{"product_id":"allen-bradley-1746-nr8-rtd-resistance-analog-input-module","title":"Allen-Bradley 1746-NR8 RTD\/Resistance Analog Input Module","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-NR8 is an RTD\/Resistance Analog Input Module designed for the SLC 500 system. This module features eight channels compatible with RTD sensors such as Platinum (385), Platinum (3916), Copper (426), Nickel (618), Nickel (672), and Nickel Iron (518). It also accepts direct resistance inputs across ranges including 0-150 ohms, 0-500 ohms, 0-1000 ohms, and 0-300 ohms. The Allen-Bradley 1746-NR8 supports both fixed and modular SLC 500 chassis configurations, making it a versatile choice for temperature and resistance measurement applications.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd\u003e100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24V)\u003c\/td\u003e\n\u003ctd\u003e55 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Time\u003c\/td\u003e\n\u003ctd\u003e6 ms to 2 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e0.01 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.82 W max (0.5 W @ 5 Vdc, 1.32 W @ 24 Vdc)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response\u003c\/td\u003e\n\u003ctd\u003e60 ms in, 2.5 ms out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Conversion\u003c\/td\u003e\n\u003ctd\u003eSigma-delta modulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThese specifications are sourced directly from the product data. The Allen-Bradley 1746-NR8 delivers reliable performance in demanding industrial environments.\u003c\/p\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-NR8 module is ideal for temperature monitoring in manufacturing processes, such as plastic extrusion or chemical reactors. Its resistance measurement capability allows for precise tracking of mechanical displacement, making it useful for position feedback in linear actuators. In process control, the 1746-NR8 ensures accurate data acquisition, reducing downtime and improving product quality.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup\u003c\/h2\u003e\u003cp\u003eInstall the Allen-Bradley 1746-NR8 in any I\/O chassis slot except slot 0. The module is powered via the backplane; no external supply is needed. For 2-wire RTD sensors, use Belden 9501 shielded cable or equivalent, and minimize cable length to maintain accuracy. For 3-wire or 4-wire RTDs, Belden 9533 or Belden 83503 cable is recommended. Use the compatible 1746-RT-35 terminal block for wiring. The module supports auto-calibration at power-up or every 5 minutes as programmed.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-NR8 is fully compatible with Allen-Bradley SLC 500 fixed and modular controllers. It occupies one slot and integrates seamlessly into existing control systems. The module works with 2-wire, 3-wire, and 4-wire RTD sensors, providing flexibility for various installation scenarios.\u003c\/p\u003e\u003ch2\u003eSelection Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing the Allen-Bradley 1746-NR8, verify your system's backplane power capacity and available slot. Confirm the RTD types required for your application. For a reliable supply, consider ordering from UBEST Automation. This module is a cost-effective choice for upgrading older RTD input solutions, offering improved accuracy and lower maintenance.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44403730022499,"sku":"1746-NR8","price":266.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1746-NR8_1__2.jpg?v=1785006242","url":"https:\/\/www.plcsourcepro.com\/products\/allen-bradley-1746-nr8-rtd-resistance-analog-input-module","provider":"PLC Source PRO","version":"1.0","type":"link"}