{"product_id":"allen-bradley-1756-it6i-controllogix-thermocouple-input-module","title":"Allen-Bradley 1756-IT6I ControlLogix Thermocouple Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IT6I ControlLogix Thermocouple Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IT6I\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IT6I\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethermocouple analog input module, serves as a dedicated\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eControlLogix temperature input module\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eutilized to execute isolated thermocouple and millivolt signal acquisition across ControlLogix backplane systems. Configured for direct conversion of low-level EMF signals, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IT6I (1756-IT6I thermocouple input module)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides six-channel electrically isolated measurement paths with internal CJC compensation for temperature reference correction.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1756\u003c\/strong\u003e: ControlLogix chassis I\/O platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIT6\u003c\/strong\u003e: 6-point thermocouple \/ millivolt input structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eI\u003c\/strong\u003e: Individually isolated input architecture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\/I or A\u003c\/strong\u003e: Hardware revision identifier (not fully specified in dataset)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNo further functional variants are defined in the provided data.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1756-IT6I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.38 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.3 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e6 isolated thermocouple\/mV channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Thermocouples\u003c\/td\u003e\n\u003ctd\u003eB, C, E, J, K, N, R, S, T, L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eThermocouple \/ millivolt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e16-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e-12 to 78 mV (floating point modes)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCJC Sensor\u003c\/td\u003e\n\u003ctd\u003e1 internal cold junction compensation channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 VDC)\u003c\/td\u003e\n\u003ctd\u003e250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 VDC)\u003c\/td\u003e\n\u003ctd\u003e125 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Scan Time\u003c\/td\u003e\n\u003ctd\u003e10 ms to 50 ms depending on data format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eInteger (2's complement), IEEE 32-bit floating point\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Blocks\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH, 1756-TBSH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eControlLogix chassis bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL, CE, CSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch3\u003eControlLogix Backplane Deterministic Thermocouple Acquisition Behavior\u003c\/h3\u003e\n\u003cp\u003eThe 1756-IT6I executes sigma-delta based signal conditioning prior to ControlLogix backplane data transfer. Thermocouple EMF signals and millivolt inputs are digitized per channel and mapped into either integer or IEEE 32-bit floating-point representations depending on configuration.\u003c\/p\u003e\n\u003cp\u003eChannel isolation ensures independent measurement domains, preventing ground loop interaction across thermocouple junctions. Cold junction compensation is performed using a dedicated reference channel to correct terminal temperature drift prior to scaling conversion.\u003c\/p\u003e\n\u003cp\u003eBackplane data exchange is synchronized with chassis scan cycles, with minimum scan time reaching 10 ms in integer mode for millivolt acquisition and extended cycles up to 50 ms in floating-point temperature conversion mode.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can all thermocouple types be mixed on the same module?\u003cbr\u003eA: Yes. Each of the six channels can be individually configured for different thermocouple types including J, K, T, E, R, S, B, N, C, and L.\u003c\/p\u003e\n\u003cp\u003eQ: How does channel isolation affect thermocouple accuracy?\u003cbr\u003eA: Channel-to-channel isolation eliminates electrical coupling between sensor junctions, reducing measurement error caused by shared ground potentials or loop interference.\u003c\/p\u003e\n\u003cp\u003eQ: What is the effect of scan mode selection on update speed?\u003cbr\u003eA: Integer mode provides faster scan performance (down to 10 ms), while IEEE floating-point temperature conversion increases scan time up to 50 ms due to additional scaling computation.\u003c\/p\u003e\n\u003chr\u003e\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall module into a compatible 1756 ControlLogix chassis slot with system power removed or approved hot-swap procedure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse specified RTB terminal blocks (1756-TBNH or 1756-TBSH) with full seating before energizing field circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain thermocouple wiring integrity using shielded compensation cable matched to sensor type\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAvoid routing thermocouple leads near high-voltage conductors or switching power lines\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure correct cold junction compensation placement and no airflow-induced temperature gradients at terminal block\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify thermocouple type configuration before loop activation to prevent scaling errors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43602855624794,"sku":"1756-IT61","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IT612.jpg?v=1783320124","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-it6i-controllogix-thermocouple-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}