Allen-Bradley 2711-B5A3L2 PanelView 550 Operator Interface Terminal

Description

The Allen-Bradley 2711-B5A3L2 is a PanelView 550 operator interface terminal designed for robust human-machine interface (HMI) applications in demanding industrial environments. This unit facilitates real-time process monitoring, diagnostic tracking, and manual control by establishing reliable data links with programmable logic controllers. It serves as a compact, electronic replacement for traditional physical control panels, helping to optimize operator workflows and reduce system downtime in sectors such as automotive manufacturing, chemical processing, and water treatment.

Features

• Hybrid Input Interface: Combines an analog resistive touchscreen with a 10-key mechanical function keypad (F1-F10) for reliable operation in high-vibration environments.
• Display Specifications: Features a 5.5-inch monochrome blue-mode LCD with 256 x 128 pixel resolution and a long-life 100,000-hour LED backlight.
• Communication Connectivity: Equipped with an integrated DH-485 port for network synchronization and a dedicated RS-232 serial port for local printer logging.
• Memory and Storage: Includes 170 KB of application runtime memory and 240 KB of nonvolatile memory, with an ATA memory card slot for supplemental storage.
• Rugged Design: Rated for NEMA 12/13 and 4X (indoor) as well as IP54/IP65 environmental protection.

Applications

This operator terminal is suitable for integration into various industrial automation systems, including:

• Automotive assembly line control
• Chemical and food processing plant monitoring
• Water and wastewater treatment facility management
• General machine-level diagnostics and control

Technical Specifications

Installation Guidelines

• Mounting: Ensure the unit is mounted in a panel with adequate clearance for ventilation and cable routing. Follow the cutout dimensions provided in the user manual to maintain the NEMA/IP seal integrity.
• Grounding: Proper chassis grounding is essential to minimize EMI/RFI interference. Use the provided grounding studs to connect to a low-impedance earth ground.
• Wiring: Use shielded communication cables for DH-485 and RS-232 connections. Keep signal cables separated from high-voltage power lines to prevent signal noise.
• Handling: This device contains sensitive electronic components. Use standard ESD (Electrostatic Discharge) precautions during installation and maintenance.
• Power: Verify the 24 VDC supply voltage is within nominal limits before applying power. Always power down the unit before connecting or disconnecting communication cables.

FAQ

Is the 2711-B5A3L2 still in production?

No, this model is classified as discontinued/obsolete by the manufacturer. We provide these units as spare parts for legacy system maintenance.

Can I replace the backlight on this unit?

Yes, the backlight is field-replaceable using the 2711-NL1 replacement module.

Does this terminal support external memory?

Yes, the unit includes an integrated ATA memory card slot for additional storage and application backup.