{"product_id":"allen-bradley-1746-iv8-slc-500-dc-input-module","title":"Allen-Bradley 1746-IV8 SLC 500 24V DC Sourcing Input Module","description":"\u003cp\u003eThe Allen-Bradley 1746-IV8 is a high-performance digital input module engineered for the SLC 500 programmable logic controller platform. This module provides eight discrete input channels designed to process 24V DC signals from field-side devices such as proximity sensors, limit switches, and operator pushbuttons. As a current-sourcing module, it is optimized for integration with sinking-type (NPN) field devices.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEight (8) discrete current-sourcing input channels.\u003c\/li\u003e\n\u003cli\u003eNominal input voltage of 24V DC with an operating range of 10-30V DC.\u003c\/li\u003e\n\u003cli\u003eIntegrated signal filtering with a consistent 8 ms delay for both ON and OFF transitions to mitigate noise and contact bounce.\u003c\/li\u003e\n\u003cli\u003eIndividual front-panel LED indicators for real-time status monitoring of each channel.\u003c\/li\u003e\n\u003cli\u003eCompact SLC 500 form factor for efficient rack mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is widely utilized in industrial automation environments for monitoring the state of binary field devices. It is suitable for control systems in manufacturing, material handling, and process automation where reliable 24V DC signal acquisition is required.\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 Points\u003c\/td\u003e\n\u003ctd\u003e8 (1 group of 8)\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\u003eOff-State Voltage (Max)\u003c\/td\u003e\n\u003ctd\u003e5.0V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Current (Max)\u003c\/td\u003e\n\u003ctd\u003e1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input 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\u003eBackplane Current (5V)\u003c\/td\u003e\n\u003ctd\u003e50 mA\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 rack is powered down before inserting or removing the 1746-IV8 module to prevent electrical damage.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is fully seated in the SLC 500 chassis and secured with the top and bottom mounting screws.\u003c\/li\u003e\n\u003cli\u003eUse shielded cabling for input signal runs to minimize electromagnetic interference (EMI) in high-noise environments.\u003c\/li\u003e\n\u003cli\u003eMaintain proper ventilation in the control cabinet to ensure the module operates within the specified temperature range of 0 to 60 degC.\u003c\/li\u003e\n\u003cli\u003eAdhere to standard ESD (Electrostatic Discharge) handling procedures when touching the module circuitry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does it mean that this is a current-sourcing module?\u003c\/strong\u003e\u003cbr\u003eA current-sourcing module provides the positive voltage (24V DC) to the field device. Therefore, it is intended to be used with sinking-type (NPN) sensors or switches that connect the signal line to ground when activated.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this module with 120V AC inputs?\u003c\/strong\u003e\u003cbr\u003eNo, the 1746-IV8 is specifically designed for 24V DC applications. Using it with AC voltage or voltages outside the 10-30V DC range will cause permanent damage to the module.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48821775335614,"sku":"1746-IV8","price":93.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/wm_1_186e81af-629f-4fbb-9d09-12969662da98.jpg?v=1788244509","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1746-iv8-slc-500-dc-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}