{"product_id":"allen-bradley-1762-l40bwa-micrologix-1200-40-point-controller","title":"Allen-Bradley 1762-L40BWA MicroLogix 1200 40 Point Controller","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003e\u003cspan class=\"citation-931\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e1762-L40BWA (1762L40BWA)\u003c\/strong\u003e\u003cspan class=\"citation-931 citation-end-931\"\u003e\u003cspan\u003e \u003c\/span\u003eis a high-performance, compact programmable logic controller within the MicroLogix 1200 family, engineered to handle complex industrial applications with a small physical footprint.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eFeaturing 40 integrated I\/O points (24 inputs and 16 outputs), this controller is a staple in critical infrastructure such as municipal water pumping stations, material handling conveyors, and specialized packaging machinery. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1762-L40BWA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovides the processing power necessary to reduce cycle times and optimize throughput. Its robust design ensures high reliability in demanding environments, minimizing unplanned downtime and maintaining system stability in 120\/240 VAC powered architectures.\u003c\/p\u003e\n\u003ch3\u003eTechnical Configuration\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1762-L40BWA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ehardware architecture is designed for versatility and expansion.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-930 citation-end-930\"\u003eIt features 24 VDC sink\/source inputs and highly durable relay outputs, allowing it to interface directly with various field devices.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-929 citation-end-929\"\u003eThe unit is powered by a 120\/240 VAC supply, eliminating the need for external DC power modules for the base controller operation.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eCommunication is handled via an isolated RS-232 port, supporting DF1, DH-485, and Modbus RTU protocols for seamless integration into existing SCADA or HMI networks. The controller’s memory is flash-based, protecting user programs and data without the absolute necessity of battery backup, though a battery (1747-BA) is supported for long-term data retention.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1762-L40BWA\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen-Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOrigin\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eUSA \/ Malaysia\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24 VDC Sink\/Source (24 points)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOutput Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRelay (16 points)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eInput Power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100-240 VAC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eUser Memory\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e6 KB (approx. 4 KB Instruction\/2 KB Data)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCommunication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRS-232 (8-pin mini-DIN)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eOperating Temp\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0 to 55 deg C\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e90 x 160 x 87 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.95 kg\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTechnical FAQs\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 1762-L40BWA support I\/O expansion beyond the built-in 40 points?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the MicroLogix 1200 series supports up to six 1762 expansion I\/O modules. These modules are connected via a ribbon cable on the right side of the unit, allowing for a significant increase in digital or analog point counts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat software is required to program this specific controller?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1762-L40BWA\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis programmed using RSLogix 500 software or MicroLogix-specific versions of the same suite. It is compatible with Windows-based environments and utilizes a standard ladder logic programming structure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I reset the controller to factory defaults if the password is lost?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eResetting the controller usually requires a specific memory clearing procedure or a factory-authorized \"Master Password\" depending on the firmware version. Note that a factory reset will erase all stored ladder logic and data tables.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eEngineering \u0026amp; Installation Guide\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRelay Output Longevity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTo extend the life of the internal relay contacts, always install an external suppression circuit (such as an RC snubber for AC loads or a diode for DC loads) when switching inductive loads like solenoids or motor starters. This prevents contact arcing and premature failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDIN Rail and Panel Mounting:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhile the unit supports DIN rail mounting, for high-vibration environments (such as rock crushing or heavy stamping), it is recommended to use the integrated screw mounting holes for a more secure, direct-to-panel installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrounding and Noise Reduction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure the \"Chassis Ground\" terminal is connected to a low-impedance earth ground using a short, heavy-gauge wire. This is critical for protecting the internal 24 VDC sensor power supply and ensuring stable RS-232 communication signals in electrically noisy industrial plants.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52695188537707,"sku":"1762-L40BWA","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/allen-bradley-1762-l40bwa-micrologix-1200-40-point-controller-ed4xi5bj2x3_3724e6e5-154e-4b4f-bc96-12ed5d3b362a.jpg?v=1766114546","url":"https:\/\/www.plcprotech.com\/products\/allen-bradley-1762-l40bwa-micrologix-1200-40-point-controller","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}