The 1756-L73K controller is a ControlLogix 5570 series controller manufactured by Allen-Bradley. Its standard user memory capacity is 8 megabytes and its input/output memory is 0.98 megabytes. Its current draw ratings are 5 milliamps and 800 milliamps at 1.2 Volts DC and 5.1 Volts DC, respectively. This unit can perform up to 32 controller tasks, run up to 100 programs, and makeup to 500 connections that are used for Ethernet input/output and Ethernet messaging. It has event triggers for all its tasks and it ships with an Allen-Bradley 1784-SD1 1-gigabyte non-volatile SD card. Its approximate weight is 0.25 kilograms.
Like all Allen-Bradley ControlLogix controllers, the 1756-L73K controller monitors and controls input/output across the ControlLogix backplane or over the network. Its communication port is a USB 2.0 port that has a speed of 12 megabits per second. The USB port can be used for temporary local programming and the 1756-L73K ControlLogix controller can be programmed in a StudioLogix 5000 Designer software environment. It supports a variety of communication network options such as the EtherNet/IP, ControlNet, DeviceNet, SynchLink, and the Data Highway Plus networks. The programming languages that can be used on this module include the Relay Ladder, Function Block Diagram, Structured Text, and Sequential Function Chart (SFC) languages. The 1756-L73K ControlLogix controller is equipped with an energy storage module and its conformal coating provides additional environmental protection. Its scrolling LED display provides real-time status information of the controller and other I/O devices in a ControlLogix 5570 system. This module can be installed in any 1-inch-wide slot of a ControlLogix chassis alongside other controllers.
FAQ for 1756-L73K
The Allen-Bradley 1756-L73K is a ControlLogix 5570 controller that is a part of the Logix5000 family of controllers. It has a conformal coating for high-performance and operating in harsh environments. It has greater processing capabilities and speed for motion, high-performance logic, and redundancy applications. It has a USB port for communication. It can support up to 500 controller connections.
The 1756-L73K controller has 8MB of user memory and 0.98MB of I/O memory. It can support 128,000 digital I/O and 4000 analog I/O. It draws a current of 5mA at 1.2V DC and 800mA at 5.1V DC. It has a power dissipation of 2.5W and thermal dissipation of 8.5 BTU/hr. It weighs 0.55lbs and has an isolation voltage of 30V (continuous) for basic insulation. It can be installed in any slot of a ControlLogix 1756 Chassis and multiple controllers can also be installed in the same chassis. For communication, it has options like ControlNet, DeviceNet, EtherNet/IP, Remote I/O, and many third-party process and device networks. It is programmed using RSLogix 5000 software with relay ladder logic, structured text, function block or Sequential Function Chart (SFC).
The 1756-L73K controller can control or monitor I/O over the backplane or through I/O links. For controller diagnostics, it has a front display that provides runtime information. It functions using the 1756-ESMCAP and the 1756-ESMCAPK energy storage modules, meaning that lithium batteries are not needed. A 1 GB (1784-SD1) Secure Digital card comes pre-installed as an optional non-volatile storage which can be expanded up to 2 GB (1784-SD2).
Revisions for 1756-L73K
Please refer to the manual for more information about the 1756-L73K such as the wiring diagrams, data sheets,
firmware information and migration or obsolescence details.
|Revision Part #
||Also Known as
||1756-L73K/A, Series A, Rev A