{"product_id":"1746-nr4-rockwell-automation-resistance-module-new-original","title":"1746-NR4 Rockwell Automation Resistance Module New Original","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-NR4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides high-precision temperature and resistance monitoring for the SLC 500 PLC platform. This 4-channel module interfaces directly with various Resistance Temperature Detectors (RTDs) and direct resistive sources, converting these physical signals into digital data for the processor. It eliminates the need for external signal transmitters, reducing both hardware costs and potential points of failure. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ein factory packing, ensuring the highest accuracy for your critical process thermal loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 (Backplane isolated)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCompatible RTD Types\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003ePlatinum (385\/3916), Copper (426), Nickel (618\/672), Nickel-Iron (518)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResistance Input Ranges\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0–150Ω, 0–500Ω, 0–1000Ω, 0–3000Ω\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eA\/D Conversion Method\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSigma-Delta Modulation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.01 °C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (5V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e50 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current (24V)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e50 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eUpdate Time\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e17 ms to 1.2 seconds (Programmable)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500V DC (between inputs and backplane\/chassis)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 60 °C (32 to 140 °F)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNet Product Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.26 kg (0.56 lbs)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eShipping Weight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3.00 kg (Securely packed for global transit)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Sensor Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1746-NR4 supports a massive library of RTD types, including Platinum (100, 200, 500, 1000 Ω), Nickel, and Copper. This versatility allows you to standardize on one module type across your entire facility, regardless of the varied sensor types installed on your machinery.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Noise Rejection:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUtilizing Sigma-Delta modulation and a programmable low-pass digital filter, the module effectively ignores electromagnetic interference (EMI) commonly found near large motor drives. The programmable notch frequencies allow you to filter out specific 50Hz or 60Hz line noise.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGranular Temperature Precision:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWith a resolution of 0.01 °C, this module handles demanding applications like chemical reaction monitoring or food processing where tight thermal tolerances are non-negotiable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Chassis Placement:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYou can install the 1746-NR4 in any available I\/O slot of an SLC 500 chassis except for Slot 0 (reserved for the CPU). This provides maximum freedom during system design or field retrofits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1746-NR4 require calibration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1746-NR4 performs self-calibration upon power-up and periodically during operation. This feature compensates for component aging and temperature drift, ensuring that your measurements remain accurate without manual intervention or specialized field calibration equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix different types of RTDs on the same module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You can configure each of the four channels independently through your software (RSLogix 500). For example, Channel 0 can monitor a 100-ohm Platinum RTD while Channel 1 measures a 1000-ohm Nickel-Iron sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat wiring configuration does the module support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module supports 2-wire, 3-wire, and 4-wire RTD configurations. For the highest accuracy and to compensate for lead-wire resistance, we strongly recommend using a 3-wire or 4-wire setup, especially if the sensors are located far from the PLC cabinet.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do the LED indicators help with troubleshooting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module features five green status indicators. One LED monitors the overall module health, while the remaining four correspond to individual channels. If a channel LED turns off or flashes, it typically indicates an open circuit, short circuit, or out-of-range sensor condition, allowing for rapid field diagnostics.\u003c\/p\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":43359212372058,"sku":"1746-NR4","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/8._15d043d7-c7de-4475-aa7b-1d36f32543cb.jpg?v=1778637285","url":"https:\/\/www.spareoil.com\/products\/1746-nr4-rockwell-automation-resistance-module-new-original","provider":"SpareOil Automation","version":"1.0","type":"link"}