{"product_id":"allen-bradley-1746-nr8-slc-500-rtd-input-module","title":"Allen-Bradley 1746-NR8 SLC 500 RTD Input Module","description":"\u003ch3\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis an eight-channel RTD and resistance analog input module developed for the SLC 500 programmable controller platform. This module is designed for high-accuracy temperature monitoring and resistance measurement applications in industrial automation systems.\u003c\/p\u003e\n\u003cp\u003eThe module accepts multiple RTD sensor types including platinum, copper, nickel, and nickel-iron elements, while also supporting direct resistance input devices. Its flexible input configuration allows integration into process temperature control, thermal monitoring, and machine protection systems.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003euses sigma-delta conversion technology to deliver stable analog signal processing with fine temperature resolution and reliable noise rejection. It is compatible with both fixed and modular SLC 500 hardware architectures.\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 class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRTD \/ Resistance Analog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Input Channels\u003c\/td\u003e\n\u003ctd\u003e8 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eRTD and Resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible PLC Platform\u003c\/td\u003e\n\u003ctd\u003eSLC 500 Fixed and Modular Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 5V DC\u003c\/td\u003e\n\u003ctd\u003e100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current @ 24V DC\u003c\/td\u003e\n\u003ctd\u003e55 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Consumption\u003c\/td\u003e\n\u003ctd\u003e1.82 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e0.5 W at 5V DC, 1.32 W at 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Conversion Method\u003c\/td\u003e\n\u003ctd\u003eSigma-Delta Modulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Resolution\u003c\/td\u003e\n\u003ctd\u003e0.01°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Time\u003c\/td\u003e\n\u003ctd\u003e6 ms to 2 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response\u003c\/td\u003e\n\u003ctd\u003e60 ms Input, 2.5 ms Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to 85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChassis Compatibility\u003c\/td\u003e\n\u003ctd\u003eAny Slot Except Slot 0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.75 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003eSupported RTD Sensor Types\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports the following RTD sensor standards:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003ePlatinum 100 \/ 200 \/ 500 \/ 1000 Ohm (Alpha 0.00385)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlatinum 100 \/ 200 \/ 500 \/ 1000 Ohm (Alpha 0.003916)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCopper 10 Ohm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNickel 120 Ohm (Alpha 0.00618)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNickel 120 Ohm (Alpha 0.00672)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNickel-Iron 604 Ohm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSupported Resistance Input Ranges\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e0 to 150 Ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0 to 300 Ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0 to 500 Ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e0 to 1000 Ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Areas\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emodule is commonly installed in:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eIndustrial temperature monitoring systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFurnace and oven controls\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHVAC automation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProcess manufacturing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThermal process regulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater treatment facilities\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMachine condition monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eHow many RTD channels are available on the 1746-NR8?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe module provides eight independently configurable analog input channels.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCan the module accept direct resistance measurements?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. In addition to RTD sensors, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esupports direct resistance input devices across multiple resistance ranges.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhich SLC 500 systems support this module?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe module is compatible with both fixed and modular SLC 500 platforms.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eCan the module be installed in Slot 0?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eNo. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1746-NR8\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003emust be installed in any available chassis slot except Slot 0.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43378291572826,"sku":"1746-NR8","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1746-NR82.jpg?v=1778817582","url":"https:\/\/www.plcmasters.com\/id\/products\/allen-bradley-1746-nr8-slc-500-rtd-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}