{"product_id":"1769-l23e-qb1b-allen-bradley-512kb-cpu-controller-unit","title":"1769-L23E-QB1B Allen-Bradley 512KB CPU Controller Unit","description":"\u003ch2\u003eAllen-Bradley 1769-L23E-QB1B CompactLogix Controller Unit\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1769-L23E-QB1B\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1769-L23E-QB1B\u003c\/strong\u003e CompactLogix Controller Unit, operates as a dedicated hardware component for integrated logic processing, discrete\/analog signal acquisition, and serial\/Ethernet communication within CompactLogix control architectures. The packaged controller integrates 512 KB user memory, embedded I\/O channels (16 DC inputs, 16 DC outputs, 4 analog inputs, 2 analog outputs), an EtherNet\/IP port, and an RS-232 serial interface to execute real-time machine automation tasks directly while supporting expansion across local 1769 modules.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1769-L23E-QB1B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.08 kg (2.38 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e185.2 x 118 x 123.9 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1000 mA at 5 VDC, 710 mA at 24 VDC (7 W power dissipation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply Input\u003c\/td\u003e\n\u003ctd\u003eIntegrated 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e512 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmbedded Discrete I\/O\u003c\/td\u003e\n\u003ctd\u003e16 24 VDC inputs (sink\/source), 16 24 VDC outputs (source)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmbedded Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e4 analog inputs, 2 analog outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003e1 Ethernet RJ-45 (10\/100 Mbps), 1 RS-232 serial port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal Expansion Limit\u003c\/td\u003e\n\u003ctd\u003eUp to 2 or 3 local 1769 expansion modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory Backup Battery\u003c\/td\u003e\n\u003ctd\u003e1769-BA lithium battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eIndustrial Control \u0026amp; Drive Integration\u003c\/h3\u003e\n\u003cp\u003eThe packaged controller relies on backplane bus communication velocity to manage execution timing across concurrent control tasks and local 1769 I\/O expansion expansion cards. EtherNet\/IP deterministic networks deliver scheduled I\/O message routing and peer-to-peer data transfers over 10\/100 Mbps Ethernet channels. Firmware flash compatibility checks ensure sustained synchronization between logic execution, memory tables, and serial DF1\/DH-485 communications.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1769-L23E-QB1B controller support hot-swapping or Removal and Insertion Under Power (RIUP)?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1769-L23E-QB1B does not support RIUP. Disconnecting or attaching local 1769 expansion modules while the 24 VDC input power is active causes backplane bus errors and risks damaging internal circuit components.\u003c\/p\u003e\n\u003cp\u003eQ: How is non-volatile program memory maintained during an unpowered state?\u003c\/p\u003e\n\u003cp\u003eA: The controller retains volatile memory via an installable 1769-BA lithium battery. Ensure the battery maintains adequate charge levels to prevent project logic and variable state erasure when main power shuts down.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the controller vertically onto a standard 35 mm DIN rail or secure it directly to an enclosure backplate using mounting screws. Install a 1769-ECR right end cap on the right side of the assembly to terminate the 1769 backplane bus properly before applying power. Maintain a minimum clearance of 50 mm above and below the chassis for adequate convection thermal dissipation. Segregate 24 VDC power, analog signal lines, and Ethernet communication cabling from high-voltage AC lines to prevent EMI-induced signal corruption.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52921271255352,"sku":"1769-L23E-QB1B","price":188.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0893\/1616\/3896\/files\/334.jpg?v=1788833473","url":"https:\/\/www.automodulexpert.com\/products\/1769-l23e-qb1b-allen-bradley-512kb-cpu-controller-unit","provider":"AutoModuleXpert Ltd.","version":"1.0","type":"link"}