Product Overview

The Allen-Bradley 2711-B5A8L3 is a robust operator terminal from the PanelView 550 series, designed to provide reliable human-machine interface (HMI) capabilities in demanding industrial environments. This unit features a hybrid input design, combining a resistive touchscreen with a tactile keypad, allowing for versatile control and monitoring of automated processes. It is engineered for long-term deployment in sectors such as water treatment, chemical processing, and automated manufacturing, where it serves to streamline operator interaction and reduce system downtime.

Hardware Features

The 2711-B5A8L3 utilizes a 5.5-inch monochrome blue-mode LCD display, offering a clear 256 x 128 pixel resolution suitable for process visualization. The input system includes 10 dedicated function keys (F1-F10) alongside a touchscreen matrix with 128 active cells, ensuring operational reliability even in high-vibration settings. For networking and data management, the terminal is equipped with a Data Highway Plus (DH+) communication port for deterministic plant-floor connectivity and an RS-232 serial port for local printer logging.

Technical Specifications

Installation Guidelines

• Ensure the panel cutout is prepared according to the manufacturer's mounting specifications to maintain the NEMA/IP rating of the enclosure.
• Verify that the DC power supply is within the 18-32 VDC range before connection to prevent damage to the internal circuitry.
• Use shielded cables for DH+ and RS-232 communications to minimize electromagnetic interference (EMI) in high-noise industrial areas.
• Always power down the terminal before connecting or disconnecting communication cables or performing maintenance.
• Handle the unit with care to avoid damage to the resistive touchscreen overlay and the LCD backlight assembly.

FAQ

Is this terminal still in production? No, the 2711-B5A8L3 is classified as a discontinued or obsolete product by the manufacturer. We provide these units as spare parts for legacy system maintenance.

What is the primary communication protocol for this unit? This model features a dedicated Data Highway Plus (DH+) port, which is the standard for high-speed deterministic networking in legacy Allen-Bradley architectures.