{"product_id":"allen-bradley-1746-io4-slc-500-combination-module-120vac","title":"Allen-Bradley 1746-IO4 SLC 500 Combination Module | 120VAC","description":"\u003ch2 style=\"color: #1A237E; font-size: 22px; font-weight: bold; margin-bottom: 12px;\"\u003eAllen-Bradley 1746-IO4 SLC 500 AC Digital Combination Module\u003c\/h2\u003e\n\n\u003cp style=\"font-size: 14px; line-height: 1.5; color: #333333; margin-bottom: 15px;\"\u003e\n  The \u003cstrong style=\"color: #0D47A1;\"\u003e\u003cspan style=\"color: #0D47A1;\"\u003eAllen-Bradley 1746-IO4\u003c\/span\u003e\u003c\/strong\u003e is a compact combination digital I\/O module designed for the SLC 500 rack-based PLC architecture. Weighing approximately \u003cstrong\u003e0.25 kg (0.55 lbs)\u003c\/strong\u003e, this module features 2 digital AC inputs and 2 relay contact outputs arranged in a single common group, offering an space-efficient solution for small-scale 120V AC automation and device control.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1A237E; font-size: 16px; font-weight: bold; margin-bottom: 8px;\"\u003eKey System \u0026amp; Operational Features\u003c\/h3\u003e\n\u003cp style=\"font-size: 14px; line-height: 1.5; color: #333333; margin-bottom: 15px;\"\u003e\n  Operating within a voltage range of 85 to 132V AC (47–63 Hz) for inputs, the 1746-IO4 dissipates just 0.27 Watts per input channel during operation. Its relay contact outputs handle a continuous current of up to 4A, supporting switching capacities of 1.5A at 120V AC and 1.2A at 24V DC. Front-panel status LEDs provide immediate channel diagnostics, while low backplane current consumption (30 mA @ 5V DC \/ 25 mA @ 24V DC) ensures optimal power rack budgeting.\n\u003c\/p\u003e\n\n\u003ch3 style=\"color: #1A237E; font-size: 16px; font-weight: bold; margin-bottom: 8px;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 13px; color: #333333; margin-bottom: 15px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"background-color: #F5F5F5;\"\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0; width: 40%;\"\u003eManufacturer \u0026amp; Series\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003eRockwell Automation | Allen-Bradley SLC 500\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003ePart \/ Catalog Number\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e1746-IO4\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #F5F5F5;\"\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eModule Configuration\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003eCombination Digital Module (2 Inputs \/ 2 Relay Outputs)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eInput Operating Voltage\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e85…132V AC @ 47…63 Hz\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #F5F5F5;\"\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eOutput Voltage \u0026amp; Continuous Current\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e5…265V AC \/ 5…125V DC | 4A Continuous Max\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eSignal Delay Time\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e35…45 milliseconds\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #F5F5F5;\"\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eBackplane Power Consumption\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e30 mA @ 5V DC | 25 mA @ 24V DC\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"padding: 8px; font-weight: bold; border: 1px solid #E0E0E0;\"\u003eOperating Temperature \u0026amp; Weight\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px; border: 1px solid #E0E0E0;\"\u003e-25 °C to +60 °C (-13 °F to +140 °F) | Approx. 0.25 kg\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color: #1A237E; font-size: 16px; font-weight: bold; margin-bottom: 8px;\"\u003eInstallation \u0026amp; Handling Guidelines\u003c\/h3\u003e\n\u003cul style=\"font-size: 14px; line-height: 1.5; color: #333333; margin-bottom: 15px; padding-left: 20px;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRack Slot Installation:\u003c\/strong\u003e Insert the module into any available slot of an SLC 500 chassis (except slot 0, reserved for CPU) until the top and bottom retaining levers click into place.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Block Wiring:\u003c\/strong\u003e Terminal screws feature self-lifting pressure plates designed to accept up to two 14 AWG (2.0 mm²) copper conductors per terminal.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCable Separation:\u003c\/strong\u003e Route incoming AC main power feeds separately from low-voltage field sensor cabling to avoid EMI noise coupling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #1A237E; font-size: 16px; font-weight: bold; margin-bottom: 8px;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp style=\"font-size: 13px; line-height: 1.4; color: #333333; margin-bottom: 10px;\"\u003e\n  \u003cstrong\u003eQ1: What is the channel capacity of the Allen-Bradley 1746-IO4 module?\u003c\/strong\u003e\u003cbr\u003e\n  A1: The module provides 2 digital AC inputs and 2 relay contact outputs grouped in single commons.\n\u003c\/p\u003e\n\u003cp style=\"font-size: 13px; line-height: 1.4; color: #333333; margin-bottom: 10px;\"\u003e\n  \u003cstrong\u003eQ2: What is the operating voltage range for the input channels?\u003c\/strong\u003e\u003cbr\u003e\n  A2: The inputs accept a standard operating range of 85V to 132V AC at frequencies between 47Hz and 63Hz.\n\u003c\/p\u003e\n\u003cp style=\"font-size: 13px; line-height: 1.4; color: #333333; margin-bottom: 10px;\"\u003e\n  \u003cstrong\u003eQ3: How much backplane current does the 1746-IO4 consume?\u003c\/strong\u003e\u003cbr\u003e\n  A3: It draws 30 mA (0.030 A) from the 5V DC backplane bus and 25 mA (0.025 A) from the 24V DC bus.\n\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52763831566468,"sku":"1746-IO4","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/1746-IO4.jpg?v=1788611599","url":"https:\/\/www.etowonauto.com\/products\/allen-bradley-1746-io4-slc-500-combination-module-120vac","provider":"Etowon Auto","version":"1.0","type":"link"}