{"product_id":"1746-int4-industrial-automation-module-by-allen-bradley","title":"1746-INT4 Industrial Automation Module by Allen-Bradley","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThe Allen-Bradley 1746-INT4 is a SLC 500 Isolated Thermocouple\/mV Analog Input Module designed for precise temperature and millivolt signal acquisition. As a Four (4) channel input module, it accepts a wide range of thermocouple types—C, D, J, K, T, E, R, S, B, and N—as well as –100…100 mV dc signals. This module converts analog sensor data into digital values that any SLC 500 processor can retrieve, making it an essential component for industrial temperature monitoring and control systems.\u003c\/p\u003e\u003cp\u003eWith its rugged construction and field-proven reliability, the 1746-INT4 ensures accurate and stable readings even in demanding environments. Whether you are upgrading an existing line or building a new control panel, this module delivers the performance and flexibility your application requires.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cp\u003eThe table below lists the key specifications for the Allen-Bradley 1746-INT4. All values are sourced directly from the manufacturer's data.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eRockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eIsolated Thermocouple\/mV Analog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 Volts)\u003c\/td\u003e\n\u003ctd\u003e110 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 Volts)\u003c\/td\u003e\n\u003ctd\u003e85 milliamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eFour (4); Isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermocouple Sensors\u003c\/td\u003e\n\u003ctd\u003eType C, D, J, K, T, E, R, S, B, and N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e8 Hertz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003emV Signal Inputs\u003c\/td\u003e\n\u003ctd\u003e–50…50 mV dc, –100…100 mV dc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermocouple Linearization\u003c\/td\u003e\n\u003ctd\u003eIPTS–68 standard, NBS MN–125, NBS MN–161\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCold Junction Compensation Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1.5 °C (34.7 °F), 0 … 70 °C (32…158 °F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpen-Circuit Detection\u003c\/td\u003e\n\u003ctd\u003eUpscale, downscale, or zero\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStep Response\u003c\/td\u003e\n\u003ctd\u003e100 milliseconds in, 2.5 milliseconds out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOpen Circuit Detection Time\u003c\/td\u003e\n\u003ctd\u003e5 s, typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Time\u003c\/td\u003e\n\u003ctd\u003e500 milliseconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16 Bits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIndustry Applications\u003c\/h2\u003e\u003cp\u003eThe 1746-INT4 excels in applications that require accurate temperature measurement and mV-level signal processing. Typical use cases include:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProcess control in chemical and petrochemical plants where precise thermocouple readings are critical.\u003c\/li\u003e\n\u003cli\u003eMonitoring of furnace or kiln temperatures in metal processing and ceramics manufacturing.\u003c\/li\u003e\n\u003cli\u003eData acquisition systems that interface with transducers producing millivolt outputs, such as strain gauges or pressure sensors.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThanks to its open-circuit detection and cold junction compensation, the module ensures reliable operation even when sensor wiring develops faults. The ability to select upscale, downscale, or zero output on fault conditions simplifies integration with HMI or SCADA systems, providing immediate visibility into signal integrity.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Setup Guidance\u003c\/h2\u003e\u003cp\u003eWhen installing the 1746-INT4, follow these practical steps to ensure optimal performance:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMount the module in any available slot of a SLC 500 chassis, ensuring proper backplane connection.\u003c\/li\u003e\n\u003cli\u003eWire thermocouple sensors to the module's terminals, respecting polarity and using appropriate thermocouple extension wire.\u003c\/li\u003e\n\u003cli\u003eConfigure the module's jumpers or software settings to match the thermocouple type and temperature scale (°C or °F) as required by your application.\u003c\/li\u003e\n\u003cli\u003eFor mV inputs, verify the signal range (–50…50 mV or –100…100 mV) and set the module accordingly.\u003c\/li\u003e\n\u003cli\u003eAfter installation, perform a field calibration and schedule annual recalibration to maintain accuracy, as the manufacturer recommends.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAlways refer to the SLC 500 installation manual for detailed wiring diagrams and safety precautions.\u003c\/p\u003e\u003ch2\u003eMaintenance \u0026amp; Reliability\u003c\/h2\u003e\u003cp\u003eThe 1746-INT4 is built for long service life, but routine maintenance is essential to sustain accuracy and reliability. Inspect the module and its wiring connections periodically for signs of corrosion, loose terminals, or damaged cables. Because the module requires field calibration, plan to recalibrate at least once per year. Environmental conditions also affect performance—operate the module within its specified temperature and humidity ranges (0–60 °C, 5–95% non-condensing) to avoid drift or premature failure. By following these simple practices, you can extend the module's lifespan and minimize unplanned downtime.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Integration\u003c\/h2\u003e\u003cp\u003eThe 1746-INT4 is part of the Allen-Bradley SLC 500 family and integrates seamlessly with any SLC 500 processor. It communicates over the backplane, so no additional network interfaces are required. The module's digital output data can be read by ladder logic or other programming environments, making it easy to incorporate into existing control strategies. Whether you are expanding an existing SLC 500 system or replacing a legacy module, the 1746-INT4 offers drop-in compatibility.\u003c\/p\u003e\u003ch2\u003eBuying Guide\u003c\/h2\u003e\u003cp\u003eBefore purchasing the 1746-INT4, verify that your system uses a SLC 500 platform and that you have an available slot in the chassis. Confirm the thermocouple types and mV ranges you need are supported—this module covers all common types. Also, check the backplane current consumption (110 mA @ 5VDC, 85 mA @ 24VDC) against your power supply capacity. For genuine Allen-Bradley parts and reliable service, PLC Source PRO is your trusted supplier. We stock a wide range of industrial automation components and can help you find the right part for your application.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default","offer_id":44434684870755,"sku":"1746-INT4","price":271.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0678\/8635\/0435\/files\/1746-A13_3__E5_89_AF_E6_9C_AC_4152a89a-a37d-45e7-afd3-54bd29cbf54a.jpg?v=1785767629","url":"https:\/\/www.plcsourcepro.com\/products\/1746-int4-industrial-automation-module-by-allen-bradley","provider":"PLC Source PRO","version":"1.0","type":"link"}