{"product_id":"yokogawa-rb301-s2-rio-bus-interface-master-card","title":"Yokogawa RB301 S2 RIO Bus Interface Master Card","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa RB301\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRB301\u003c\/strong\u003e S2 RIO Bus Interface Master Card, operates as a dedicated hardware component for high-speed remote I\/O serial communication and bus arbitration within Yokogawa CENTUM CS 3000 and CENTUM VP DCS platforms. Operating across dual-redundant bus lines, the card manages data packet serialization, frame synchronization, and deterministic token passing between central processing units and remote node interface units.\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\u003eRB301\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.0 kg (6.61 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Rack-Mount Module Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSystem Backplane Bus Powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Interface Type\u003c\/td\u003e\n\u003ctd\u003eS2 RIO Bus Master Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRedundancy Support\u003c\/td\u003e\n\u003ctd\u003eDual-Redundant RIO Bus Line Configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Platform\u003c\/td\u003e\n\u003ctd\u003eYokogawa CENTUM Series DCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Category\u003c\/td\u003e\n\u003ctd\u003eRemote I\/O Bus Interface Master Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation \u0026amp; Field Signal Routing\u003c\/h3\u003e\n\u003cp\u003eThe RB301 incorporates optical galvanic isolation and channel-to-channel isolation circuitry across all backplane-to-bus transmission channels. This architecture isolates high-speed system bus logic from field-induced electrical transients, common-mode potential differences, and ground loop noise. The interface master maintains transparent pass-through for downstream field instrument data, preserving 4-20 mA HART loop protocol signal structures and digital FSK modulation across remote I\/O sub-networks.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the RB301 handle fault transfer in redundant bus configurations?\u003c\/p\u003e\n\u003cp\u003eA: When deployed in a dual-redundant configuration, the RB301 continuously monitors bus carrier signals and automatically switches data transmission to the secondary RIO line without interrupting CPU execution.\u003c\/p\u003e\n\u003cp\u003eQ: Can the RB301 be hot-swapped during active system operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, provided the host CENTUM rack backplane supports online insertion and removal, the RB301 can be replaced while the redundant partner card maintains active bus communication.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eESD Protection:\u003c\/strong\u003e Wear a grounded wrist strap attached to cabinet functional earth before handling or inserting the RB301 master card.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRack Insertion:\u003c\/strong\u003e Align the card edge guide rails squarely with the backplane slot, sliding the unit firmly until the latch levers click and lock into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoaxial Cable Connection:\u003c\/strong\u003e Tighten BNC or dedicated connector jackscrews on the S2 RIO bus cables to ensure low-impedance high-frequency shielding continuity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBus Termination:\u003c\/strong\u003e Verify that 75 ohm or designated line termination units are installed on unused terminal ports at both physical ends of the S2 RIO cable segment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth Grounding:\u003c\/strong\u003e Connect cabinet grounding bars directly to the system master earth bus with low-impedance copper braid to mitigate high-frequency signal noise.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52734516887832,"sku":"RB301 S2","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/RB301S2_fad5d538-6917-4508-9acd-01170aabb06c.png?v=1789871463","url":"https:\/\/www.innoplcsync.com\/products\/yokogawa-rb301-s2-rio-bus-interface-master-card","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}