Allen Bradley 2711-K5A8 PanelView 550 Keypad Monochrome Operator Interface

Product Overview

The Allen Bradley 2711-K5A8 serves as a high-durability operator interface terminal within the PanelView 550 Standard series. This HMI features a 5.3-inch blue monochrome liquid crystal display (LCD) with a resolution of 256 x 128 pixels, providing clear visualization of machine status and process variables. Designed for tactile environments, the unit utilizes a rugged keypad for operator input, ensuring reliable command execution even when users wear industrial gloves. Equipped with integrated Data Highway Plus (DH+) and RS-232 communication ports, the 2711-K5A8 facilitates seamless data exchange with PLC-5, SLC 500, and other high-level controller networks.

Technical Specifications

Engineering Advantages

• Native DH+ Integration: The 2711-K5A8 features a dedicated Data Highway Plus port. This allows the terminal to sit directly on existing DH+ plant-floor networks, eliminating the need for expensive protocol converters or interface modules when communicating with legacy PLC-5 or SLC 500 systems.

• Tactile Command Reliability: The mechanical keypad offers distinct physical feedback for every button press. This design solves the "ghost touch" and durability issues associated with touchscreens in high-vibration environments or areas where heavy industrial grease and oils contaminate the display surface.

• Wide AC Input Range: The internal power supply accepts a universal 100–240V AC input. This wide voltage tolerance ensures stable HMI operation despite the brownouts or voltage spikes common in heavy industrial facilities, protecting the internal electronics from power-related failures.

• Dual-Port Diagnostics and Printing: The inclusion of an RS-232 port alongside the primary network port allows for simultaneous printer connection or local program downloads. Engineers can extract alarm logs and process data directly without interrupting the primary DH+ control network traffic.

• NEMA Rated Front Panel: When properly installed in a panel cutout, the front face maintains a high degree of protection against dust and liquid ingress. This ruggedized seal protects the internal monochrome LCD from moisture and fine particulates found in machining and woodworking sectors.

FAQs

• Is the 2711-K5A8 supplied as Brand New?

  Yes. We supply this terminal as 100% Brand New in original factory-sealed packaging. This guarantees that the backlight and keypad membrane have had zero previous cycles, ensuring maximum service life for your critical operations.

• Can I use the RS-232 port for primary PLC communication?

  The RS-232 port on the 2711-K5A8 typically functions as a printer port or for point-to-point application downloads. Primary PLC communication occurs through the DH+ port. Verify your network architecture to ensure compatibility with the Data Highway Plus protocol.

• Does this unit replace other PanelView 550 models?

  The 2711-K5A8 serves as a direct replacement for existing K5A8 terminals. While it shares the 550 series dimensions, always ensure your controller supports the DH+ protocol if you are migrating from a different communication type like DH-485 or DeviceNet.

• What software is required to configure the 2711-K5A8?

  You must use PanelBuilder32 software to create and download applications to the 2711-K5A8. The unit supports both local download via RS-232 and network download via a compatible DH+ interface.