{"product_id":"lc81-b-yokogawa-interface-module-card","title":"LC81*B Yokogawa Interface Module Card","description":"\u003cp\u003eConfigured for field signal processing and bus data exchange in Yokogawa control systems, the \u003cstrong\u003eYokogawa LC81*B\u003c\/strong\u003e (\u003cstrong\u003eLC81\u003c\/strong\u003e Interface Module Card) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC81\u003c\/strong\u003e: Base module code designating the RL-Bus interface card architecture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*B\u003c\/strong\u003e: Revision suffix specifying internal PCB layout and circuit component designator level.\u003c\/li\u003e\n\u003c\/ul\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\u003eLC81*B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eRL-Bus Interface Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog Input Range\u003c\/td\u003e\n\u003ctd\u003e4 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e12 to 36 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Yokogawa Interface Card Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive bus backplane load (governed by 12 to 36 V DC input)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eYokogawa Loop Protocol \u0026amp; Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe LC81*B interface card conditions 4 to 20 mA analog input signals across its hardware channel array while executing data serialization over the RL-Bus link. Integrated galvanic isolation barriers mitigate common-mode noise propagation between field instrument circuits and internal system backplane logic. The module architecture maintains channel-to-channel isolation parameters to isolate digital 4-20 mA HART loop protocol signals from ambient high-frequency electrical interference.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What power supply range supports stable execution of the LC81*B interface module card?\u003c\/p\u003e\n\u003cp\u003eA: The board operates across an input voltage window of 12 to 36 V DC, accommodating nominal 24 V DC field loop power configurations.\u003c\/p\u003e\n\u003cp\u003eQ: Can the LC81*B process analog input signals below 4 mA without triggering signal fault conditions?\u003c\/p\u003e\n\u003cp\u003eA: The input circuitry continuously digitizes the full 4 to 20 mA range; values dropping significantly below 4 mA trigger live open-circuit diagnostic flags within the controller memory map.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eAlign the LC81*B card with the designated rack slot guide rails and push firmly until the rear connector seats into the RL-Bus backplane interface. Fasten top and bottom faceplate retention screws to ensure continuous chassis grounding and structural stability. Ensure field wiring for 4 to 20 mA analog loops uses twisted-shielded pairs, grounded at a single earth bus terminal inside the control cabinet to eliminate ground loops.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53317037392181,"sku":"LC81*B","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/LC81B.png?v=1787041885","url":"https:\/\/www.5gplc.com\/products\/lc81-b-yokogawa-interface-module-card","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}