{"product_id":"yokogawa-st2-d-digital-input-output-module","title":"Yokogawa ST2*D Digital Input\/Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eYokogawa ST2*D\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eST2*D\u003c\/strong\u003e Digital Input\/Output Module, operates as a dedicated hardware component for discrete signal processing and relay logic control within Yokogawa CENTUM-XL, u-XL, and DCS platforms. Serving as part of the JUXTA R Series, the module supports up to 16 relay input\/output cards totaling 32 channels, accepting 24 VDC input signals and delivering 0-24 VDC at 1 A outputs while communicating across PROFIBUS-DP, DeviceNet, and Modbus networks.\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\u003e0.5 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\u003eSystem Backplane Powered\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input\/Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Capacity\u003c\/td\u003e\n\u003ctd\u003e32 channels (supports up to 16 relay I\/O cards)\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\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e0-24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Current\u003c\/td\u003e\n\u003ctd\u003e1 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocols\u003c\/td\u003e\n\u003ctd\u003ePROFIBUS-DP, DeviceNet, Modbus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eYokogawa CENTUM-XL, u-XL, DCS platforms\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; HART Loop Integration\u003c\/h3\u003e\n\u003cp\u003eThe Yokogawa ST2*D digital I\/O card architecture incorporates physical channel-to-channel isolation barriers to prevent field ground loops and electrical noise from interfering with central DCS processing units. Built-in signal routing protocols support multi-point discrete switching while maintaining physical separation from adjacent 4-20 mA HART loop protocol lines, FOUNDATION Fieldbus, and Profibus PA connectivity networks. Onboard thermal stability design ensures accurate state evaluation during cold junction compensation (CJC) reference cycles on neighboring analog channels.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the total channel density supported by the ST2D digital I\/O module?\u003c\/p\u003e\n\u003cp\u003eA: The ST2D supports up to 16 relay input\/output cards, providing a total density of 32 discrete channels.\u003c\/p\u003e\n\u003cp\u003eQ: Which communication protocols are natively supported by the ST2*D hardware?\u003c\/p\u003e\n\u003cp\u003eA: The module directly interfaces with industrial networks using PROFIBUS-DP, DeviceNet, and Modbus protocols.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation\u003c\/strong\u003e: De-energize cabinet power feeds and isolate external 24 VDC field voltage loops before mounting or servicing the ST2*D card.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Mounting\u003c\/strong\u003e: Seat the ST2*D card into the designated slot of the JUXTA R Series rack cage, pushing until side locking latches snap firmly into place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Wiring\u003c\/strong\u003e: Connect input and output conductors according to channel assignments, ensuring external relay loads do not exceed the 1 A maximum output current specification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShielding and Grounding\u003c\/strong\u003e: Route field digital communication cables away from high-voltage AC power lines. Bond all cable shields directly to the main system earth ground bar.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":52682093756696,"sku":"ST2*D","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/screenshot_2026-09-15_09-41-43_Cocoai_8a28f1f9-256e-4596-8e5a-2bd3d748f7b0.jpg?v=1789438022","url":"https:\/\/www.innoplcsync.com\/products\/yokogawa-st2-d-digital-input-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}