{"product_id":"yokogawa-rb401-s4-rio-bus-module","title":"YOKOGAWA RB401\/S4 RIO Bus Module","description":"\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA RB401\/S4\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRB401\u003c\/strong\u003e RIO Bus Module, operates as a dedicated hardware component for remote I\/O bus communication and backplane interface within Yokogawa Centum CS platforms.\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\u003eRB401\/S4\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\u003e0.50 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Rack Mount Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard backplane draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Architecture\u003c\/td\u003e\n\u003ctd\u003eRemote I\/O (RIO) Bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Style\u003c\/td\u003e\n\u003ctd\u003eStyle S4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm Factor\u003c\/td\u003e\n\u003ctd\u003eRack Mount PC Board\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel-to-Channel Isolation \u0026amp; Bus Communications\u003c\/h3\u003e\n\u003cp\u003eThe RB401\/S4 remote I\/O bus interface module incorporates hardware galvanic isolation to ensure signal integrity across serial RIO network paths. Optical barriers protect control processing logic from high-voltage field transients, ground loops, and electromagnetic noise on long-distance I\/O communication links. This isolation prevents common-mode voltage interference from degrading signal transmission between central processor units and distributed remote field terminal units.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the significance of the S4 designation on the RB401 module?\u003c\/p\u003e\n\u003cp\u003eA: The S4 code designates Style 4 hardware revisioning, reflecting specific backplane pin configurations and updated component tolerances while maintaining functional compatibility with standard RIO communication racks.\u003c\/p\u003e\n\u003cp\u003eQ: How is signal degradation minimized on long RIO bus cable runs?\u003c\/p\u003e\n\u003cp\u003eA: The onboard line transceiver circuitry provides signal conditioning and differential signaling to suppress electromagnetic interference and cross-talk across shielded twisted-pair field bus cabling.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure main cabinet power is isolated before seating the board into the designated rack slot.\u003c\/li\u003e\n\u003cli\u003eAlign the circuit board edges with the card guide tracks in the rack frame prior to inserting the rear edge connectors.\u003c\/li\u003e\n\u003cli\u003eApply uniform pressure on the module handles until the backplane connector locks firmly into position.\u003c\/li\u003e\n\u003cli\u003eFasten all panel retention screws to secure mechanical grounding and prevent vibration-induced loosening.\u003c\/li\u003e\n\u003cli\u003eTerminate the RIO communication cable shielding directly to the primary cabinet ground busbar using standard low-impedance grounding clamps.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53327065612597,"sku":"RB401 S4","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/RB401_e295e053-5644-481a-99a1-ff1a6304ee8c.jpg?v=1787102140","url":"https:\/\/www.5gplc.com\/products\/yokogawa-rb401-s4-rio-bus-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}