{"product_id":"digital-i-o-assemblies-yokogawa-akb331-m020-sdv144","title":"Digital I\/O Assemblies | Yokogawa AKB331-M020\/SDV144","description":"\u003ch2\u003eYokogawa AKB331-M020\/SDV144 Digital Input Assembly\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eYokogawa AKB331-M020\/SDV144\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eAKB331\/SDV144\u003c\/strong\u003e Digital I\/O Assembly, operates as a dedicated hardware component for 24 VDC logic signal interconnect and digital input processing within Yokogawa CENTUM CS3000 and ProSafe-RS platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOption Code \/ Suffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eStructural Specification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eFunctional Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAKB331\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBase Model Code\u003c\/td\u003e\n\u003ctd\u003eDirect Signal Cable Interface Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e-M020\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCable Length Option\u003c\/td\u003e\n\u003ctd\u003e20 Meter Length Specification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e** \/SDV144**\u003c\/td\u003e\n\u003ctd\u003eModule Integration\u003c\/td\u003e\n\u003ctd\u003e16-Channel 24 VDC Digital Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003eAKB331-M020\/SDV144\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\u003e1.5 kg (Cable) \/ 0.4 kg (Module assembly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCable outer diameter 6.8 mm \/ Module 130 mm x 100 mm x 30 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to +55 deg C (Assembly) \/ -20 to +80 deg C (Cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5 VDC via backplane bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Level\u003c\/td\u003e\n\u003ctd\u003e24 VDC logic signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInsulation Resistance\u003c\/td\u003e\n\u003ctd\u003e100 M ohm minimum at 500 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Rating\u003c\/td\u003e\n\u003ctd\u003e250 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003e50-pin to 50-pin interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Isolation\u003c\/td\u003e\n\u003ctd\u003eCollective optical isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eVnet\/IP via FCS backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol and Channel-to-Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe assembly functions within high-density control cabinets alongside analog instrumentation, maintaining collective isolation to prevent ground potential differences from affecting internal logic. The 50-pin shielded cabling architecture provides high noise immunity for digital input signals operating parallel to 4-20 mA HART loop protocol wiring runs, preventing electromagnetic induction from causing signal chatter or false trips on the Vnet\/IP backplane.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the 50-pin connector layout maintain grounding across the 20-meter cable span?\u003c\/p\u003e\n\u003cp\u003eA: The AKB331 cable integrates dedicated grounding pin assignments within the 50-pin configuration, connecting the outer braided shield directly to the cabinet protective earth (PE) terminal to maintain continuous shielding across the entire 20-meter run.\u003c\/p\u003e\n\u003cp\u003eQ: What precautions prevent signal degradation over the 20-meter AKB331-M020 distance?\u003c\/p\u003e\n\u003cp\u003eA: Insulation resistance of 100 M ohm minimum at 500 VDC ensures high signal fidelity. Installers must avoid exceeding the minimum bend radius and maintain segregation from high-voltage AC cables to prevent inductive noise coupling.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the SDV144 card directly into the Field Control Station (FCS) card cage until the backplane connector locks securely into place. Align the 50-pin connector of the AKB331-M020 cable with the module header, tightening the side locking screws to secure the physical connection. Route the 20-meter cable through dedicated low-voltage cable trays, ensuring the 6.8 mm diameter cable avoids sharp metallic edges. Secure the shield wire terminal directly to the cabinet grounding bar prior to applying 24 VDC loop power.\u003c\/p\u003e","brand":"Yokogawa","offers":[{"title":"Default Title","offer_id":43791676604506,"sku":"AKB331-M020\/SDV144","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/614.1_16fed004-8855-482b-94c2-ddb9a3c426da.jpg?v=1785984627","url":"https:\/\/www.spareoil.com\/ar\/products\/digital-i-o-assemblies-yokogawa-akb331-m020-sdv144","provider":"SpareOil Automation","version":"1.0","type":"link"}