{"product_id":"allen-bradley-1746-nt4-slc-500-series-thermocouple-input-module","title":"Allen-Bradley 1746-NT4 SLC 500 Series Thermocouple Input Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1746-NT4\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1746-NT4\u003c\/strong\u003e Thermocouple Input Module, operates as a dedicated hardware component for thermocouple signal acquisition and temperature measurement within the SLC 500 control system platform.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1746-NT4 is a 4-channel thermocouple input module designed for Allen-Bradley SLC 500 programmable controllers. It converts thermocouple millivolt signals into digital values for PLC processing. The module supports multiple thermocouple types and analog input ranges.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\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\u003e1746-NT4\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\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eThermocouple Input Modules\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.26 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.5 x 13 x 14.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e4 thermocouple input points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eThermocouple millivolt input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Thermocouple Types\u003c\/td\u003e\n\u003ctd\u003eType B, E, J, K, N, R, S, T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Range\u003c\/td\u003e\n\u003ctd\u003e50 mV or 100 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Classification\u003c\/td\u003e\n\u003ctd\u003eAnalog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley SLC 500 chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control Interface Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1746-NT4 integrates into the SLC 500 backplane architecture and transfers converted temperature data to the processor through the controller bus interface. The module is configured through PLC software parameters for thermocouple type selection and input scaling.\u003c\/p\u003e\n\u003cp\u003eThe SLC 500 platform uses a modular I\/O structure where analog input density can be expanded by adding compatible modules within the chassis configuration. The 1746-NT4 provides 4 thermocouple measurement channels for temperature monitoring applications requiring direct millivolt signal conversion.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1746-NT4 Thermocouple Input Module\u003c\/li\u003e\n\u003cli\u003eModule type: 4-channel thermocouple analog input\u003c\/li\u003e\n\u003cli\u003eCompatible spare models:\n\u003cul\u003e\n\u003cli\u003e1746-NT4\/A\u003c\/li\u003e\n\u003cli\u003e1746-NT4\/B\u003c\/li\u003e\n\u003cli\u003e1746NT4\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in a compatible Allen-Bradley SLC 500 chassis slot.\u003c\/li\u003e\n\u003cli\u003eVerify chassis power is removed before module insertion or removal.\u003c\/li\u003e\n\u003cli\u003eUse shielded thermocouple wiring where electrical noise may affect millivolt measurements.\u003c\/li\u003e\n\u003cli\u003eKeep thermocouple signal wiring separated from high-current motor and power cables.\u003c\/li\u003e\n\u003cli\u003eConfirm thermocouple type configuration matches the connected field sensor.\u003c\/li\u003e\n\u003cli\u003eConnect cable shields according to the grounding practice defined for the control cabinet.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhat type of input signals does the 1746-NT4 accept?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module accepts thermocouple millivolt signals and supports Type B, E, J, K, N, R, S, and T thermocouple inputs.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHow many temperature channels are available?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 1746-NT4 provides 4 independent thermocouple input channels for temperature measurement.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIs the 1746-NT4 compatible with SLC 500 controllers?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes. The module is designed for installation in Allen-Bradley SLC 500 chassis systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the module provide analog signal conversion?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eYes. The module converts thermocouple millivolt signals into digital data values for PLC processing.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat input voltage ranges are supported?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module supports thermocouple signal ranges of 50 mV and 100 mV.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCan different thermocouple types be connected simultaneously?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConfiguration requirements should be verified before operation. Each channel must match the connected thermocouple sensor type.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDoes the module support hot swapping?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe module should not be inserted or removed from an energized chassis. Power removal is required before installation changes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhat wiring practices are recommended?\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUse appropriate thermocouple extension wiring, maintain signal separation, and apply cabinet grounding practices to reduce electrical interference.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066407538861,"sku":"1746-NT4","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1746-NT4_1-2.jpg?v=1785902341","url":"https:\/\/www.maxwellplc.com\/ga\/products\/allen-bradley-1746-nt4-slc-500-series-thermocouple-input-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}