{"product_id":"allen-bradley-1790d-t4t0-compactblock-ldx-i-o-module","title":"Allen-Bradley 1790D-T4T0 | CompactBlock LDX I\/O Module","description":"\u003ch2\u003e\u003cstrong\u003eProduct Overview: Allen-Bradley 1790D-T4T0 Thermocouple Base Module\u003c\/strong\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technical Specifications and Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e The module is manufactured by \u003cstrong\u003eAllen-Bradley\u003c\/strong\u003e under the model number \u003cstrong style=\"color: #2e86c1;\"\u003e1790D-T4T0\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Channels:\u003c\/strong\u003e It provides four completely independent input channels for temperature measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Sensors:\u003c\/strong\u003e The module works with a wide range of thermocouple types, including J, K, T, E, N, R, S, B, and linear millivolt inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Resolution:\u003c\/strong\u003e A 20-bit Sigma-Delta converter ensures high-resolution data with \u003cstrong\u003e16-bit\u003c\/strong\u003e output, scaled at \u003cstrong\u003e0.1°C or 0.1°F per bit\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Accuracy:\u003c\/strong\u003e It maintains an impressive overall accuracy of \u003cstrong\u003e0.2% of full scale\u003c\/strong\u003e within its operating temperature range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Scanning:\u003c\/strong\u003e The module scans all four channels every \u003cstrong\u003e140 milliseconds\u003c\/strong\u003e for near real-time data updates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Filtering:\u003c\/strong\u003e A configurable notch filter (10, 25, 50, 60, 100, 250, 500 Hz) helps eliminate electrical noise for stable readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Feature:\u003c\/strong\u003e Built-in \u003cstrong\u003eopen wire detection\u003c\/strong\u003e immediately flags sensor connection issues as an \"out of range\" status.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eDetailed Operating Parameters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Signal Range:\u003c\/strong\u003e The module accepts a voltage range from \u003cstrong\u003e-76.50 mV to +76.50 mV\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Ranges:\u003c\/strong\u003e Each thermocouple type has a specific valid range, for example, Type K from -270 to 1370°C and Type J from -210 to 1200°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Junction Compensation:\u003c\/strong\u003e This feature is active across a range of \u003cstrong\u003e0 to 70°C\u003c\/strong\u003e for accurate ambient temperature correction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Requirements:\u003c\/strong\u003e The DeviceNet side operates on \u003cstrong\u003e24V DC nominal\u003c\/strong\u003e (11V DC minimum). Separate field power is \u003cstrong\u003e24V DC nominal\u003c\/strong\u003e (21.6 - 26.4V DC).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Environment:\u003c\/strong\u003e The module functions reliably in ambient temperatures from \u003cstrong\u003e0 to 55 degrees Celsius\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Isolation:\u003c\/strong\u003e It features \u003cstrong\u003ephotocoupler isolation\u003c\/strong\u003e (1250V AC for 60s) between I\/O and logic circuits for safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection \u0026amp; Wiring:\u003c\/strong\u003e It uses a terminal block with M3.0 screws, with a maximum torque of \u003cstrong\u003e7 lb-in\u003c\/strong\u003e. Use copper or copper-clad conductors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Is this module brand new and authentic?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we supply only \u003cstrong\u003e100% new, genuine, and original\u003c\/strong\u003e Allen-Bradley products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How many temperature sensors can I connect?\u003c\/strong\u003e\u003cbr\u003eA: The \u003cstrong style=\"color: #2e86c1;\"\u003e1790D-T4T0\u003c\/strong\u003e provides \u003cstrong\u003efour separate channels\u003c\/strong\u003e, so you can connect up to four different thermocouples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What thermocouple types does it support?\u003c\/strong\u003e\u003cbr\u003eA: It supports common types like J, K, T, E, N, R, S, B, and also accepts direct millivolt voltage signals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Do you have this item in stock?\u003c\/strong\u003e\u003cbr\u003eA: Yes, we typically have this module \u003cstrong\u003ein stock and ready for immediate shipment\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How quickly will my order ship?\u003c\/strong\u003e\u003cbr\u003eA: We process and ship orders within \u003cstrong\u003e5 business days\u003c\/strong\u003e after payment confirmation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is your return policy?\u003c\/strong\u003e\u003cbr\u003eA: We offer a \u003cstrong\u003e30-day return policy\u003c\/strong\u003e for unused items in their original packaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the module's scan rate?\u003c\/strong\u003e\u003cbr\u003eA: It scans all four input channels every \u003cstrong\u003e140 milliseconds\u003c\/strong\u003e, providing fast data updates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: Can it detect a broken sensor wire?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the module features \u003cstrong\u003eopen wire detection\u003c\/strong\u003e and will report the issue to the controller.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e© 2026 NexAuto Technology Limited. All rights reserved.\u003cbr\u003eOriginal Source: \u003ca href=\"https:\/\/www.nex-auto.com\/\"\u003ehttps:\/\/www.nex-auto.com\/\u003c\/a\u003e\u003cbr\u003eContact: \u003ca href=\"mailto:sales@nex-auto.com\"\u003esales@nex-auto.com\u003c\/a\u003e\u003cbr\u003ePhone: \u003ca href=\"https:\/\/wa.me\/8615392429628\"\u003e+86 153 9242 9628\u003c\/a\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47266149826818,"sku":"1790D-T4T0","price":240.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7280\/6146\/files\/1790D-T4T0.jpg?v=1770283406","url":"https:\/\/www.nex-auto.com\/tr\/products\/allen-bradley-1790d-t4t0-compactblock-ldx-i-o-module","provider":"NexAuto Technology Limited","version":"1.0","type":"link"}