Excellent PLC
Product Introduction
The Allen-Bradley 2711-K5A5L1 PanelView 550 Operator Interface is a compact industrial HMI designed for machine-level monitoring and basic process control applications. As part of the PanelView 550 series, it is built to provide stable operator interaction in small to medium automation systems where simplicity and reliability are more important than advanced graphics.
This model features a 5.5-inch monochrome LCD display with a resolution of 256 × 128 pixels. The screen is optimized for text-based data presentation, alarms, and simple status indicators, ensuring clear readability in continuous industrial operation. Its keypad-only input design provides durable and reliable operation, especially in environments where touchscreen use is not preferred.
The unit supports RS-232 (DH-485) communication, making it suitable for integration with Allen-Bradley PLC systems such as SLC 500 and MicroLogix controllers. Powered by a 24 VDC supply, it is commonly used in control cabinets where DC power distribution is standard.
With its compact size, stable communication capability, and proven industrial design, the 2711-K5A5L1 is widely applied in legacy system maintenance and basic automation control tasks.
Product Specifications
| Parameter | Description |
|---|---|
| Product Model | 2711-K5A5L1 |
| Series | PanelView 550 |
| Display Type | Monochrome LCD |
| Display Size | 5.5 inch |
| Resolution | 256 × 128 pixels |
| Input Method | Keypad |
| Communication Protocol | RS-232 (DH-485) |
| Power Supply | 24 VDC |
| Operating Interface | Industrial HMI Terminal |
| Mounting Type | Panel Mount |
| Display Color | Monochrome |
| Dimensions | 266 × 106 × 167 mm |
| Weight | 1.2 kg |
Applications
• Small Machine Control Systems – Used for basic operator interaction such as start/stop control, status monitoring, and parameter adjustment.
• Packaging Equipment – Provides simple interface for monitoring machine states and fault conditions in packaging lines.
• Manufacturing Equipment – Suitable for individual machines requiring local HMI control without complex visualization needs.
• Process Monitoring Units – Used in small-scale process systems for displaying key variables such as temperature or pressure.
• Water and Utility Systems – Applied in pump stations and basic infrastructure monitoring systems.
• Legacy PLC Integration – Commonly used in existing DH-485-based Allen-Bradley control systems for maintenance and replacement projects.
Advantages
• Compact Industrial Design – Small footprint makes it ideal for control cabinets with limited installation space.
• Stable Keypad Operation – Physical keypad ensures reliable input in harsh environments such as dust, vibration, or moisture exposure.
• Low Power Consumption – Operates on 24 VDC, suitable for standard industrial control power systems.
• Reliable Communication – Supports RS-232 (DH-485) for stable integration with Allen-Bradley PLC networks.
• Simple and Stable Display – Monochrome screen provides clear visibility for text-based monitoring and alarms.
• Cost-Effective Solution – Ideal for applications where basic HMI functionality is sufficient without unnecessary complexity.
• Easy System Maintenance – Widely used architecture simplifies troubleshooting and replacement in legacy systems.
