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IS200EDCFG1A

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General Electric IS200EDCFG1A Exciter DC Feedback Board measures SCR-bridge field voltage and current and returns isolated frequency feedback to the EX2100 controller.
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Technical specifications for IS200EDCFG1A

  • Manufacturer:
    General Electric
  • Part Number:
    IS200EDCFG1A
  • Product Family:
    GE Excitation Control
  • Product Type:
    Exciter DC Feedback Board
  • Stock:
    1
  • Measured quantities:
    Generator-field current and SCR-bridge voltage
  • Current sensing element:
    DC shunt
  • Nominal shunt signal:
    100 mV
  • Amplifier output range:
    -5 V to +5 V
  • Voltage-scaling selections:
    7
  • Feedback conversion:
    Voltage-to-frequency
  • Optical frequency range:
    0-2 MHz
  • Conversion accuracy:
    1% of full-scale reading
  • 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 Shunt Channel Voltage Scaling Fiber Return Power & Startup

Features:

  • Creates isolated optical feedback from two high-voltage bridge measurements.
  • Uses independent voltage-to-frequency channels for field current and field voltage.
  • Adapts bridge voltage through seven selectable scaling networks.
The current circuit starts with the small millivolt signal produced by the dc shunt at the power-converter output.

A parallel voltage circuit senses the bridge output after resistor selection has reduced the high potential to the amplifier range.

Both converter outputs drive optical transmitters, keeping the controller-side EISB electrically separated from the power bridge.

Apter Power supports pricing enquiries and official-document access for the General Electric IS200EDCFG1A Exciter DC Feedback Board.
General Electric IS200EDCFG1A Exciter DC Feedback 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.

Following field-current conversion

  • Sensing point: The current shunt sits in the dc output path from the power converters.
  • Input level: Its nominal 100 mV signal feeds a differential amplifier.
  • Analog span: The amplifier drives a bipolar range from -5 V to +5 V.
  • Pulse output: A proportional optical frequency represents the measured field current.

Selecting the bridge-voltage range

  • Resistor banks: Jumper-selected networks attenuate bridge output before amplification.
  • Seven choices: Each selector position corresponds to a supported application range.
  • Common mode: The measurement circuit is designed around high bridge potential relative to control ground.
  • Matching rule: A replacement must copy the original selector position unless the bridge design changes.

Maintaining isolated controller feedback

  • Dual fibers: Separate optical channels carry current and voltage information.
  • EISB receiver: Both signals terminate at the controller communication interface board.
  • Noise immunity: Optical transmission avoids conductive pickup across cabinet sections.
  • Frequency span: Each converter produces a linear 0-2 MHz signal over its measuring range.

Commissioning the feedback circuits

  • Supply conversion: External bipolar dc power is converted into the internal logic and analog rails.
  • Polarity check: The shunt leads must preserve sign before field current is applied.
  • Range confirmation: Verify the voltage-selector setting against the installed SCR bridge.
  • Channel proof: Test current and voltage feedback separately because one path can operate while the other fails.
Description
General Electric IS200EDCFG1A Exciter DC Feedback Board is the EX2100 high-voltage-interface board that converts generator-field current and bridge voltage into isolated controller feedback.

Field current reaches IS200EDCFG1A as a nominal 100 mV shunt signal; a differential amplifier converts it to a -5 V to +5 V range before voltage-to-frequency conversion.

A separate path on IS200EDCFG1A scales bridge voltage through one of seven selector settings, allowing the same feedback architecture to accommodate the voltage range selected for the application.

Both measurement channels leave IS200EDCFG1A as 0-2 MHz optical pulse signals for the EISB, providing galvanic separation and strong immunity to cabinet electrical noise.
Alternative Names
IS200 EDCF G1A I5200EDCFG1A General Electric IS200EDCFG1A IS200EDCF G1A IS-200-EDCFG-1A GE IS200EDCFG1A IS200 EDCFG1A IS 200EDCFG1A
Technical notes
The two IS200EDCFG1A optical channels carry independent field-current and field-voltage frequencies, so one healthy channel does not validate the other.
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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.
Why can IS200EDCFG1A report current correctly while voltage feedback is wrong?
IS200EDCFG1A uses separate current and voltage converter paths, so inspect the voltage scaling and voltage optical channel first.
What should be checked when IS200EDCFG1A optical feedback is missing at EISB?
Verify both IS200EDCFG1A fiber paths, connector seating and board power before tracing the EISB receiver channel.
How can a wrong selector setting distort IS200EDCFG1A field-voltage feedback?
The seven IS200EDCFG1A settings scale different bridge-voltage ranges; a mismatch drives an incorrect frequency representation.
Why is a direct electrical continuity test unsuitable across the IS200EDCFG1A feedback link?
IS200EDCFG1A sends feedback optically to preserve isolation, so the electrical path does not continue through to EISB.
What can make IS200EDCFG1A current feedback saturate before the bridge reaches full load?
Check the IS200EDCFG1A shunt rating, polarity and differential-amplifier input because the nominal source is only 100 mV.
Which evidence separates an IS200EDCFG1A sensor fault from an EISB input fault?
Compare the IS200EDCFG1A optical output frequency with the EISB-received value for the same stable bridge condition.
What must remain matched when IS200EDCFG1A is replaced in another bridge cabinet?
The IS200EDCFG1A voltage-selector position, shunt polarity and the two fiber destinations must match the original application.