2711-B5A5 | Allen-Bradley | PanelView 550 Standard Operator Terminal

Product Overview

The Allen-Bradley 2711-B5A5 functions as a high-performance Human-Machine Interface (HMI) within the legacy PanelView 550 series. This dual-input terminal features both a 5.5-inch touchscreen and a tactile 10-button keypad (F1–F10), allowing operators to interact with complex machinery in diverse industrial conditions. It utilizes a high-contrast monochrome LCD blue mode display for clear visualization of process data and alarms. Despite the manufacturer's discontinued status, we provide this unit as 100% Brand New and original factory stock, ensuring the longest possible service life for your existing DH-485 network infrastructure.

Technical Specifications

The 2711-B5A5 utilizes robust hardware parameters for consistent floor-level operation:

Engineering Advantages

• Hybrid Operator Interface: The combination of a 128-cell touchscreen and a mechanical keypad solves the "gloved hand" dilemma. Operators use the touchscreen for rapid menu navigation while relying on the tactile F1–F10 keys for critical, repetitive commands or when wearing heavy protective gear.

• Extended Optical Durability: The integrated LED backlight offers a 100,000-hour rated life. This significantly reduces maintenance cycles compared to older CCFL-backlit terminals, maintaining consistent brightness for over a decade of continuous use.

• Wide Voltage Range Compliance: The internal power supply accepts anywhere from 85V to 264V AC. This versatility protects the terminal against brownouts and voltage fluctuations common in heavy industrial grids, preventing unexpected HMI reboots.

• Legacy DH-485 Integration: The unit facilitates direct connection to SLC 500 or MicroLogix controllers via the RS-232 (DH-485) port. Using the 2711-NC13 communication cable, engineers can restore system-wide diagnostics without requiring expensive network upgrades or protocol converters.

FAQs

• Q: Can I replace a touch-only or keypad-only 550 model with the 2711-B5A5?

• A: Yes. The 2711-B5A5 offers both input methods. As long as your existing application supports the 5.5-inch monochrome resolution and utilizes DH-485 communication, this unit serves as a superior replacement.

• Q: Does this unit require a separate DC power supply?

• A: No. The 2711-B5A5 contains an internal AC-to-DC converter. It connects directly to standard 120V or 240V AC facility power via the terminal block.

• Q: How does the "Brand New" status benefit a discontinued HMI?

• A: Unlike refurbished units, a 100% Brand New 2711-B5A5 features a fresh touchscreen membrane and a factory-new LED backlight. This eliminates the "dimming" or "dead zones" found in used units, providing the reliability required for high-uptime production lines.

• Q: Is the communication port a standard RS-232 serial port?

• A: While the physical connector is a 9-pin RS-232, the protocol is DH-485. You must ensure your controller port is configured for DH-485 or use an appropriate AIC+ link coupler to establish a successful connection.