Allen-Bradley 2711-K3A2L1 PanelView 300 Monochrome Keypad Terminal

The Allen-Bradley 2711-K3A2L1 is a PanelView 300 series operator interface terminal designed for industrial automation applications. This monochrome display unit features a keypad interface for operator input and is powered by a DC power supply. Although this model was discontinued by the manufacturer on June 30, 2012, it remains a critical component in legacy control systems requiring DH-485 communication connectivity.

Features

• 3-inch monochrome display for clear process visualization.
• Integrated keypad for reliable operator input in industrial environments.
• Supports DH-485 communication protocol for integration with Allen-Bradley controllers.
• Includes an RS-232 printer port for local data logging and reporting.
• Designed for DC power input.

Applications

This operator terminal is typically used in manufacturing and process control environments for monitoring machine status, adjusting setpoints, and managing alarm conditions in systems utilizing DH-485 networks.

Technical Specifications

Installation Guidelines

• Ensure the panel cutout is prepared according to the manufacturer's mounting template to maintain the required NEMA/IP seal rating.
• Use shielded communication cables for DH-485 connections to minimize electromagnetic interference (EMI).
• Verify that the DC power source meets the voltage requirements specified on the terminal nameplate before connection.
• Maintain proper ventilation around the unit to prevent overheating during continuous operation.
• Always disconnect power before installing or removing the terminal from the control panel.
• Handle with care to avoid damage to the display screen and keypad membrane.

FAQ

Is the 2711-K3A2L1 still supported by the manufacturer?
No, this model was discontinued on June 30, 2012. It is typically sourced through surplus or refurbished channels for legacy system maintenance.

What communication protocols does this terminal support?
This unit supports DH-485 communication and includes an RS-232 port specifically for printer connectivity.