{"product_id":"1746-int4-allen-bradley-slc-500-isolated-thermocouple-mv-input-module","title":"1746-INT4 | Allen-Bradley | SLC 500 Isolated Thermocouple\/mV Input Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1746-INT4\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides high-resolution temperature and low-voltage analog acquisition for the SLC 500 PLC platform. This module specializes in interfacing directly with thermocouples and millivolt (mV) sources, eliminating the need for external signal transmitters. It supports a wide array of thermocouple types and millivolt ranges, including ±50 mV and ±100 mV DC. We supply this unit in\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003econdition, ensuring your legacy SLC systems maintain factory-certified accuracy and long-term stability.\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\u003eSpecification 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\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\u003eModel Number\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1746-INT4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSLC 500\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\u003eIsolated Thermocouple \/ Millivolt Input\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4 Isolated Channels\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eMillivolt Ranges\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e-50 to +50 mVDC \/ -100 to +100 mVDC\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\u003e110 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\u003e85 mA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eChannel-to-Backplane and Channel-to-Channel\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.60 lbs (0.27 kg)\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\u003cp\u003eThe 1746-INT4 solves critical signal integrity issues in industrial thermal processing environments:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuperior Channel Isolation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module features individual galvanic isolation for each input channel. This architecture prevents ground loops and repels high-voltage transients that typically corrupt low-level millivolt signals in large-scale furnace or boiler applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect Thermocouple Integration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eInternal cold-junction compensation and linearization allow the module to interface directly with Type J, K, T, E, R, S, B, and N thermocouples. This hardware integration reduces hardware costs by removing the requirement for intermediate mV-to-4-20mA converters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision Millivolt Acquisition:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe ±50 mV and ±100 mV DC ranges facilitate the use of high-accuracy sensors and shunts. The 1746-INT4 captures minute voltage fluctuations, providing the SLC processor with the granular data required for tight PID control loops.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSimplified Slot Configuration:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module fits into any available I\/O slot in a 1746 chassis. It utilizes standard SLC 500 addressing and configuration blocks, allowing for rapid deployment and commissioning without specialized communication bridge modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRuggedized Signal Conditioning:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOnboard digital filtering repels 50\/60 Hz line noise. This ensures the PLC receives stable temperature data even when cables run near high-power motors or variable frequency drives (VFDs).\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\u003eHow do I verify the \"Brand New\" status of this 1746-INT4?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee every unit arrives in its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoriginal Allen-Bradley factory packaging with intact security seals\u003c\/strong\u003e. This ensures the internal capacitors and semiconductors have never experienced thermal stress or electrical runtime, which is critical for maintaining the accuracy of an analog input module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1746-INT4 require an external power supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. The module draws its required operating current (110mA @ 5V and 85mA @ 24V) directly from the SLC 500 chassis backplane. You must ensure your chassis power supply has sufficient capacity to support the addition of this analog module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I mix thermocouple types on the same module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. You configure each of the four channels independently through the PLC programming software (RSLogix 500). This allows you to monitor different temperature ranges or sensor types (e.g., Type K and Type J) on a single 1746-INT4 module.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs this module a direct replacement for existing SLC 500 thermocouple cards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 1746-INT4 serves as the standard isolated thermocouple input for the SLC 500 family. It offers superior noise immunity compared to non-isolated variants, making it the preferred choice for industrial environments with significant electrical interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53196932382904,"sku":"1746-INT4","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/1746-INT4_893cd396-82a8-427f-89f1-9329aae84e9f.jpg?v=1774945588","url":"https:\/\/www.globalpetroparts.com\/products\/1746-int4-allen-bradley-slc-500-isolated-thermocouple-mv-input-module","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}