{"product_id":"abb-bailey-infi-90-ntu-7c2-i-o-controller-termination-unit-1","title":"ABB Bailey Infi 90 NTU-7C2 I\/O Controller Termination Unit 1","description":"\u003cp\u003eThe \u003cstrong\u003eABB NTU-7C2\u003c\/strong\u003e, serves as the primary \u003cstrong\u003eNTU-7C2\u003c\/strong\u003e Termination Unit utilized to execute field signal routing and isolation across Bailey Infi 90 platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Variant Configuration\u003c\/h3\u003e\n\u003cp\u003eThe NTU-7C2 isolated interface module operates as a field termination chassis within the Bailey Infi 90 I\/O subsystem. The base designation NTU defines the termination unit architecture for field wiring interface, while the suffix -7C2 denotes the specific isolated channel layout supporting multi-channel 4-20 mA analog loops with bi-directional surge suppression.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003eNTU-7C2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eABB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.7 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e17.8 x 7.6 x 20.3 cm\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\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to +85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5-95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive pass-through\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e250 V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent per Terminal\u003c\/td\u003e\n\u003ctd\u003e8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWire Size\u003c\/td\u003e\n\u003ctd\u003e0.2 - 4 mm2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 3 mOhm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e1.5 kV AC terminal-to-earth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Protection\u003c\/td\u003e\n\u003ctd\u003e600 W bi-directional\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types\u003c\/td\u003e\n\u003ctd\u003eAnalog 4-20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFieldbus Integration and Channel Density\u003c\/h3\u003e\n\u003cp\u003eDesigned for optimal I\/O density scaling, the unit maintains signal integrity between field devices and host controllers across backplane bus communication velocity links. Integrated 600 W bi-directional surge suppression and 1.5 kV AC terminal-to-earth isolation safeguard upstream control electronics without introducing firmware flash compatibility delays or channel degradation.\u003c\/p\u003e\n\u003ch3\u003eDelivery Package Components\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x ABB NTU-7C2 I\/O Controller Termination Unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCabinet Mounting and Wiring Instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStrip conductor insulation to 7 mm before inserting into terminals to ensure full clamp engagement.\u003c\/li\u003e\n\u003cli\u003eTighten terminal screws to a torque spec of 0.5 to 0.6 Nm using an insulated torque screwdriver.\u003c\/li\u003e\n\u003cli\u003eSecure field wiring shields to the enclosure grounding bar, maintaining single-point earthing per loop.\u003c\/li\u003e\n\u003cli\u003eEnsure 50 mm clearance above and below the terminal block for adequate air convection cooling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat maximum wire gauge does the NTU-7C2 screw terminal accept?\u003c\/p\u003e\n\u003cp\u003eThe screw terminal block accommodates solid or stranded conductors ranging from 0.2 to 4 mm2.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat level of electrical isolation is provided by the termination unit?\u003c\/p\u003e\n\u003cp\u003eThe module provides 1.5 kV AC dielectric isolation measured between field terminals and earth ground.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the maximum continuous current capacity per terminal point?\u003c\/p\u003e\n\u003cp\u003eEach individual terminal is rated to handle a continuous current load up to 8 A.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does the integrated surge protection operate on 4-20 mA loops?\u003c\/p\u003e\n\u003cp\u003eThe unit utilizes 600 W bi-directional suppression elements to clamp transient voltage spikes on field lines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the contact resistance across the terminal connections?\u003c\/p\u003e\n\u003cp\u003eThe terminal contact assembly maintains an internal contact resistance of less than 3 mOhm.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the NTU-7C2 be operated in ambient temperatures below freezing?\u003c\/p\u003e\n\u003cp\u003eYes, the hardware is rated for continuous operation down to -20 deg C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the unit draw active power from the backplane power supply?\u003c\/p\u003e\n\u003cp\u003eNo, the unit functions as a passive interface termination assembly and draws no internal operating power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat insulation voltage rating applies to field signal wiring?\u003c\/p\u003e\n\u003cp\u003eThe terminal assembly features an operating voltage insulation rating of 250 V AC.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46021113020589,"sku":"NTU-7C2","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/abb-ntdi02-digital-i-o-termination-unit-lm22ifux045.jpg?v=1766984192","url":"https:\/\/www.maxwellplc.com\/ru\/products\/abb-bailey-infi-90-ntu-7c2-i-o-controller-termination-unit-1","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}