The Allen-Bradley 2711-K5A3L1 is an operator terminal that is part of the 2711 family of visualization components. It belongs to the PanelView 550 sub-category of Human Machine Interface (HMI). This device is Allen-Bradley’s solution for implementing real-time monitoring and control of a wide variety of processes in different industries such as Mining, Semiconductor, Food and Beverage, Manufacturing, Automotive, Cement, Aviation, Petrochemical, Oil and Gas, among others.

The 2711-K5A3L1 comes with a visualization screen with display size of 120 x 60 mm (4.75 x 2.38 in.) and resolution of 256 x 128. The screen has a diagonal measurement of 5.5 inches that is made of LCD monochrome display. The provided operator interface is through the embedded keypad assembly that is made of a variety of buttons such as numeric input keys, directional buttons, confirm and cancel buttons and Ten (10) fully programmable function keys. These buttons are designed to operate up to 1 million actuations.

The 2711-K5A3L1 communicates with partner automation devices such as Programmable Logic Controllers (PLC), Gateways, converters and other 3rd party devices through the embedded DH485 communication port. This port directly supports SLC 500 or MicroLogix processors as well as PLC5, CompactLogix and ControlLogix system via communication adapters. Additionally, the 2711-K5A3L1 has an RS232 printer interface that supports communication with printers for obtaining hard copy of process and system alarms and events.

The 2711-K5A3L1 is designed to be installed in NEMA Type 12, 13, 4X (indoor use only), IEC IP54, IP65 rated enclosures. Recommended mounting clearance is 25mm (1 inch) clearances on all sides (except the bottom) while 38.1 mm (1.5 inch) is needed as bottom clearance. These clearances ensure that adequate air flow is maintained to prevent overheating of the device.

The 2711-K5A3L1 comes with built-in keys ranging from F1 to F10 that supports dynamic assignment. One can easily input various commands and necessary information as well as set alarms with advanced alarm facilities. The K5A3L1 unit is powered by 24 Volts DC power with internal memory amounting to 170 KB application runtime memory. It has a replaceable backlight with catalog number 2711-NL1. The approximate shipping weight and dimensions are 6 pounds and 14x11x8 inches, relatively. The K5A3L1 unit is supported by 46 universal languages and allows the user to secure application screens with the help of a dedicated password. In addition to the above features, this terminal can smoothly utilize ATA PC flash memory cards. To transfer applications or store special files, these memory cards come in quite handy, saving time in a safe and secure way.