{"product_id":"ntu-7uo-14-abb-isolated-analog-termination-unit","title":"NTU-7UO 14 ABB Isolated Analog Termination Unit","description":"\u003cp\u003eConfigured for analog signal isolation and field wiring termination in ABB Infi-90 DCS networks, the \u003cstrong\u003eABB NTU-7UO\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eNTU7UO\u003c\/strong\u003e (and equivalent variant \u003cstrong\u003eNTU-7U0\u003c\/strong\u003e) Isolated Analog Termination Unit, provides direct physical\/electrical execution. The module conditions 4-20 mA current loops and voltage signals between field instrumentation and system controllers, suppressing ground loop currents and field noise across measurement channels.\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\u003eNTU-7UO (NTU7UO \/ NTU-7U0)\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\u003eUSA \/ Sweden\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.88 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e38 mm (W) x 255 mm (H) x 120 mm (D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive field terminal interface draw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Compatibility\u003c\/td\u003e\n\u003ctd\u003e4-20 mA current loops, DC voltage inputs\/outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Capacity\u003c\/td\u003e\n\u003ctd\u003e14 isolated channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eInfi-90 DCS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDeterministic Network Backplane and System Signal Integrity\u003c\/h3\u003e\n\u003cp\u003eThe NTU-7UO termination unit preserves backplane bus communication velocity and signal fidelity by providing point-to-point galvanic channel isolation across field wiring runs. Signal conditioning circuits prevent differential voltage spikes and common-mode noise from propagating into internal I\/O rack buses, maintaining I\/O density scaling and channel resolution.\u003c\/p\u003e\n\u003cp\u003eConstructed for full firmware flash compatibility with upstream Infi-90 analog processing modules, the passive termination assembly maintains continuous loop impedance. Ground shielding traces integrated into the printed circuit board route high-frequency field interference directly to system earth ground.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How does the NTU-7UO prevent field-generated interference from affecting control system racks?\u003c\/p\u003e\n\u003cp\u003eA: The unit incorporates internal isolation circuitry on every channel to decouple field loop circuits electrically from system-side logic ground, eliminating ground loops and suppressing high-voltage common-mode transients.\u003c\/p\u003e\n\u003cp\u003eQ: What physical signal types can be connected to the terminal blocks of the NTU-7UO module?\u003c\/p\u003e\n\u003cp\u003eA: The termination unit accepts standard 4-20 mA DC current signals as well as low-voltage DC analog inputs\/outputs utilized for process parameter measurement.\u003c\/p\u003e\n\u003cp\u003eQ: Is field power distributed through the termination board to field transmitters?\u003c\/p\u003e\n\u003cp\u003eA: The board terminates and isolates loop wiring; loop power routing depends on the specific jumper settings and field cable wiring scheme connected to the terminal strip.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect all active 4-20 mA current loop sources and field power feeds prior to wiring or servicing the termination unit.\u003c\/li\u003e\n\u003cli\u003eWear an anti-static wrist strap during installation to protect sensitive onboard isolation components from electrostatic discharge.\u003c\/li\u003e\n\u003cli\u003eMount the unit securely onto the designated enclosure rack frame and tighten all mounting hardware to ensure low-resistance earth ground continuity.\u003c\/li\u003e\n\u003cli\u003eRoute analog field signal cables through dedicated wire raceways physically separated from high-voltage AC lines and motor drives.\u003c\/li\u003e\n\u003cli\u003eStrip field wire leads to specified length, insert into terminal blocks, and torque screw clamps to standard technical limits to prevent loose connections.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":53265429004597,"sku":"NTU-7UO","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/NTU-7UO.png?v=1786353353","url":"https:\/\/www.5gplc.com\/products\/ntu-7uo-14-abb-isolated-analog-termination-unit","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}