{"product_id":"1756-l72sk-allen-bradley-controllogix-guardlogix-controller","title":"1756-L72SK Allen-Bradley ControlLogix GuardLogix Controller","description":"\u003cp\u003eConfigured for controller execution and safety-oriented logic processing in a ControlLogix architecture, the \u003cstrong\u003eAllen-Bradley 1756-L72SK\u003c\/strong\u003e (\u003cstrong\u003e1756-L72SK\u003c\/strong\u003e GuardLogix Controller) provides processor resources for I\/O data handling and controller-level execution.\u003c\/p\u003e\n\u003ch3\u003eModel Identification\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L72SK is specified as a GuardLogix Controller within the ControlLogix family. The supplied data identifies 4 MB of user memory, 0.98 MB of I\/O memory, and a maximum I\/O capacity of 128,000 points. No additional suffix interpretation is established from the supplied information.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1756-L72SK\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\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eGuardLogix Controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e4 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eI\/O Memory\u003c\/td\u003e\n\u003ctd\u003e0.98 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum I\/O\u003c\/td\u003e\n\u003ctd\u003e128,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e4,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Digital I\/O\u003c\/td\u003e\n\u003ctd\u003e128,000\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw at 1.2 VDC\u003c\/td\u003e\n\u003ctd\u003e5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCurrent Draw at 5.1 VDC\u003c\/td\u003e\n\u003ctd\u003e800 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Dissipation\u003c\/td\u003e\n\u003ctd\u003e2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e8.5 BTU\/hour\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003eNot specified in supplied data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e2.5 W power dissipation\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\u003e0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e3.5 x 14.4 x 14.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTariff Code\u003c\/td\u003e\n\u003ctd\u003e8537101190\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eControlLogix Safety Controller Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe controller interfaces with the ControlLogix backplane and has a specified current draw of 800 mA at 5.1 VDC and 5 mA at 1.2 VDC. These values are relevant when determining chassis power loading.\u003c\/p\u003e\n\u003cp\u003eThe stated I\/O capacity is 128,000 points, with up to 4,000 analog I\/O points. The supplied specification also lists 128,000 maximum digital I\/O points.\u003c\/p\u003e\n\u003cp\u003eThe specified 30 V continuous isolation voltage applies to the supplied controller specification. The available data does not define individual channel isolation, network isolation, or a specific galvanic isolation architecture.\u003c\/p\u003e\n\u003cp\u003eBecause the model is identified as a GuardLogix Controller, safety application configuration must be matched to the applicable GuardLogix system architecture, firmware, and safety configuration requirements. No specific SIL or PL rating is asserted here because it is not provided in the supplied data.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-L72SK GuardLogix Controller\u003c\/li\u003e\n\u003cli\u003e1 x Controller module corresponding to catalog number 1756-L72SK\u003c\/li\u003e\n\u003cli\u003eNo separate chassis, communication adapter, or programming cable is specified in the supplied product information\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Commissioning Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the controller in a compatible ControlLogix chassis according to the applicable hardware installation procedure.\u003c\/li\u003e\n\u003cli\u003eVerify that available chassis backplane capacity accommodates the specified 800 mA current draw at 5.1 VDC.\u003c\/li\u003e\n\u003cli\u003eInclude the stated 2.5 W power dissipation in chassis thermal calculations.\u003c\/li\u003e\n\u003cli\u003eUse appropriate ESD handling procedures when removing or installing the controller.\u003c\/li\u003e\n\u003cli\u003eKeep controller wiring and communication conductors separated from high-energy power conductors where practical.\u003c\/li\u003e\n\u003cli\u003eVerify controller firmware compatibility with the intended GuardLogix project before commissioning.\u003c\/li\u003e\n\u003cli\u003eSafety-related configuration should be validated using the applicable GuardLogix engineering and verification procedures.\u003c\/li\u003e\n\u003cli\u003eDo not assign an operating temperature range because none is provided in the supplied technical data.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat type of controller is the 1756-L72SK?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied product information identifies the 1756-L72SK as a GuardLogix Controller within the ControlLogix series.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow much user memory is provided?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specified user memory capacity is 4 MB. This value should be considered when evaluating controller application and project memory requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the available I\/O memory?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe controller is specified with 0.98 MB of I\/O memory for controller I\/O data handling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the maximum I\/O capacity?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied specification lists a maximum of 128,000 I\/O points, including a maximum analog I\/O capacity of 4,000 points.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the 5.1 VDC current draw?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe specified current draw is 800 mA at 5.1 VDC. Chassis power calculations should account for this load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the controller power dissipation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe supplied data specifies 2.5 W power dissipation and 8.5 BTU\/hour thermal dissipation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat isolation voltage is specified?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe controller is specified for 30 V continuous isolation voltage. The supplied data does not define channel-level isolation characteristics.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIs the operating temperature range specified?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo operating temperature range is included in the supplied information. A specific environmental limit should therefore not be inferred.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066418155693,"sku":"1756-L72SK","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/1756-L72SK_3.jpg?v=1786544606","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1756-l72sk-allen-bradley-controllogix-guardlogix-controller","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}