{"product_id":"1771-nr-allen-bradley-plc-5-rtd-analog-input-module","title":"1771-NR | Allen Bradley | PLC 5 RTD Analog Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Allen Bradley 1771-NR functions as a high-precision RTD (Resistance Temperature Detector) analog input module designed for the legacy PLC 5 architecture. It provides eight independent channels to interface directly with various industrial temperature sensors without requiring external signal transmitters. By converting low-level resistance signals into BCD or Natural Binary data, the 1771-NR enables the PLC 5 processor to monitor critical thermal variables in real-time. This module serves as a vital component for high-accuracy temperature sensing in chemical processing, power generation, and food manufacturing sectors.\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\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetailed Specification\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\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley \/ Rockwell Automation\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-NR\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eN-Series Analog I\/O\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eNumber of Inputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e8 RTD Inputs\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupported RTD Types\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100Ω Platinum (385\/3916), 120Ω Nickel, 10Ω Copper\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Resolution\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.03° Celsius\/bit; 0.06° Fahrenheit\/bit\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eResistance Range\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 to 650 Ohms\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eData Format\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBCD (Binary Coded Decimal) or Natural Binary\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eBackplane Current\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1.5 Amperes\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eRemote Terminal Panel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-RTP4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWiring Arm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1771-WH\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100% Brand New Original\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\u003eDirect Sensor Interfacing:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1771-NR eliminates the need for expensive and bulky temperature transmitters. It accepts raw resistance signals from Platinum, Nickel, and Copper RTDs directly, reducing the total bill of materials (BOM) and simplifying the electrical loop architecture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Thermal Resolution:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis module delivers a resolution of 0.03°C per bit. This level of sensitivity allows the PLC 5 system to detect minute temperature fluctuations, ensuring tighter process control and preventing thermal runaway in sensitive chemical reactions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Data Formatting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe hardware supports both BCD and Natural Binary data formats. Engineers can select the format that matches their existing PLC 5 logic structure, which streamlines software integration and avoids complex data conversion routines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRobust Signal Integrity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt-in signal delays (45-50 ms) filter out high-frequency industrial noise. This feature ensures that the processor receives stable and repeatable temperature data even when the module resides in cabinets near large motor drives or high-voltage switchgear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStandardized Rack Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 1771-NR slots into any standard 1771 I\/O chassis. It utilizes the 1771-WH wiring arm, which allows maintenance personnel to replace modules without disconnecting field wires, significantly reducing Mean Time to Repair (MTTR).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this 1771-NR unit 100% Brand New?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. We supply this 1771-NR module in 100% Brand New, original factory condition. Despite the legacy status of the PLC 5 line, we provide original, unused hardware to ensure the highest reliability for your critical infrastructure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhich Platinum RTD standards does this module support?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1771-NR supports both the European standard (coefficient 0.00385) and the U.S. standard (coefficient 0.003916). You must configure the module via the PLC software to match the specific sensor type installed in the field.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a specific terminal panel for high-density wiring?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. For optimal cable management and signal shielding, we recommend using the 1771-RTP4 Remote Terminal Panel. This simplifies the connection of the eight RTD sensors to the 1771-NR module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan the 1771-NR monitor resistance values other than temperature?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module can operate in an Ohms-only mode with a range of 1 to 650 Ohms. This allows it to monitor potentiometers or other resistance-based feedback devices alongside standard RTD sensors.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52870105366837,"sku":"1771-NR","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/1771-NR.png?v=1778651759","url":"https:\/\/www.5gplc.com\/products\/1771-nr-allen-bradley-plc-5-rtd-analog-input-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}