{"product_id":"1756-l75-b","title":"1756-L75","description":"\u003cp\u003eThe Allen-Bradley 1746-NR8 is an RTD\/resistance analog input module designed for use with SLC 500 programmable controller systems. It provides 8 analog input channels capable of measuring resistance directly from RTD sensors (2-, 3-, or 4-wire configurations) or resistance ranges for process feedback. The module digitizes the resistance measurement with sigma-delta conversion and delivers accurate, noise-immune data to the SLC CPU for monitoring and control tasks in industrial automation applications.\u003c\/p\u003e\n\u003ch3\u003eTechnical Details\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley 1746-NR8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eRTD\/Resistance Analog Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC System\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Input Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Sensor Types\u003c\/td\u003e\n\u003ctd\u003eRTDs (Platinum, Copper, Nickel, Nickel-Iron)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance Input Range\u003c\/td\u003e\n\u003ctd\u003e0–150 Ω, 0–300 Ω, 0–500 Ω, 0–1000 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Resolution\u003c\/td\u003e\n\u003ctd\u003eHigh resolution (e.g., ~0.01 °C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA\/D Conversion\u003c\/td\u003e\n\u003ctd\u003eSigma-delta modulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 V)\u003c\/td\u003e\n\u003ctd\u003e~100 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 V)\u003c\/td\u003e\n\u003ctd\u003e~55 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Power Consumption\u003c\/td\u003e\n\u003ctd\u003e~1.82 W maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUpdate Time\u003c\/td\u003e\n\u003ctd\u003e6 ms to 2 s (depending on configuration)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Filtering\u003c\/td\u003e\n\u003ctd\u003eLow-pass digital filter (programmable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003eChannel isolation via backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStatus Indicators\u003c\/td\u003e\n\u003ctd\u003eModule and per-channel LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 °C to 60 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 °C to 85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5 % to 95 % non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eSLC 500 chassis slot (not slot 0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Use Case\u003c\/td\u003e\n\u003ctd\u003eTemperature measurement via RTDs, resistance process monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Allen Bradley","offers":[{"title":"Original Packaging","offer_id":49349858033897,"sku":"1756-L75\/B","price":0.0,"currency_code":"USD","in_stock":false},{"title":"Marci Hardware Packaging","offer_id":49948759720169,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false},{"title":"Refurbished","offer_id":49948860645609,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0775\/2990\/7433\/files\/05599DBF-D1B2-47F0-BA79-285D1C544D4A_9f188bc3-84c2-4c97-9fe4-9cdc005c2aeb.jpg?v=1762506213","url":"https:\/\/marcinetworkhardware.com\/products\/1756-l75-b","provider":"Marci Network Hardware","version":"1.0","type":"link"}