{"product_id":"allen-bradley-1746-no4i-current-output-module","title":"Allen-Bradley 1746-NO4I SLC 500 Analog Current Output Module","description":"\u003cp\u003eThe Allen-Bradley 1746-NO4I is a high-resolution, 4-channel analog output module engineered for the SLC 500 programmable logic controller system. This module provides four independent current output channels, specifically designed for industrial control applications requiring precise current signals between 0 and 20 mA.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour dedicated analog current output channels.\u003c\/li\u003e\n\u003cli\u003e14-bit digital-to-analog resolution for high-precision control.\u003c\/li\u003e\n\u003cli\u003eSupports 0 to 20 mA or 4 to 20 mA output ranges.\u003c\/li\u003e\n\u003cli\u003eGalvanic backplane isolation ensures signal integrity and system protection.\u003c\/li\u003e\n\u003cli\u003eFast dynamic response times suitable for demanding process loops.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 1746 chassis architectures.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1746-NO4I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e4 Current Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Range\u003c\/td\u003e\n\u003ctd\u003e0 to 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V DC)\u003c\/td\u003e\n\u003ctd\u003e55 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V DC)\u003c\/td\u003e\n\u003ctd\u003e195 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Rating\u003c\/td\u003e\n\u003ctd\u003e500V DC (Field to Backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the SLC 500 chassis power is disconnected before inserting or removing the module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eUse shielded Belden #8761 cable or equivalent to maintain signal integrity and reduce EMI\/RFI interference.\u003c\/li\u003e\n\u003cli\u003eMaximum wire size for terminal connections is #14 AWG.\u003c\/li\u003e\n\u003cli\u003eEnsure proper grounding of the cable shield at the signal source or destination, per standard industrial practices.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate ventilation within the enclosure to keep ambient temperatures within the 0 to 60 degC operating range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThe 1746-NO4I is widely utilized in process automation environments, including water treatment facilities for valve and pump control, chemical processing for PID-based pressure and temperature regulation, and HVAC systems for damper positioning. Its high-resolution output makes it suitable for driving VFDs and other current-controlled field devices.\u003c\/p\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1746-NO4I?\u003c\/h3\u003e\u003cp\u003eThis module serves as an analog output interface for the SLC 500 series, converting digital data from the processor into four independent 0-20 mA current signals for field instrumentation.\u003c\/p\u003e\u003ch3\u003eIs this module isolated?\u003c\/h3\u003e\u003cp\u003eThe 1746-NO4I provides galvanic isolation between the field wiring and the backplane, rated up to 500V DC.\u003c\/p\u003e\u003ch3\u003eWhat is the maximum load resistance for the output channels?\u003c\/h3\u003e\u003cp\u003eThe output circuits are designed to support a load resistance range of 0 to 500 ohms.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43988922892378,"sku":"1746-NO4I","price":97.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_eaa6afba-e43f-4810-8b2a-7889c21a4079.jpg?v=1788283719","url":"https:\/\/www.spareoil.com\/products\/allen-bradley-1746-no4i-current-output-module","provider":"SpareOil Automation","version":"1.0","type":"link"}