{"product_id":"st3-a-yokogawa-multi-status-input-card","title":"ST3*A Yokogawa Multi-Status Input Card","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa ST3*A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eST3*A\u003c\/strong\u003e Multi-Status Input Card, operates as a dedicated hardware component for digital discrete signal conversion and channel isolation within Yokogawa process control platforms. It processes multi-channel On-Off status inputs from field sensors and switches, translating 24 VDC voltage states into digital controller data across dedicated system backplane buses.\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\u003eST3*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\u003e0.5 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e100 mm x 100 mm x 50 mm\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eStandard backplane system bus power supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eMulti-Status Input Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Configuration\u003c\/td\u003e\n\u003ctd\u003eMulti-channel discrete monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Isolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel electrical isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVisual Indicators\u003c\/td\u003e\n\u003ctd\u003eFront-panel LED status per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel Isolation and HART Loop Architecture\u003c\/h3\u003e\n\u003cp\u003eThe ST3*A module features dedicated channel-to-channel isolation circuits to prevent ground loop currents and protect internal system logic from field-side electrical transients. Integrated input filtering stages suppress electromagnetic interference generated by 24 VDC contact switching networks. Individual front-panel LEDs provide direct physical verification of active input logic states to simplify hardware-level fault diagnosis during execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the ST3*A handle electrical noise across adjacent field channels?\u003c\/p\u003e\n\u003cp\u003eA: Electrical isolation barriers between input channels prevent common-mode noise and ground potential differences from causing signal cross-talk or corrupting internal logic backplane communications.\u003c\/p\u003e\n\u003cp\u003eQ: What physical indications confirm live signal input states on the card?\u003c\/p\u003e\n\u003cp\u003eA: Each individual input channel includes a dedicated front-panel LED indicator that illuminates directly when a valid 24 VDC logic signal is present.\u003c\/p\u003e\n\u003cp\u003eQ: Is external power wiring required to drive the internal card electronics?\u003c\/p\u003e\n\u003cp\u003eA: The ST3*A draws operating power directly from the system backplane rack assembly, while accepting field discrete inputs within standard 24 VDC range limits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eESD Protection:\u003c\/strong\u003e Handle the module using a grounded wrist strap to prevent electrostatic discharge from damaging onboard semiconductor components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Control:\u003c\/strong\u003e Ensure cabinet ambient temperatures remain within the -20 to 70 deg C operating range with condensation-free atmospheric conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Practice:\u003c\/strong\u003e Separate low-voltage discrete input signal cabling from high-power AC lines within panel wireways to minimize cross-coupled inductive interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Connect system racks and cable shields directly to an isolated instrument earth ground bar to ensure continuous electrical shield integrity.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":53304742773045,"sku":"ST3*A","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/ST3A.png?v=1786936952","url":"https:\/\/www.5gplc.com\/products\/st3-a-yokogawa-multi-status-input-card","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}