{"product_id":"allen-bradley-1756-l73k-controllogix-5570-standard-controller","title":"Allen Bradley 1756‑L73K ControlLogix 5570 Standard Controller","description":"\u003ch2\u003eAllen Bradley 1756‑L73K ControlLogix 5570 Standard Controller\u003c\/h2\u003e\n\u003cp\u003eConfigured for chassis‑based controller execution in ControlLogix 5570 systems, the \u003cstrong\u003eAllen Bradley 1756‑L73K\u003c\/strong\u003e (\u003cstrong\u003e1756‑L73K\u003c\/strong\u003e controller) provides direct CPU processing, backplane communication, and nonvolatile storage for large‑scale discrete and analogue I\/O deployments.\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\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\u003cth\u003eModel\u003c\/th\u003e\n\u003ctd\u003e1756‑L73K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eAllen Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOrigin\u003c\/th\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003eapprox. 0.25 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Temp\u003c\/th\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower Consumption\u003c\/th\u003e\n\u003ctd\u003e2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCore Performance Indicators\u003c\/th\u003e\n\u003ctd\u003e8 MB user memory, 0.98 MB I\/O memory, 1 GB SD card, 128,000 digital I\/O max, 4000 analogue I\/O max, USB 2.0 (12 Mbps), capacitor energy storage module options\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity \u0026amp; Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eWithin ControlLogix architectures, the 1756‑L73K participates in deterministic \u003cstrong\u003ebackplane bus communication velocity\u003c\/strong\u003e governed by the ControlLogix backplane protocol. Its memory structure (8 MB user, 0.98 MB I\/O) supports high‑density tag databases without scan‑time instability. The controller’s electrical profile—5 mA @ 1.2 V DC and 800 mA @ 5.1 V DC—maintains predictable loading across multi‑slot chassis configurations.\u003c\/p\u003e\n\u003cp\u003eFirmware flash compatibility aligns with standard ControlLogix upgrade procedures. Stable backplane power and SD‑card availability ensure safe firmware transitions without requiring module‑specific adaptations. Conformal coating provides additional environmental tolerance without altering firmware behavior.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1756‑L73K be installed in any chassis slot A: Yes. It is chassis‑based and may be installed in any slot of supported 1756 chassis.\u003c\/p\u003e\n\u003cp\u003eQ: Is the USB port intended for permanent operation A: No. The USB 2.0 port is for temporary programming only and must not be used in hazardous locations.\u003c\/p\u003e\n\u003cp\u003eQ: Does the controller support removable energy storage modules A: Yes. Multiple capacitor energy storage module types are supported, including removable and non‑removable variants.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eMount the controller in a supported 1756 chassis and verify correct seating of the energy storage module. Maintain separation between USB cabling and high‑voltage conductors. Follow conductor category 3 routing rules for the USB interface. Ensure environmental conditions meet temperature, humidity, vibration, and shock specifications. Avoid contamination sources and verify grounding according to industrial wiring guidelines.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48214933078206,"sku":"1756‑L73K","price":470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/allen-bradley-1756-en2t-controllogix-ethernet-ip-bridge-module-10-100-fe-u5gmywxgmx2_6b9a572a-4fff-4b71-bfa9-180ea303ed45.png?v=1759029042","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1756-l73k-controllogix-5570-standard-controller","provider":"AutoOilTech Limited","version":"1.0","type":"link"}