{"product_id":"lc51-a-rl-bus-yokogawa-communication-card","title":"LC51*A RL-BUS Yokogawa Communication Card","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa LC51*A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eLC51\u003c\/strong\u003e RL-BUS Communication Card, operates as a dedicated hardware component for high-speed deterministic bus data exchange within Yokogawa CENTUM CS and CS 3000 control system racks.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC51\u003c\/strong\u003e: Base model code designating the primary RL-BUS communication card interface hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e*A\u003c\/strong\u003e: Revision or hardware option suffix indicating board assembly circuit revision 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\u003eLC51*A\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\u003eBus Interface\u003c\/td\u003e\n\u003ctd\u003eRL-BUS communication protocol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e45.7 cm x 5.1 cm x 17.8 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard backplane rail current draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eYokogawa Deterministic Communication \u0026amp; Bus Isolation\u003c\/h3\u003e\n\u003cp\u003eThe LC51*A card handles deterministic token-passing communication over the internal RL-BUS network to interconnect distributed process controllers and I\/O subnodes. Integrated physical layer isolation prevents common-mode noise propagation across the communication backplane, safeguarding real-time data transmissions from field device loops—including 4-20 mA HART loop protocol interfaces—against transient electrical ground noise.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does replacing an LC51*A communication card disrupt communication across non-redundant RL-BUS segments?\u003c\/p\u003e\n\u003cp\u003eA: Removing the card from a single-bus node immediately breaks the physical token path on that segment; redundant RL-BUS architecture is required to maintain active communication during card removal.\u003c\/p\u003e\n\u003cp\u003eQ: How does the LC51*A card handle backplane electrical noise during high-speed data transmission?\u003c\/p\u003e\n\u003cp\u003eA: The card incorporates transformer-coupled galvanic isolation and filtering network components at the bus interface to attenuate ground potential variations and EMI.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eAlign the LC51*A communication card vertically with the assigned RL-BUS slot guide rails inside the rack frame, pushing firmly until the backplane connectors fully lock. Tighten top and bottom faceplate retention screws to ensure chassis shield ground continuity. Route all coaxial or twisted-pair bus cables through dedicated cabinet cable channels, maintaining strict physical separation from high-voltage AC distribution power wiring.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53317034606901,"sku":"LC51*A","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/LC51A.png?v=1787041605","url":"https:\/\/www.5gplc.com\/products\/lc51-a-rl-bus-yokogawa-communication-card","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}