The Allen-Bradley 2711-K5A9L3 is an operator terminal from the PanelView 550 series, designed for human-machine interface (HMI) applications in industrial environments. This unit features a 5.5-inch monochrome blue mode LCD display and a 10-key keypad input, providing a reliable interface for monitoring and controlling legacy machinery.

Features

• 5.5-inch monochrome blue mode LCD display for clear process visualization.
• Integrated 10-key keypad for operator input (F1-F10).
• 170 KB of internal application runtime memory.
• Supports RS-232 (DH-485) communication for connectivity with PLC and SLC controllers.
• Dedicated RS-232 printer port for local data logging and reporting.

Applications

This terminal is suitable for industrial control systems requiring serial communication integration. It is commonly used in legacy automation setups to provide real-time status monitoring, analog gauge emulation, and secure screen management for plant floor operations.

Technical Specifications

Installation Guidelines

• Ensure the terminal is mounted in a suitable enclosure that provides adequate protection against dust, moisture, and extreme temperatures.
• Verify that the 24 VDC power supply is stable and properly grounded to prevent electrical noise interference.
• Use shielded communication cables for RS-232 connections to minimize EMI in industrial environments.
• Always power down the unit before connecting or disconnecting communication cables or power leads.
• Maintain proper clearance around the unit to ensure adequate ventilation and cooling during operation.

FAQ

Is this unit still supported for new installations?

The 2711-K5A9L3 is considered an obsolete component. It is primarily utilized as a replacement part for existing legacy systems where upgrading to modern HMI platforms is not currently feasible.

What type of power input does this terminal require?

This model operates on a 24 VDC power source. Please ensure your power supply meets the voltage requirements before installation.