{"product_id":"relay-output-terminal-board-yokogawa-sarm55w","title":"Relay Output Terminal Board | Yokogawa SARM55W","description":"\u003ch2\u003eYokogawa SARM55W Relay Output Terminal Board\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa SARM55W\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eSARM55W\u003c\/strong\u003e relay output terminal board, operates as a dedicated hardware component for discrete contact actuation within Yokogawa FIO digital output interface systems. Configured for field device switching in CENTUM VP \/ CS 3000 architectures, the \u003cstrong\u003eYokogawa SARM55W\u003c\/strong\u003e (\u003cstrong\u003eSARM55W\u003c\/strong\u003e Relay Output Terminal Board) provides direct electrical relay execution between DO modules and external load circuits.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: Yokogawa standard relay output terminal assembly family for FIO systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55W\u003c\/strong\u003e: 32-point wet contact relay output configuration with dual-line field power segmentation\u003c\/li\u003e\n\u003cli\u003eNo additional suffix variants or functional sub-matrix definitions are specified in the provided documentation\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModelBrand\u003c\/td\u003e\n\u003ctd\u003eYokogawa SARM55W\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\u003e2.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eW 482.6 mm x H 132.5 mm (3U)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperatingTemp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowerConsumption\u003c\/td\u003e\n\u003ctd\u003e24 VDC, max 0.65 A (internal circuit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Points\u003c\/td\u003e\n\u003ctd\u003e32-point relay output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load 250 VAC\u003c\/td\u003e\n\u003ctd\u003e0.6 A per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load 30 VDC\u003c\/td\u003e\n\u003ctd\u003e0.6 A per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Load 125 VDC\u003c\/td\u003e\n\u003ctd\u003e0.1 A per point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;= 10 MOhm (500 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWithstanding Voltage\u003c\/td\u003e\n\u003ctd\u003e2 kV field-to-case, 500 V power-to-case\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Device Supply\u003c\/td\u003e\n\u003ctd\u003eDual-line, per 16-point group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control Interface Electrical Architecture\u003c\/h3\u003e\n\u003cp\u003eYokogawa process I\/O architectures implement channel-level separation and controlled electrical isolation between field switching elements and system backplane logic. The SARM55W relay terminal board supports discrete output decoupling through mechanical contact isolation, ensuring separation between 24 VDC control power domains and external load circuits.\u003c\/p\u003e\n\u003cp\u003eIn DCS integration environments, channel-to-channel electrical independence is maintained through relay segmentation, minimizing cross-conduction paths under mixed AC\/DC switching conditions. The terminal architecture aligns with distributed I\/O designs where field wiring density is concentrated at rack-level termination points, reducing cabinet-level wiring dispersion and improving signal routing determinism in DO execution paths.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the SARM55W support mixed AC and DC load switching on adjacent channels?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Each relay channel is electrically isolated; however, load grouping must respect per-point current limits and field wiring separation standards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the board require external suppression for inductive loads?\u003c\/strong\u003e\u003cbr\u003eA: External flyback or surge suppression is required at the field device level for inductive loads to prevent contact wear and arcing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is hot-swap supported for the terminal board during operation?\u003c\/strong\u003e\u003cbr\u003eA: Hot-swap behavior depends on system configuration; field termination should be de-energized prior to board removal to avoid relay contact stress.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain separation between AC and DC wiring harnesses on field terminal blocks\u003c\/li\u003e\n\u003cli\u003eEnsure torque specification compliance for M4 terminal screws to avoid contact resistance drift\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for high-noise industrial environments and terminate shields at single-point ground only\u003c\/li\u003e\n\u003cli\u003eVerify insulation resistance before energizing field circuits (minimum 10 MOhm recommended threshold)\u003c\/li\u003e\n\u003cli\u003eDo not exceed per-point current limits to prevent relay contact degradation\u003c\/li\u003e\n\u003cli\u003eConfirm correct allocation of dual-line field power groups (16-point segmentation)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":44214292742232,"sku":"SARM55W","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0670\/2039\/0488\/files\/SARM55W-2.jpg?v=1781061132","url":"https:\/\/www.industriaxplc.com\/products\/relay-output-terminal-board-yokogawa-sarm55w","provider":"IndustriaX Limited","version":"1.0","type":"link"}