20 mA
        • Analog sample rate:
          2,000 samples per second
        • Analog accuracy:
          Better than 1% of full scale
        • Relay outputs:
          Four Form C contacts through ECTB
        • Dedicated ECTB inputs:
          86G lockout and 52G generator-online contacts
        • Field-flashing control:
          53A and 53B contactor commands through EXHS
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Signal Inputs Relay Control Gate Routing Integration

        Features:

        • Concentrates transformer, contact and relay-status inputs for the regulator.
        • Supports selectable voltage or current-loop field signals.
        • Keeps logic-level gate commands separate from downstream power amplification.
        IS200EMIOH1A sits where several terminal-board functions converge, preserving distinct paths for measurement, protection indications and commanded outputs.

        The connected EPCT, ECTB, EACF and EXHS functions define which field signals reach the rack, while ESEL receives the outgoing firing logic.

        This separation allows an I/O fault to be traced at the terminal interface, main I/O stage or downstream selector path without treating the whole chain as one circuit.

        Apter Power can support sourcing and documentation requests for the General Electric IS200EMIOH1A Exciter Main I/O Board used in established EX2100 installations.
        General Electric IS200EMIOH1A Exciter Main I/O Board Manuals, Datasheets, Links Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

        Signal groups

        • Transformer signals: Potential- and current-transformer measurements arrive through dedicated terminal hardware.
        • Discrete inputs: Customer contacts and pilot-trip indications remain separate from analog regulation channels.
        • Analog selection: Field inputs can follow either a voltage or current-loop convention.
        • Controller handoff: Conditioned values are presented to the regulator as an organized signal set.

        Output verification

        • Relay commands: Commanded output state remains distinct from returned operating evidence.
        • Coil-current feedback: Electrical sensing indicates whether an output circuit is energized.
        • Contact feedback: Auxiliary contacts report the resulting field-side state.
        • Field flashing: EXHS carries the contactor commands used in the flashing sequence.

        Command path

        • Logic source: Six firing commands leave the main I/O stage at logic level.
        • Backplane transfer: The backplane carries those commands toward the selector hardware.
        • Source selection: ESEL determines which regulator source reaches the active bridge path.
        • Power amplification: EGPA or EHPA performs the downstream pulse amplification.

        Replacement context

        • Rack position: Confirm the EX2100 slot and double-height mechanical envelope.
        • Connector control: Label terminal-board connectors before disturbing installed wiring.
        • Selector destination: Trace the ESEL route used by the existing bridge configuration.
        • Functional check: Recheck relay feedback and field-flashing paths after installation.
        Description
        General Electric IS200EMIOH1A Exciter Main I/O Board serves as the main signal coordinator inside an EX2100 excitation system, accepting conditioned measurements and status from its terminal-board interfaces.

        Across IS200EMIOH1A, the I/O scope covers potential- and current-transformer signals, contact states, pilot-trip indications and relay supervision. Coil-current information and auxiliary-contact feedback give the controller two views of commanded relay behavior.

        Field analog channels handled by IS200EMIOH1A may be configured for either ±10 V inputs or 4–20 mA transmitters. Acquisition runs at 2,000 samples per second with accuracy better than one percent of full scale.

        Cabinet integration for IS200EMIOH1A is defined by its links to EPCT, ECTB, EACF and EXHS, plus the downstream ESEL selector. Those interfaces must match the installed wiring during replacement.
        Alternative Names
        EX2100 IS200EMIOH1A IS200 EMIO H1A GE IS200EMIOH1A IS200EM10H1A IS200-EMIO-H1A IS200EMIO H1A General Electric IS200EMIOH1A IS200 EMIOH1A
        Technical notes
        The single-slot IS200EMIOH1A uses a double-height faceplate, so replacement planning must allow for its full vertical hardware envelope.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Why might field analog readings change after IS200EMIOH1A is replaced?
        IS200EMIOH1A field channels must retain the installed ±10 V or 4–20 mA selection; a mismatched input convention can distort the controller value.
        How can a missing bridge-firing path involving IS200EMIOH1A be isolated?
        Trace the six logic commands from IS200EMIOH1A across the backplane to ESEL, then continue through the selected EGPA or EHPA amplifier route.
        What should be compared when IS200EMIOH1A commands a relay but the field device does not respond?
        For IS200EMIOH1A, compare commanded state with coil-current feedback and the auxiliary-contact return to separate an output-circuit fault from a feedback fault.
        Which connections should be identified before removing IS200EMIOH1A?
        Label the IS200EMIOH1A paths associated with EPCT, ECTB, EACF, EXHS, and the downstream ESEL selector before disturbing rack wiring.
        Why could a pilot-trip indication disappear after IS200EMIOH1A service?
        A missing IS200EMIOH1A pilot-trip indication calls for checking the applicable terminal-board contact path and its restored connector assignment.
        What mechanical detail matters when fitting IS200EMIOH1A into the rack?
        IS200EMIOH1A occupies a single slot with a double-height faceplate, so the slot position and full vertical envelope must remain clear.

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