Name: 2711-k5a5_a_panelview_550 - MASSIVE
SKU: 2711-k5a5_a_panelview_550

2711-k5a5_a_panelview_550

Brand Allen-Bradley

Model 2711-k5a5_a_panelview_550

The Allen-Bradley 2711-K5A5 is a PanelView 550 Standard Operator Terminal from Rockwell Automation, designed for compact, keypad-driven human-machine interface applications in industrial control environments. As a monochrome keypad variant within the PanelView 550 series, the 2711-K5A5 features a 5.5-inch transflective LCD display with LED backlighting, ten programmable function keys, and an embedded RS-232 communication port supporting the DH-485 protocol. The terminal operates on an 85–264 VAC power supply, making it compatible with standard industrial control cabinet voltages. Like many PanelView Standard products, the 2711-K5A5 has been discontinued by the manufacturer, yet it remains widely deployed in legacy systems where replacement and surplus units continue to serve critical maintenance needs .

The 2711-K5A5 provides a practical interface solution for operators who require tactile input rather than touchscreen interaction, a configuration often preferred in environments where gloves are worn or where screen contamination is a concern. Its 256 × 128 pixel resolution and 120 × 60 mm display area are sufficient for displaying process values, alarm messages, and simple graphical objects configured through PanelBuilder32 software. The terminal connects to a range of Allen-Bradley controllers—including SLC 500, PLC-5, MicroLogix, and CompactLogix families—via its DH-485 communication port, enabling localized monitoring and control at the machine level . As a discontinued but still serviceable component, the Allen-Bradley 2711-K5A5 represents a pragmatic choice for facilities maintaining existing PanelView 550 infrastructure without pursuing full HMI migration.

Description

Technical Specifications

Parameter Name	Parameter Value
Product Model	2711-K5A5
Manufacturer	Allen-Bradley / Rockwell Automation
Product Type	PanelView 550 Standard Operator Terminal
Display Size	5.5-inch monochrome transflective LCD
Display Resolution	256 × 128 pixels
Display Area	120 × 60 mm (4.75 × 2.38 in.)
Backlight Type	LED, 100,000-hour rated life
Operator Input	Keypad with 10 function keys (F1–F10) plus numeric/navigation keys
Communication Port	RS-232 (DH-485 protocol)
Input Voltage	85–264 VAC, 47–63 Hz
Application Memory	170 KB runtime; 240 KB nonvolatile
Operating Temperature	0°C to 55°C
Enclosure Rating	NEMA Type 12/13, 4X (indoor), IP54, IP65
Weight	Approximately 1.36 kg

Main Features and Advantages

Keypad-centric operation for demanding environments: The 2711-K5A5 is built around a membrane keypad with ten function keys, numeric entry keys, and navigation controls, providing tactile feedback that touchscreens cannot match. This design proves particularly advantageous in manufacturing areas where operators wear heavy gloves, where airborne dust or coolant mist could interfere with capacitive touch sensing, or where inadvertent screen contact must be avoided. Each function key can be assigned local or global variables through PanelBuilder32, allowing engineers to tailor the interface to specific machine sequences and operator workflows.

Proven DH-485 connectivity with broad PLC compatibility: The 2711-K5A5 communicates via an embedded RS-232 port configured for DH-485 protocol, a network standard that remains entrenched in thousands of Allen-Bradley control systems worldwide. This compatibility extends across SLC 500, PLC-5, MicroLogix, and CompactLogix controllers, enabling the terminal to integrate into existing architectures without requiring network gateways or protocol converters . For facilities standardized on DH-485 networks, the 2711-K5A5 offers a direct, familiar path to operator interface deployment.

Reliable monochrome display with long service life: The transflective LCD panel of the 2711-K5A5 maintains readability under varying lighting conditions, from dim control rooms to brightly lit plant floors. The LED backlight carries a rated life of 100,000 hours, reducing the frequency of display maintenance compared to earlier CCFL-based designs . Combined with the terminal’s NEMA 4X and IP65 enclosure ratings, the 2711-K5A5 is engineered to withstand washdowns, dust, and the general rigors of industrial operation without sacrificing display clarity or input responsiveness.