{"product_id":"allen-bradley-1768-l45s-compactlogix-guardlogix-controller","title":"Allen-Bradley 1768-L45S CompactLogix GuardLogix Controller","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1768-L45S\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1768-L45\u003c\/strong\u003e GuardLogix Safety Controller, operates as a dedicated hardware component for SIL 3 \/ PL e safety logic execution and system orchestration within CompactLogix control systems.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBase Part Number\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSuffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eHardware Revision Description\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1768-L45\u003c\/td\u003e\n\u003ctd\u003eS\u003c\/td\u003e\n\u003ctd\u003eIntegrated safety memory layer (1 MB) for SIL 3 \/ PL e safety execution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\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\u003e1768-L45S\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.64 kg (1.40 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eCompactLogix 1768 CPU module footprint\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\u003e50.4 W (Backplane: 2.1 A at 24 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e9.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandard Memory\u003c\/td\u003e\n\u003ctd\u003e3 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Memory\u003c\/td\u003e\n\u003ctd\u003e1 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocal 1768 I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 4 modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal 1769 I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 30 local and remote modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O Banks\u003c\/td\u003e\n\u003ctd\u003e3 banks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Interface\u003c\/td\u003e\n\u003ctd\u003e1 x RS-232 serial port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Isolation\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP Deterministic Networks and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eI\/O Density Scaling\u003c\/strong\u003e: Direct backplane bus support handles up to 4 local high-speed 1768 modules attached to the CPU bank, with system expansion supporting up to 30 local and remote 1769 Compact I\/O modules distributed across 3 I\/O banks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEtherNet\/IP Deterministic Networks\u003c\/strong\u003e: Coordinates safety task execution and standard control messaging over EtherNet\/IP and ControlNet deterministic networks using CIP Safety protocol extensions across adjacent 1768 communication modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware Flash Compatibility\u003c\/strong\u003e: Fully synchronized with Studio 5000 \/ RSLogix 5000 configuration environments, enforcing safety signature validation, memory partition locking, and firmware flashing routines via backplane or serial links.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is internal memory partitioned on the 1768-L45S GuardLogix processor?\u003c\/p\u003e\n\u003cp\u003eA: The module contains 3 MB of standard memory allocated for process routines and standard logic, alongside 1 MB of dedicated safety memory reserved exclusively for safety task routines.\u003c\/p\u003e\n\u003cp\u003eQ: What are the backplane current draw and power consumption metrics for the 1768-L45S?\u003c\/p\u003e\n\u003cp\u003eA: The controller draws 2.1 A at 24 VDC from the backplane, resulting in a maximum power consumption rating of 50.4 W and a thermal power dissipation of 9.5 W.\u003c\/p\u003e\n\u003cp\u003eQ: What physical communication ports are directly integrated into the processor front panel?\u003c\/p\u003e\n\u003cp\u003eA: The unit includes one embedded RS-232 serial interface port for direct point-to-point programming, ASCII device connection, or modem interface.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Mounting\u003c\/strong\u003e: Secure the controller directly to a grounded metal panel or DIN rail inside a protective cabinet using M4 or #8 mounting screws, ensuring locking latches are fully engaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Isolation during Cabling\u003c\/strong\u003e: Isolate power to the controller and external serial devices before connecting or disconnecting the RS-232 serial cable to eliminate electrical arcing hazards in classified areas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Cable Shielding\u003c\/strong\u003e: Utilize standard 1756-CP3 or 1747-CP3 serial cables with right-angle connectors, ensuring low-impedance connection of the cable shield to cabinet ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeat Dissipation Clearance\u003c\/strong\u003e: Maintain adequate top and bottom panel ventilation spacing to allow convection airflow to dissipate up to 9.5 W of operating thermal energy.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48596661076158,"sku":"1768-L45S","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1336-GM2_a1b0e91c-87ac-4be3-bd55-a2930fbd4f40.png?v=1786086957","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1768-l45s-compactlogix-guardlogix-controller","provider":"AutoOilTech Limited","version":"1.0","type":"link"}