Allen-Bradley 2711P-RL12C2 Replacement Backlight

The Allen-Bradley 2711P-RL12C2 is an official replacement color backlight kit designed specifically for Series C 12.1-inch display modules in the PanelView Plus 1250 operator terminal family. This component allows maintenance personnel to restore dim, faded, or failed LCD screens efficiently without requiring a complete and costly replacement of the entire display assembly.

Functional Overview and Compatibility

Designed as a direct field-replacement assembly, this kit matches the electrical and mechanical requirements of compatible 1250 Series C terminals. Unlike earlier Series A and B versions of the PanelView Plus 1250 that utilize dual backlights, the Series C architecture integrates a single-backlight configuration secured with one fastening screw. Utilizing genuine replacement parts ensures proper illumination intensity and voltage compatibility with the internal inverter circuitry.

Technical Specifications

Installation Guidelines and Safety

Preparation and ESD Precautions

Before attempting any maintenance, completely isolate the terminal by disconnecting all incoming AC or DC power. Because internal circuit boards are sensitive to electrostatic discharge, technicians must wear a properly grounded ESD wristband and execute the procedure on a clean, static-safe workbench. Avoid touching exposed electronic components or the glass surface of the replacement lamp.

Replacement Steps

1. Place the display module face down on a stable, soft surface to protect the touchscreen and bezel from scratches.
2. Remove the enclosure and securing screws from the back of the display module to access the internal LCD chassis.
3. Disconnect the old backlight power connector from the internal circuit board.
4. Remove the single retention screw securing the spent backlight unit, slide out the old lamp assembly, and insert the 2711P-RL12C2 replacement.
5. Secure the new module with its mounting screw, reconnect the power lead firmly to the board, and reassemble the terminal housing.

Frequently Asked Questions

Q: Is the 2711P-RL12C2 compatible with PanelView Plus 1250 Series A or Series B terminals?

A: No. Series A and B units utilize part number 2711P-RL12C, which consists of a dual-backlight configuration. The 2711P-RL12C2 is engineered exclusively for Series C display modules which incorporate a single-lamp layout.

Q: How should the spent backlight assembly be discarded after replacement?

A: The removed fluorescent backlight assembly contains mercury. Dispose of or recycle the old component in strict compliance with local environmental health and safety regulations.