{"product_id":"820-0154-ge-wesdac-d20-s-input-module-logic-panel","title":"820-0154 GE Wesdac D20 S Input Module Logic Panel","description":"\u003cp\u003eConfigured for status point processing and discrete signal acquisition in Wesdac D20 RTU automation architectures, the \u003cstrong\u003eGE 820-0154\u003c\/strong\u003e (\u003cstrong\u003e820-0154\u003c\/strong\u003e Input Module Logic Panel) provides direct physical\/electrical execution.\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\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e820-0154\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE \/ GE Multilin \/ Harris\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eLogic Backplane Powered (5 VDC Bus)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eStatus Input Logic Panel (D20 S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eWesdac D20 Substation Automation \/ RTU System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Processing\u003c\/td\u003e\n\u003ctd\u003eMulti-Channel Digital Input Filtering \u0026amp; Latching\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Type\u003c\/td\u003e\n\u003ctd\u003eSubrack Card Guide Mount\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 and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 820-0154 logic card interfaces with the primary D20 processor backplane to manage status point scanning without degrading backplane bus communication velocity. Onboard logic circuits execute hardware filtering, debounce processing, and sequence-of-events (SOE) time-tagging prior to bus transmission. This physical layer offloads raw contact scanning from the main processor, maintaining deterministic polling speeds and ensuring firmware flash compatibility across legacy D20 subrack revisions and master processor cards.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 820-0154 logic card be inserted or removed while the D20 subrack is powered?\u003c\/p\u003e\n\u003cp\u003eA: Power should be isolated from the rack backplane before inserting or extracting the board to prevent logic glitches or bus interface damage.\u003c\/p\u003e\n\u003cp\u003eQ: How does the 820-0154 logic panel interface with field contact wiring?\u003c\/p\u003e\n\u003cp\u003eA: Field wiring connects via dedicated inter-module ribbon cables routed from the rear termination assemblies to the logic panel front\/edge connectors.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the D20 subrack chassis before installing or replacing the 820-0154 module.\u003c\/li\u003e\n\u003cli\u003eAlign the circuit board edges with the subrack card guides and slide the card into the target slot position.\u003c\/li\u003e\n\u003cli\u003ePush firmly on the front ejection levers to seat the rear multi-pin connector securely into the backplane socket.\u003c\/li\u003e\n\u003cli\u003eTighten the top and bottom panel thumbscrews to secure the card frame and establish chassis ground continuity.\u003c\/li\u003e\n\u003cli\u003eAttach the inter-module signal cables to the front header connectors, verifying connector key orientation.\u003c\/li\u003e\n\u003cli\u003eRe-energize the D20 rack power supply and check the module status LED indicators for normal logic initialization.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":53271553540405,"sku":"820-0154 WESDAC D20 S","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/820-0154WESDACD20S.png?v=1786503393","url":"https:\/\/www.5gplc.com\/products\/820-0154-ge-wesdac-d20-s-input-module-logic-panel","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}