{"product_id":"allen-bradley-1756-a4-controllogix-chassis","title":"Allen-Bradley - 1756-A4 ControlLogix Chassis","description":"\u003ch2\u003eAllen-Bradley 1756-A4 ControlLogix Chassis\u003c\/h2\u003e\n\u003ch3\u003eQuick Specifications Overview\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Slots:\u003c\/strong\u003e \u003cmark\u003e4 module slots\u003c\/mark\u003e including processor and I\/O\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Dimensions:\u003c\/strong\u003e 263 x 169 x 145 mm (10.35\" x 6.65\" x 5.71\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Power:\u003c\/strong\u003e 15A @ 5.1V DC total capacity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Dissipation:\u003c\/strong\u003e 4 Watts maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Horizontal panel mounting only\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.75 kg (1.7 lb) lightweight design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e Open-style for cabinet installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChassis Configuration Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlot Capacity:\u003c\/strong\u003e Four total slots for module installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply Location:\u003c\/strong\u003e Separate dedicated mounting area\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Compatibility:\u003c\/strong\u003e All ControlLogix processors and I\/O modules\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmpty Slot Requirement:\u003c\/strong\u003e 1756-N2 filler modules mandatory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Method:\u003c\/strong\u003e Secure panel mounting with provided hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePower Distribution System\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.1V DC Backplane:\u003c\/strong\u003e 15A chassis total \/ 6A per slot maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24V DC Backplane:\u003c\/strong\u003e 2.8A chassis total \/ 2.8A per slot maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3.3V DC Backplane:\u003c\/strong\u003e 4A chassis total \/ 4A per slot maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1.2V DC Backplane:\u003c\/strong\u003e 1.5A chassis total \/ 1.5A per slot maximum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e Low 4W power dissipation for cool operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePhysical Dimensions \u0026amp; Space Planning\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Footprint:\u003c\/strong\u003e 263mm width x 169mm height x 145mm depth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Cabinet Size:\u003c\/strong\u003e 507 x 507 x 203 mm (20\" x 20\" x 8\")\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight Characteristics:\u003c\/strong\u003e Lightweight 0.75kg for easy handling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePanel Clearance:\u003c\/strong\u003e Adequate space for wiring and maintenance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Ideal for space-constrained installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCompatible Power Supplies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Models:\u003c\/strong\u003e 1756-PA72, 1756-PB72\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Models:\u003c\/strong\u003e 1756-PA75, 1756-PB75, 1756-PC75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialized Models:\u003c\/strong\u003e 1756-PH75 for specific applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelection Guidance:\u003c\/strong\u003e Choose based on module power requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation Note:\u003c\/strong\u003e Power supply mounts separately from main slots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAdvanced System Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRIUP Capability:\u003c\/strong\u003e Safe Removal and Insertion Under Power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Keying:\u003c\/strong\u003e Prevents incorrect module installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Speed Backplane:\u003c\/strong\u003e Optimized module-to-module communication\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHot Swap Support:\u003c\/strong\u003e Module replacement without system shutdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiagnostic Monitoring:\u003c\/strong\u003e System status and health indicators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation Requirements\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Orientation:\u003c\/strong\u003e Horizontal mounting mandatory\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCabinet Requirements:\u003c\/strong\u003e Standard industrial enclosure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVentilation Needs:\u003c\/strong\u003e Adequate air circulation around chassis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Access:\u003c\/strong\u003e Front-accessible terminal blocks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Compliance:\u003c\/strong\u003e Follow all local electrical codes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Control Systems:\u003c\/strong\u003e Small machine automation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistributed I\/O Applications:\u003c\/strong\u003e Remote I\/O drops\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem Expansion:\u003c\/strong\u003e Additional I\/O capacity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone Applications:\u003c\/strong\u003e Dedicated process control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMobile Equipment:\u003c\/strong\u003e Space-constrained installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eWhat are the main advantages of the 4-slot chassis?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003e1756-A4\u003c\/strong\u003e provides \u003cmark\u003ecompact size with full ControlLogix performance\u003c\/mark\u003e, perfect for applications where space is limited but reliability is critical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHow many modules can I install in this chassis?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eYou can install up to four ControlLogix modules, including processors, I\/O, communication, and specialty modules in any combination.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat power supplies are compatible?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe chassis works with 1756-PA72, PB72, PA75, PB75, PC75, and PH75 power supplies, chosen based on your module power requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCan this chassis be used in distributed systems?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eYes, the 1756-A4 is ideal for distributed I\/O applications when equipped with a communication adapter module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat are the RIUP capabilities?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRemoval and Insertion Under Power allows safe module replacement while the system remains operational, minimizing downtime.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eHow much cabinet space is required?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlan for minimum 20\" W x 20\" H x 8\" D cabinet space to accommodate the chassis and provide proper maintenance access.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat about empty slots?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAll unused slots must be filled with 1756-N2 slot filler modules for safety and proper air flow.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor technical specifications and application assistance, contact our automation experts at: \u003cu\u003e\u003cstrong\u003esales@nex-auto.com\u003c\/strong\u003e\u003c\/u\u003e\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45382166511777,"sku":"1756-A4","price":352.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/5390\/3265\/files\/1756-A4.jpg?v=1763368008","url":"https:\/\/www.autonexcontrol.com\/cs\/products\/allen-bradley-1756-a4-controllogix-chassis","provider":"AutoNex Controls Limited ","version":"1.0","type":"link"}