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The Allen-Bradley 2711-B5A3L1 is a PanelView 550 operator terminal designed for reliable human-machine interface (HMI) applications in industrial environments. This DC-powered unit serves as a critical control interface, allowing operators to monitor system variables, execute manual commands, and manage automated processes. Built for durability, the terminal replaces complex physical pushbutton arrays with a consolidated electronic interface, reducing wiring requirements and enhancing system uptime in sectors such as petrochemical, water treatment, and automated packaging.
This operator terminal is suitable for a wide range of industrial automation tasks, including machine control, process monitoring, and data logging in manufacturing facilities. Its robust design allows for operation in high-vibration environments where traditional mechanical interfaces might fail.
| Model | 2711-B5A3L1 |
| Product Line | PanelView 550 |
| Input Power | 24 VDC nominal |
| Display Size | 5.5 inches |
| Display Type | Monochrome blue-mode LCD |
| Resolution | 256 x 128 pixels |
| Input Method | Touchscreen and Keypad |
| Memory | 170 KB application runtime |
| Communication | DH-485 and RS-232 (Printer) |
| Operating Temperature | 0 to 55 deg C |
| Lifecycle Status | Discontinued / Obsolete |
The 2711-B5A3L1 is classified as a discontinued or obsolete product. While it remains a reliable component for existing legacy systems, users should plan for eventual migration to modern HMI platforms.
Yes, the display backlight is field-replaceable using the 2711-NL1 replacement module.
This model features an integrated DH-485 port for network communication and an independent RS-232 serial port specifically for printer data logging.