{"product_id":"allen-bradley-1756-ia8d-diagnostic-ac-input-module","title":"Allen-Bradley 1756-IA8D ControlLogix Diagnostic Input Module","description":"\u003cp\u003eThe Allen-Bradley 1756-IA8D is a high-performance diagnostic AC input module designed for integration within the ControlLogix platform. This module provides 8 diagnostic inputs, enabling advanced monitoring capabilities that allow for proactive fault detection and system maintenance in demanding industrial environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e8-point diagnostic AC input configuration\u003c\/li\u003e\n\u003cli\u003e120V AC nominal input voltage for standard industrial control applications\u003c\/li\u003e\n\u003cli\u003eProgrammable input delay times of 9 or 18 milliseconds to accommodate specific signal filtering requirements\u003c\/li\u003e\n\u003cli\u003eEnhanced diagnostic reporting for improved system uptime and troubleshooting\u003c\/li\u003e\n\u003cli\u003eCompatible with the standard ControlLogix backplane chassis\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis diagnostic module is engineered for use in applications where input signal integrity and status monitoring are critical. It is commonly deployed in manufacturing lines, power generation control systems, and automated process control environments where diagnostic feedback helps reduce downtime by identifying field-side wiring or signal issues quickly.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Model\u003c\/td\u003e\n\u003ctd\u003e1756-IA8D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDiagnostic Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Points\u003c\/td\u003e\n\u003ctd\u003e8 Diagnostic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e79-132V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003eProgrammable (9 or 18 ms)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin. Operating Current\u003c\/td\u003e\n\u003ctd\u003e5 mA at 79V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Operating Current\u003c\/td\u003e\n\u003ctd\u003e16 mA at 132V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Off-State Current\u003c\/td\u003e\n\u003ctd\u003e2.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the ControlLogix chassis is powered down before inserting or removing the module.\u003c\/li\u003e\n\u003cli\u003eUse appropriate ESD protection when handling the module to prevent damage to sensitive internal components.\u003c\/li\u003e\n\u003cli\u003eVerify that the module is fully seated in the chassis slot and that the locking tab is secure.\u003c\/li\u003e\n\u003cli\u003eEnsure that field wiring is routed away from high-voltage or high-EMI sources to maintain signal accuracy.\u003c\/li\u003e\n\u003cli\u003eCheck that the input voltage levels strictly adhere to the 79-132V AC operating range to avoid module damage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the primary advantage of the 1756-IA8D over a standard input module?\u003c\/strong\u003e\u003cbr\u003eThe 1756-IA8D includes diagnostic functionality that allows the controller to detect specific fault conditions, such as open or short circuits, which standard modules cannot identify.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan the input delay be adjusted?\u003c\/strong\u003e\u003cbr\u003eYes, the input delay is software-programmable to either 9 or 18 milliseconds, allowing you to tune the module to reject noise or accommodate slower signal transitions.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":51215460860156,"sku":"1756-IA8D","price":122.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_a27fcfbd-9ce6-4faf-8f9e-8105a786f34a.jpg?v=1788298177","url":"https:\/\/www.electronicplc.com\/es\/products\/allen-bradley-1756-ia8d-diagnostic-ac-input-module","provider":"Electronic PLC","version":"1.0","type":"link"}