{"product_id":"is200edexg1afa-general-electric-exciter-de-excitation-board","title":"IS200EDEXG1AFA |General Electric | Exciter De-Excitation Board","description":"\u003ch2\u003eGE IS200EDEXG1AFA Exciter De-Excitation Board\u003c\/h2\u003e\n\u003cp\u003eConfigured for SCR‑based de‑excitation control in GE Mark VIe excitation networks, the \u003cstrong\u003eGE IS200EDEXG1AFA\u003c\/strong\u003e (\u003cstrong\u003eIS200EDEXG1AFA\u003c\/strong\u003e Exciter De‑Excitation Board) provides direct firing‑circuit execution and conduction‑sense feedback for emergency field‑energy removal.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eIS200EDEXG1AFA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eGE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eMark VIe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eExciter De‑Excitation Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eSCR de‑excitation and conduction‑sense interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eTechnology\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eSurface‑mount PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAssociated Hardware\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eEXTB board, EMIO initiation, SCR firing circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConduction Sensors\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eHall‑effect sensing via flux ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eVoltage Hold‑Up\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eSupports firing during loss of control power\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity Licenses\u003c\/h3\u003e\n\u003cp\u003eAs part of GE’s Mark VIe excitation platform, the IS200EDEXG1AFA aligns with deterministic backplane timing used for field‑current shutdown. The SCR firing circuit receives redundant commands from the EXTB board, ensuring fixed‑cycle propagation of de‑excitation signals. Firmware flash compatibility resides at the controller and EMIO level; the EDEX board itself performs static electrical functions without programmable logic. I\/O density scaling is achieved through coordinated operation with conduction‑sense channels and break‑over diode networks, allowing multiple SCR devices to be fired without altering backplane communication velocity.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the IS200EDEXG1AFA be inserted or removed under power?\u003c\/strong\u003e A: No. Hot‑swap is not supported due to the risk of unintended SCR gate activation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the board impose additional load on the excitation backplane?\u003c\/strong\u003e A: The board draws power through its firing and hold‑up circuits. Backplane loading remains within standard Mark VIe excitation limits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the conduction‑sense feedback operate?\u003c\/strong\u003e A: Hall‑effect sensors detect field‑current flow through a flux ring, providing bipolar or unidirectional feedback depending on SCR or diode de‑excitation configuration.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the excitation panel is fully de‑energized before handling the board.\u003c\/li\u003e\n\u003cli\u003eMaintain correct alignment of the flux ring over the Hall‑effect sensors to ensure accurate conduction feedback.\u003c\/li\u003e\n\u003cli\u003eRoute SCR gate wiring separately from high‑energy field conductors to minimize induced noise.\u003c\/li\u003e\n\u003cli\u003eEnsure proper seating of connectors between EDEX, EXTB, and EMIO modules.\u003c\/li\u003e\n\u003cli\u003eConfirm break‑over diode jumper positions before commissioning to avoid over‑voltage conditions at the SCR gate.\u003c\/li\u003e\n\u003cli\u003eInspect LED indicators during startup to validate firing‑circuit readiness and conduction‑sense status.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":48164543561918,"sku":"IS200EDEXG1AFA","price":620.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/general-electric-is200edcfg1aed-exciter-direct-current-feedback-board-ujkeuas1rku.png?v=1759132183","url":"https:\/\/www.autooiltech.com\/ar\/products\/is200edexg1afa-general-electric-exciter-de-excitation-board","provider":"AutoOilTech Limited","version":"1.0","type":"link"}