{"product_id":"abb-ntdi21-b-digital-i-o-termination-module-bailey-series","title":"ABB NTDI21-B | Digital I\/O Termination Module | Bailey Series","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNTDI21-B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efrom ABB’s Bailey series is a high-performance digital I\/O termination module engineered for reliable interfacing of field devices with distributed control systems. It ensures stable signal connection, channel isolation, and robust surge protection, making it suitable for demanding industrial environments.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e\u003cstrong\u003eNTDI21-B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Input\/Output Termination Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Inputs\u003c\/td\u003e\n\u003ctd\u003e16 channels, standard ON\/OFF signals (24 VDC typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDigital Outputs\u003c\/td\u003e\n\u003ctd\u003e16 channels, standard ON\/OFF signals (24 VDC typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eElectrical isolation between I\/O channels and system bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Protection\u003c\/td\u003e\n\u003ctd\u003eIntegrated suppression circuits for industrial disturbances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC ±10%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eDIN rail or panel installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e120 × 100 × 50 mm\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\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e–25 °C to +60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (cabinet installation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReliable Signal Termination:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSecure and organized connection point for digital I\/O wiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChannel Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePrevents electrical interference between field devices and the controller.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSurge Resistance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProtects the system from transient voltages and spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOptimized for space-saving in control panels.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDesigned specifically for ABB Bailey DCS platforms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePower Generation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInterfaces turbine controls, switchgear, and actuator circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChemical \u0026amp; Process Industries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eConnects pumps, motor drives, and safety interlocks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMarine Automation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eReliable I\/O for shipboard monitoring and control systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Automation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eGeneral-purpose digital interface for sensors and actuators.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the NTDI21-B be used with non-ABB DCS systems?\u003c\/strong\u003e\u003cbr\u003eA: It is optimized for ABB Bailey systems; compatibility with other DCS may require verification.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it support high-current digital outputs?\u003c\/strong\u003e\u003cbr\u003eA: Outputs are standard 24 VDC ON\/OFF signals; external relays are recommended for high-current loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required?\u003c\/strong\u003e\u003cbr\u003eA: Inspect wiring connections and surge protection periodically; module itself is maintenance-free under normal conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are similar ABB modules available?\u003c\/strong\u003e\u003cbr\u003eA: The NTDI21-A and NTDI22-B provide comparable digital I\/O interfaces with variations in channel count and output configuration.\u003c\/p\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":43057431740506,"sku":"NTDI21-B","price":258.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/NTDI21-B2.jpg?v=1773628867","url":"https:\/\/www.plcmasters.com\/ru\/products\/abb-ntdi21-b-digital-i-o-termination-module-bailey-series","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}