{"product_id":"allen-bradley-1746-iv8-slc-500-dc-input-module","title":"Allen-Bradley 1746-IV8 SLC 500 24V DC Digital Input Module","description":"\u003cp\u003eThe Allen-Bradley 1746-IV8 is a high-performance discrete DC input module engineered for integration within the SLC 500 programmable controller platform. This module provides 8 current-sourcing input channels, specifically designed to interface with sinking-type (NPN) field devices such as proximity sensors, limit switches, and control pushbuttons. Its robust architecture ensures reliable signal acquisition in standard industrial automation environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEight (8) dedicated current-sourcing input channels.\u003c\/li\u003e\n\u003cli\u003eNominal input voltage of 24V DC with an operating range of 10 to 30V DC.\u003c\/li\u003e\n\u003cli\u003eIntegrated signal filtering with an 8 ms delay for both ON and OFF transitions to mitigate noise and contact bounce.\u003c\/li\u003e\n\u003cli\u003eFront-panel LED indicators for each channel to facilitate rapid visual status monitoring and troubleshooting.\u003c\/li\u003e\n\u003cli\u003eCompact SLC 500 form factor designed for efficient backplane mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is ideal for industrial control systems requiring reliable 24V DC signal monitoring. It is frequently deployed in manufacturing lines, assembly machinery, and process control applications where sinking-type field sensors are utilized for logic input.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\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\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC Input (Sourcing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Range\u003c\/td\u003e\n\u003ctd\u003e10-30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Off-State Voltage\u003c\/td\u003e\n\u003ctd\u003e5.0V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Off-State Current\u003c\/td\u003e\n\u003ctd\u003e1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd\u003e50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e8 mA @ 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay\u003c\/td\u003e\n\u003ctd\u003e8 ms (ON\/OFF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the PLC backplane power is disconnected before installing or removing the module.\u003c\/li\u003e\n\u003cli\u003eAlign the module carefully with the chassis slot and engage the locking tabs to secure the unit.\u003c\/li\u003e\n\u003cli\u003eUse appropriate shielded cabling for input signals to reduce electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the module to ensure proper airflow and cooling within the enclosure.\u003c\/li\u003e\n\u003cli\u003eVerify that input device polarity matches the sourcing configuration of the module.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat type of field devices are compatible with the 1746-IV8?\u003c\/strong\u003e\u003cbr\u003eThe 1746-IV8 is a sourcing module, meaning it is designed to work with sinking (NPN) field devices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this module require external power for the inputs?\u003c\/strong\u003e\u003cbr\u003eYes, the module is designed for 24V DC operation; ensure your field power supply is within the 10-30V DC range specified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the signal delay for this module?\u003c\/strong\u003e\u003cbr\u003eThe module features a fixed 8 ms signal delay for both ON and OFF transitions to provide stable logic processing.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":44010112909402,"sku":"1746-IV8","price":93.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_85587312-0135-4805-acce-34d88c3b150b.jpg?v=1788503920","url":"https:\/\/www.spareoil.com\/products\/allen-bradley-1746-iv8-slc-500-dc-input-module","provider":"SpareOil Automation","version":"1.0","type":"link"}