{"product_id":"allen-bradley-1746-ia4-discrete-ac-input-module","title":"Allen-Bradley 1746-IA4 SLC 500 4-Channel 120V AC Input Module","description":"\u003cp\u003eThe Allen-Bradley 1746-IA4 is a discrete AC input module engineered for integration within the SLC 500 programmable controller platform. This module provides four isolated input channels designed to interface with 100\/120V AC field devices, offering a compact solution for applications requiring low-density AC input monitoring.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFour independent AC input channels.\u003c\/li\u003e\n\u003cli\u003eCompatible with standard 100\/120V AC control signals.\u003c\/li\u003e\n\u003cli\u003eIntegrated hardware filtering with 35 ms ON and 45 ms OFF signal delays to mitigate noise and contact bounce.\u003c\/li\u003e\n\u003cli\u003eFront-panel LED indicators for real-time status monitoring of each input channel.\u003c\/li\u003e\n\u003cli\u003eOptimized for low-power consumption with minimal backplane current requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis module is suitable for various industrial automation tasks where AC signal detection is necessary, such as monitoring limit switches, pushbuttons, or auxiliary contacts in control panels. Its small channel count makes it an efficient choice for distributed I\/O requirements or small-scale machine control.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\" style=\"border-collapse: collapse; width: 100%;\"\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSLC 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1746-IA4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e85-132V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12 mA at 120V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current (5V)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 to 60 degC (32 to 140 degF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Off-State Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Off-State Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the SLC 500 rack power is disconnected before installing or removing the 1746-IA4 module.\u003c\/li\u003e\n\u003cli\u003eSecure the module firmly into the chassis slot and tighten the mounting screws to ensure proper backplane connection.\u003c\/li\u003e\n\u003cli\u003eUse appropriate wire sizing and ensure all field wiring is routed away from high-voltage AC lines to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003cli\u003eVerify that the input voltage does not exceed the specified operating range to prevent module damage.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate ventilation within the cabinet to keep the ambient temperature within the 0 to 60 degC range.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eWhat is the primary function of the 1746-IA4?\u003c\/h3\u003e\u003cp\u003eThe 1746-IA4 is a digital input module used to detect the status of 120V AC field devices and convert those signals into logic levels for the SLC 500 processor.\u003c\/p\u003e\u003ch3\u003eDoes this module require 24V DC power?\u003c\/h3\u003e\u003cp\u003eNo, this module does not draw any current from the 24V DC backplane; it only consumes 35 mA from the 5V DC backplane.\u003c\/p\u003e\u003ch3\u003eCan this module be used for DC input signals?\u003c\/h3\u003e\u003cp\u003eNo, this module is specifically designed for AC signals (47-63 Hz). Using it with DC signals will not provide the intended logic transition and may result in improper operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48826183090366,"sku":"1746-IA4","price":78.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/wm_1_a0ba8af5-fc12-400c-a847-7bac14af268e.jpg?v=1788284732","url":"https:\/\/www.autooiltech.com\/ar\/products\/allen-bradley-1746-ia4-discrete-ac-input-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}