A-B 80190-560-02-R｜Programmable Automation｜

• Allen Bradley 1756-L71 is a ControlLogix programmable automation controller. It has 2 MB of user memory and 0.98 MB of I/O memory. It also has an onboard 4-character alphanumeric display screen, which can easily monitor runtime and module information, as well as controller diagnostics. It has an open shell and one (1) built-in 2.0 full speed USB port. The available communication options include DeviceNet, ControlNet, EtherNet/IP, Remote I/O Data Highway Plus, third-party processes and networks, and SynchLink. It also comes with 1 GB of non-volatile memory, but you can upgrade it to 2 GB using 1784-SD2. It is recommended to keep the SD card in the controller. The 1756-L71 controller comes with three capacitor energy storage modules, two of which are detachable. Its current consumption is 5 mA at 1.2 V DC and 800 mA at 5.1 V DC. The 1756-L71 controller also has a continuous isolation voltage of 30 volts, a maximum power consumption of 2.5 watts, and 8.5 BTU/hour of heat dissipation. Its maximum analog I/O, digital I/O, and total I/O are 4000, 128000, and 128000, respectively. The working temperature of this product is 0 to 60 degrees Celsius, and the storage temperature is -40 to 85 degrees Celsius. The maximum ambient air temperature is 60 degrees Celsius, and the non condensing relative humidity is 5% to 95%. The controller has 2G vibration, 30G operating shock, and 50G non operating shock at frequencies ranging from 10 to 500 Hz, which will decrease to 45G when installing an SD card. Other controllers can require users to first understand the PLC registers, especially bytes and bits, in order to begin addressing program elements. Using 1756-L71, users only need to insert a program element and select the logical channel for physically connecting I/O. In other PLCs, users may find it necessary to move one register to another to initiate conversion and processing, simply to obtain analog data. This controller only requires the user to find the logical channel where the I/O signal is physically terminated.