{"product_id":"yokogawa-rm81-a-rm81-centum-vp-relay-module-board","title":"YOKOGAWA RM81*A RM81 CENTUM VP Relay Module Board","description":"\u003ch2\u003eYOKOGAWA RM81*A Relay Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA RM81*A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eRM81\u003c\/strong\u003e Relay Module, operates as a dedicated hardware component for physical module termination and backplane signal routing within CENTUM VP and CENTUM CS 3000 systems. It provides mechanical retention and trace connectivity across eight I\/O slots to establish continuous power distribution and high-speed data flow between inserted cards and the main control node.\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\u003eRM81*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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard CENTUM VP \/ CS 3000 backplane chassis layout\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\u003ePassive system backplane board (Power distribution loss dependent on module loading)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Count\u003c\/td\u003e\n\u003ctd\u003e8 slots\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eCENTUM VP, CENTUM CS 3000\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; Backplane Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eYOKOGAWA RM81*A\u003c\/strong\u003e motherboard features channel-to-channel isolation architecture across its backplane copper traces to isolate individual card channels from adjacent operational slots. This physical galvanic boundary suppresses common-mode voltage fluctuations, crosstalk, and ground loop currents that occur during parallel signal processing. Furthermore, integrated noise-filtering trace geometries preserve analog accuracy and digital frame timing when routing 4-20 mA HART loop protocol communications through field interface units.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does removing or replacing a module in an individual slot disrupt backplane communication on neighboring slots?\u003c\/p\u003e\n\u003cp\u003eA: No, the board maintains isolated signal lines for each slot position. However, operators must observe Yokogawa hot-swap guidelines to prevent bus transients during live insertion or removal.\u003c\/p\u003e\n\u003cp\u003eQ: How does the motherboard maintain power distribution stability across all 8 populated slots?\u003c\/p\u003e\n\u003cp\u003eA: Heavy-gauge copper distribution planes embedded within the multi-layer printed circuit board minimize voltage drop and maintain balanced DC supply levels under full module load conditions.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the \u003cstrong\u003eYOKOGAWA RM81*A\u003c\/strong\u003e backplane unit firmly inside the target system enclosure using specified mounting fasteners. Connect the main ground lug directly to the cabinet instrument ground (IG) bus via a short, low-impedance grounding braid to divert electrostatic discharges away from sensitive system traces. Ensure all field wiring harnesses maintain proper strain relief and remain separated from high-voltage AC cables. Confirm all module slot locking latches engage fully prior to powering up the system bus.\u003c\/p\u003e","brand":"YOKOGAWA","offers":[{"title":"Default Title","offer_id":51179276861752,"sku":"RM81*A","price":265.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/884.jpg?v=1788940708","url":"https:\/\/www.automodulexpert.com\/products\/yokogawa-rm81-a-rm81-centum-vp-relay-module-board","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}