{"product_id":"yokogawa-sarm15a-relay-board","title":"Yokogawa SARM15A Relay Board","description":"\u003cp\u003eConfigured for multi-channel discrete status monitoring in Yokogawa industrial control and safety platforms, the \u003cstrong\u003eYokogawa SARM15A\u003c\/strong\u003e (\u003cstrong\u003eSARM15A\u003c\/strong\u003e Relay Board) provides direct physical\/electrical execution. The solid-state sub-assembly conditions and filters binary dry-contact parameters directly at the hardware tier to update centralized register states over the system I\/O backplane bus.\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\u003eSARM15A Relay Board\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\u003e2.2 kg (4.85 lbs) net component mass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e482.6 mm x 132.5 mm standard rack-mount footprint\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +70 deg C continuous plant limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Configuration\u003c\/td\u003e\n\u003ctd\u003eDry contact, mechanical relay contact sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e32 independent digital input paths\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC loop execution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput ON Resistance\u003c\/td\u003e\n\u003ctd\u003eLess than or equal to 150 Ohm loop threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput OFF Resistance\u003c\/td\u003e\n\u003ctd\u003eGreater than 150 Ohm loop threshold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Boundary\u003c\/td\u003e\n\u003ctd\u003eFull channel-to-channel and channel-to-system isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Conditioning\u003c\/td\u003e\n\u003ctd\u003eBuilt-in noise suppression and input filtering arrays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Interface\u003c\/td\u003e\n\u003ctd\u003eBuilt-in terminal matrix utilizing M4 screw configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatform Compatibility\u003c\/td\u003e\n\u003ctd\u003eYokogawa CENTUM series and ProSafe-RS I\/O frames\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture Support\u003c\/td\u003e\n\u003ctd\u003eSingle or dual-redundant deployment topologies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDigital I\/O Cards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; DCS Instrumentation Rails\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Channel Isolation and Noise Suppression Rails\u003c\/strong\u003e The internal circuit topology incorporates dedicated galvanic separation boundaries across all 32 individual input pathways. This electrical barrier shields the internal system logic from field-side voltage fluctuations, common-mode noise, and potential ground loop deltas, ensuring clean binary tracking without register corruption across the shared backplane bus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-20 mA HART Loop Protocol Coexistence and System Safety\u003c\/strong\u003e While engineered to process high-density discrete monitoring fields, the module operates inside cabinet enclosures alongside analog instrumentation running the 4-20 mA HART loop protocol. Built-in hardware input filtering and noise suppression elements isolate inductive contact bounce and electromagnetic interference, preventing localized electrical noise from distorting adjacent low-level analog measurement paths.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How do the exact input loop resistance thresholds govern status sensing reliability?\u003c\/p\u003e\n\u003cp\u003eA: The input monitoring circuit recognizes an active ON state when the field circuit resistance is 150 Ohm or less, confirming solid loop closure. It registers an inactive OFF state when the loop resistance exceeds 150 Ohm, preventing minor line leakage currents or contact contamination from causing false state transitions in the controller memory registers.\u003c\/p\u003e\n\u003cp\u003eQ: What mechanisms dictate the deployment of the board within redundant safety systems?\u003c\/p\u003e\n\u003cp\u003eA: The physical wiring interface allows parallel input signals from a single field contact array to route into dual-redundant Yokogawa I\/O modules simultaneously. This physical architecture ensures that if one upstream I\/O card channel encounters a components failure, the redundant tracking branch continues updating system registers without contact chatter or state tracking latency.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":47641267437758,"sku":"SARM15A","price":3000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-16_10-05-04_0f33f7df-4f7f-4240-9915-3a3b88be269c.png?v=1781577543","url":"https:\/\/www.autooiltech.com\/products\/yokogawa-sarm15a-relay-board","provider":"AutoOilTech Limited","version":"1.0","type":"link"}