{"product_id":"1734-ir2-point-i-o-rtd-module-allen-bradley-series","title":"1734-IR2 POINT I\/O RTD Module Allen-Bradley Series","description":"\u003cdiv\u003e\n  \u003ch3\u003eGlobal PLC Spare HUB Review\u003c\/h3\u003e\n  \u003cp\u003eThe Allen-Bradley \u003cspan style=\"color:#d9534f;\"\u003e\u003cstrong\u003e1734-IR2\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color:#2980b9;\"\u003e\u003cstrong\u003ePOINT I\/O\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color:#27ae60;\"\u003e\u003cstrong\u003eRTD \/ Resistance input module\u003c\/strong\u003e\u003c\/span\u003e provides precise temperature measurement for distributed architectures. Global PLC Spare HUB's Insight highlights this unit for its delta-sigma conversion accuracy and flexible sensor profiling. Engineers integrate it into compact control cabinets to monitor dual-channel thermal loops without signal degradation.\u003c\/p\u003e\n\n  \u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n  \u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBrand \/ Manufacturer\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eAllen-Bradley \/ Rockwell Automation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003ePart Number \/ Catalog No.\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\u003cspan style=\"color:#d9534f;\"\u003e\u003cstrong\u003e1734-IR2\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eProduct Series \u0026amp; Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e\n\u003cspan style=\"color:#2980b9;\"\u003e\u003cstrong\u003ePOINT I\/O\u003c\/strong\u003e\u003c\/span\u003e \/ \u003cspan style=\"color:#27ae60;\"\u003e\u003cstrong\u003eRTD \/ Resistance input module\u003c\/strong\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eKeyswitch Position\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e6\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003eTwo (2) Single-ended, non-isolated\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eCompatible RTD Sensors\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e100 Pt (α=0.00385, 0.003916), 200 Pt, 10 Cu, 100\/120 Ni\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eResistance Input Range\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e0 to 600 ohms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eResolution \u0026amp; Accuracy\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e16 bits (9.5 mΩ\/cnt, 0.03 °C\/cnt); 0.1% Full Scale at 25 °C\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eStep Response \u0026amp; Update Rate\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e8 ms to 60 ms step response; 4 ms to 40 ms module update rate\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eElectrical Ratings\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e220 mA at 5V DC current draw; 1.0W power dissipation\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eThermal Output \u0026amp; Isolation\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e3.3 BTU\/hour dissipation; 50V continuous isolation voltage\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eEnvironmental \u0026amp; Physical\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e-20 to 55 °C operating temperature; Open-style enclosure\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eDimensions \u0026amp; Weight\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e56 x 12 x 75.5 mm; 0.036 kilograms\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd\u003e\u003cstrong\u003eBase Assembly Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd\u003e1734-TB, 1734-TBS, 1734-TOP, 1734-TOPS\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003ch3\u003eDeployment Architecture \u0026amp; Field Setup\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eSnap the \u003cspan style=\"color:#d9534f;\"\u003e\u003cstrong\u003e1734-IR2\u003c\/strong\u003e\u003c\/span\u003e directly onto compatible terminal base assemblies like the 1734-TB or 1734-TBS.\u003c\/li\u003e\n    \u003cli\u003eVerify that mechanical keyswitch position 6 matches the module to prevent insertion errors.\u003c\/li\u003e\n    \u003cli\u003eTerminate 2-wire or 3-wire RTD leads directly into the terminal block maintaining proper shield grounding.\u003c\/li\u003e\n    \u003cli\u003eAllocate sufficient 5V DC backplane power from the adapter to handle the 220 mA current draw.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eSystem Diagnostics \u0026amp; Operational Health\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003eReal-time status LEDs indicate channel-level faults, open-circuit conditions, and network packet exchange.\u003c\/li\u003e\n    \u003cli\u003eDelta-sigma conversion filters out line noise frequencies ranging from 50 Hz to 480 Hz using configurable notch settings.\u003c\/li\u003e\n    \u003cli\u003eInternal diagnostic registers log out-of-range temperature inputs for immediate controller notification.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eTarget Applications \u0026amp; Compatible Equipment\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatible Equipment:\u003c\/strong\u003e CompactLogix controllers, POINT I\/O adapters (1734-AENT, 1734-APB), and 1734 terminal bases.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eProcess Skids:\u003c\/strong\u003e Monitoring fluid temperatures in compact chemical injection skids and heat exchangers.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMachine Builders:\u003c\/strong\u003e Tracking bearing and winding temperatures in high-speed rotating industrial machinery.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnvironmental Chambers:\u003c\/strong\u003e Managing precise thermal profiles in testing enclosures and HVAC distribution lines.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eFulfillment, Warranty \u0026amp; Logistics\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShipping Partners:\u003c\/strong\u003e Expedited worldwide delivery handled via FedEx, UPS, and DHL.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFulfillment Window:\u003c\/strong\u003e Orders dispatched swiftly within 24 to 48 hours from verification.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuality Assurance:\u003c\/strong\u003e Backed by a comprehensive 12-month replacement warranty covering hardware integrity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eEngineering Frequently Asked Questions\u003c\/h3\u003e\n  \u003cp\u003e\u003cstrong\u003eQ: How does changing the notch filter frequency affect channel update rates on the \u003cspan style=\"color:#d9534f;\"\u003e\u003cstrong\u003e1734-IR2\u003c\/strong\u003e\u003c\/span\u003e?\u003c\/strong\u003e\u003cbr\u003e\n  A: Lower notch frequencies like 50 Hz increase input step response times up to 60 ms for maximum noise rejection, whereas higher filter settings like 480 Hz speed up response times to 6 ms at the expense of noise filtering.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQ: What causes an open-circuit fault indication on a connected temperature channel?\u003c\/strong\u003e\u003cbr\u003e\n  A: An open-circuit fault usually stems from a broken sensor wire, loose terminal block screw, or incorrect scaling configuration where no resistance is detected within the 0 to 600 ohm range.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQ: Can this module handle mixed sensor types across its two input channels simultaneously?\u003c\/strong\u003e\u003cbr\u003e\n  A: Yes, each channel operates independently, allowing technicians to configure different RTD profiles or direct resistance inputs across channel zero and channel one.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQ: What precautions prevent backplane power faults when adding this unit to an existing node?\u003c\/strong\u003e\u003cbr\u003e\n  A: Calculate the total current draw of all modules on the communication adapter. Since this unit pulls 220 mA from the 5V DC backplane, an auxiliary power expansion module may be required if current budgets are exceeded.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eQ: How should an engineer approach selecting between platinum and nickel RTD profiles for retrofits?\u003c\/strong\u003e\u003cbr\u003e\n  A: Review the sensor alpha curve stamped on the existing field probe. Matching the exact alpha coefficient (such as α=0.00385 for European platinum) in the software configuration ensures true temperature linearity and prevents measurement drift.\u003c\/p\u003e\n\n  \u003ch3\u003ePurchasing Guide\u003c\/h3\u003e\n  \u003cp\u003eWhen integrating the \u003cspan style=\"color:#d9534f;\"\u003e\u003cstrong\u003e1734-IR2\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color:#2980b9;\"\u003e\u003cstrong\u003ePOINT I\/O\u003c\/strong\u003e\u003c\/span\u003e \u003cspan style=\"color:#27ae60;\"\u003e\u003cstrong\u003eRTD \/ Resistance input module\u003c\/strong\u003e\u003c\/span\u003e into your layout, verify your controller's I\/O tree capacity and ensure your terminal base assembly is rated for the application environment. Global PLC Spare HUB recommends keeping spare base units on hand to streamline future maintenance cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013912027318,"sku":"1734-IR2","price":162.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1734-IR2_030fbff9-48d2-4405-a2bc-c66808195cea.jpg?v=1784701862","url":"https:\/\/www.plcsparehub.com\/products\/1734-ir2-point-i-o-rtd-module-allen-bradley-series","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}