{"product_id":"st2-d-yokogawa-digital-input-output-module-new-original-stock","title":"ST2*D Yokogawa Digital Input\/Output Module |New \u0026 Original Stock","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa ST2#D\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eST2\u003c\/strong\u003e Digital Input\/Output Module, operates as a dedicated hardware component for discrete signal conditioning and logic state monitoring within Yokogawa DCS 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\u003eST2#D\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\u003e0.65 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e110 mm x 482.6 mm x 120.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 50 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e10 W (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Density\u003c\/td\u003e\n\u003ctd\u003e32 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control and Signal Connectivity\u003c\/h3\u003e\n\u003cp\u003eThe module utilizes 4-20 mA HART loop protocol standards for compatible analog segments, while facilitating robust channel-to-channel isolation for all discrete inputs. Integrated circuitry provides cold junction compensation (CJC) for associated thermocouple loops, ensuring that on-off contact signals from limit switches and push buttons remain decoupled from system noise. This electrical isolation prevents potential ground loops across the DCS backplane.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the ST2#D support hot-swapping while the DCS backplane is powered?\u003c\/p\u003e\n\u003cp\u003eA: No. Power must be removed from the specific rack segment before extraction or installation to avoid potential electrical faults on the communication bus.\u003c\/p\u003e\n\u003cp\u003eQ: Are the LED indicators configurable for different logic states?\u003c\/p\u003e\n\u003cp\u003eA: No. The LEDs are hardwired to reflect the physical state of the internal relay coils; they indicate active relay operation status only and cannot be reprogrammed.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Mounting\u003c\/strong\u003e: The unit is designed for standard rack-mount installation. Ensure the chassis is securely fastened to the rack rails to mitigate mechanical vibration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Protocols\u003c\/strong\u003e: Connect the module chassis to the system common ground rail using a low-impedance copper conductor to prevent floating potentials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Separation\u003c\/strong\u003e: Maintain a minimum separation of 10 cm between high-voltage AC power wiring and low-voltage signal cabling to reduce electromagnetic interference on the discrete inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Termination\u003c\/strong\u003e: Ensure all field wiring is properly labeled. When connecting limit switch contacts, verify the loop continuity before powering the module to prevent improper state detection.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":49165117882620,"sku":"ST2*D","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/ST2D.jpg?v=1780624894","url":"https:\/\/www.electronicplc.com\/ar\/products\/st2-d-yokogawa-digital-input-output-module-new-original-stock","provider":"Electronic PLC","version":"1.0","type":"link"}