{"product_id":"1746-nr4-allen-bradley-resistance-temperature-detector-module","title":"1746-NR4 Allen-Bradley Resistance Temperature Detector Module","description":"\u003ch2 id=\"product-overview\"\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong style=\"color: #2e86c1; font-size: 1.1em;\"\u003eAllen-Bradley 1746-NR4\u003c\/strong\u003e is a high-precision RTD (Resistance Temperature Detector) input module designed for the SLC 500™ controller platform. This module provides four backplane-isolated channels capable of interfacing with a variety of RTD sensors to provide accurate temperature data for industrial processes. With built-in linearization and self-calibration features, the 1746-NR4 ensures high-fidelity signal conversion and long-term stability in demanding thermal monitoring applications.\u003c\/p\u003e\n\u003ch2 id=\"technical-configuration\"\u003eTechnical Configuration\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Allen-Bradley \/ Rockwell Automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Line:\u003c\/strong\u003e SLC 500 I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number:\u003c\/strong\u003e \u003cspan style=\"color: #2e86c1;\"\u003e\u003cstrong\u003e1746-NR4\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Channels:\u003c\/strong\u003e 4 (Backplane Isolated)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Current Draw:\u003c\/strong\u003e 50 mA at 5V DC; 50 mA at 24V DC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Voltage:\u003c\/strong\u003e 500 Volts for 1 minute\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Wire Size:\u003c\/strong\u003e Up to two 2.5 mm² (14 AWG) per terminal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 id=\"technical-specifications\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #cccccc; margin-bottom: 20px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc;\"\u003e\u003cstrong\u003e0.54 kg (1.19 lbs)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc;\"\u003e0 to 60 °C (32 to 140 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc; background-color: #f9f9f9;\"\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc;\"\u003e1.5 W Max\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eHumidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc;\"\u003e5% to 95% (Non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px; border: 1px solid #cccccc; background-color: #f9f9f9;\"\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd colspan=\"3\" style=\"padding: 10px; border: 1px solid #cccccc;\"\u003eCE, UL Listed, C-Tick Certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2 id=\"installation-guide\"\u003eInstallation \u0026amp; Wiring Features\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e1. Signal Isolation:\u003c\/strong\u003e The 1746-NR4 features 500V operating isolation between the RTD inputs and the backplane. This protects the SLC 500 CPU from electrical noise and potential transients originating from field sensors, ensuring system-wide reliability in electrically noisy environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Wiring Capacity:\u003c\/strong\u003e The module supports a maximum termination wire size of two 2.5 mm² (14 AWG) wires per terminal. This allows for robust physical connections and facilitates \"daisy-chaining\" of common leads where required by specific RTD configurations (2-wire, 3-wire, or 4-wire).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Thermal Management:\u003c\/strong\u003e Designed to operate efficiently within a range of 0 to 60 °C, the module consumes a maximum of 1.5W of power. Its low heat dissipation footprint allows it to be installed in high-density SLC 500 racks without requiring specialized cooling, provided standard enclosure ventilation is maintained.\u003c\/p\u003e\n\u003ch2 id=\"engineering-advantages\"\u003eEngineering Advantages\u003c\/h2\u003e\n\u003cp\u003eThe Allen-Bradley 1746-NR4 is engineered for precision. By converting analog resistance signals directly into digital values for the SLC 500 backplane, it eliminates the need for external signal conditioners. The module's compatibility with standard certifications (CE, UL, C-Tick) ensures it meets global safety and electromagnetic compatibility standards, making it a dependable choice for international machinery manufacturers and process plants.\u003c\/p\u003e\n\u003ch2 id=\"technical-faqs\"\u003eTechnical FAQs\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What types of RTDs does the 1746-NR4 support?\u003c\/strong\u003e\u003cbr\u003eA1: The module is designed to work with standard Platinum, Nickel, and Copper RTDs. Please refer to the user manual for specific resistance curves and configuration settings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Is an external power supply required?\u003c\/strong\u003e\u003cbr\u003eA2: No, the 1746-NR4 draws its required operating power (50 mA at 5V and 24V DC) directly from the SLC 500 chassis backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Can channels be configured independently?\u003c\/strong\u003e\u003cbr\u003eA3: Yes, each of the four channels is isolated and can be configured through the controller software to match the specific RTD type connected to that port.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51050730422404,"sku":"1746-NR4","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1746-NR4.jpg?v=1776265869","url":"https:\/\/www.etowonauto.com\/products\/1746-nr4-allen-bradley-resistance-temperature-detector-module","provider":"Etowon Auto","version":"1.0","type":"link"}