Allen-Bradley 2711-B5A9L1 PanelView 550 HMI

The Allen-Bradley 2711-B5A9L1, also cataloged as the 2711-B5A9L1 PanelView Standard Operator Interface, operates as a dedicated hardware component for process visualization and operator parameter input within DH-485 network architectures. Powered by an internal 24 VDC power power supply, the unit provides direct physical/electrical execution through its 5.3-inch monochrome display (256 x 128 pixels), dual keypad and touch input matrix, and RS-232 communication interfaces for real-time controller interaction and local printer output.

Suffix Breakdown & Model Matrix

Hardware Specifications

Profinet / EtherNet/IP Deterministic Networks & Firmware Flash Compatibility

The operator interface communicates across industrial network structures, processing high-speed serial bitstream exchanges with host PLC-5, SLC 500, or MicroLogix controllers. Onboard logic circuits maintain strict firmware flash compatibility with PanelBuilder32 software suites, assuring deterministic register updates across mapped I/O bits and integer files. High dielectric isolation across the 24 VDC power input terminals shields internal microcontroller logic from ground potential shifts and high-frequency noise transients present on backplane and field network lines.

Frequently Asked Questions

Q: What are the input power requirements for the 2711-B5A9L1 operator interface?

A: The terminal operates on 24 VDC nominal field power with an allowable operating range of 18 to 32 VDC.

Q: Can both the DH-485 serial port and the printer port be used simultaneously?

A: Yes, the primary RS-232 port handles real-time controller tag exchange using DH-485 protocol, while the secondary RS-232 printer port operates independently for asynchronous alarm and report printing.

Q: What input options are available on the 2711-B5A9L1 PanelView 550 terminal?

A: The module supports dual operator input via physical tactile function keys (F1 through F10) and an analog resistive touch screen area.

Field Installation Guidelines

1. Cut the cabinet panel cutout to match standard PanelView 550 mounting dimensions, ensuring the panel face is clean and rigid.
2. Fit the terminal into the cutout and tighten the perimeter mounting clips evenly to ensure a NEMA-rated enclosure seal.
3. Wire the external 24 VDC power supply to the terminal power block, verifying correct polarity before energizing the unit.
4. Route the RS-232 communication cable separately from high-voltage AC lines and variable frequency drive motor leads to prevent data corruption.
5. Secure the protective earth (PE) ground lead directly to the terminal chassis grounding stud using a low-impedance copper strap.