2711-K5A5 | Allen-Bradley | PanelView 550 Standard Operator Terminal

Product Overview

The Allen-Bradley 2711-K5A5 functions as a rugged, compact human-machine interface (HMI) within the PanelView 550 series. It enables precise operator interaction with PLC systems through a durable tactile keypad and a high-contrast monochrome transflective LCD. This unit specifically supports the RS-232 (DH-485) communication protocol, facilitating reliable data exchange in legacy industrial environments. We provide this terminal as 100% Brand New and Original, ensuring that you receive a factory-sealed unit with full operational life, despite its official "Obsolete" status.

Technical Specifications

Engineering Advantages

• Exceptional Environmental Visibility: The transflective LCD technology utilizes both internal LED backlighting and external ambient light. This ensures that the screen remains readable even in high-glare plant floor environments where standard screens wash out.

• Rugged Tactile Feedback: The stainless-steel dome keypad (F1-F10) provides positive tactile feedback for operators wearing heavy gloves. This mechanical input method resists the oils and contaminants that often degrade modern capacitive touchscreens.

• Robust AC Power Design: The 2711-K5A5 handles a wide input range of 85–264V AC. This internal power supply filters line noise and accommodates voltage fluctuations common in heavy industrial facilities.

• Long-Term Hardware Stability: While the industry shifts to software-heavy panels, the 2711-K5A5 utilizes efficient firmware that boots instantly. The 100,000-hour LED backlight life ensures over a decade of continuous operation without maintenance.

FAQs

• Q: Which communication cable do I need for this terminal?

  A: The 2711-K5A5 requires the 2711-NC13 or a similar RS-232 cable for DH-485 networking. Always verify the pinout if you are connecting directly to an SLC 500 or MicroLogix processor to prevent signal mismatch.

• Q: Can this unit replace a 24V DC PanelView 550?

  A: No. The 2711-K5A5 requires 120V AC power. If your existing terminal is a DC-powered model (e.g., 2711-K5A1), you must modify the cabinet wiring or source the correct DC variant to avoid damaging the hardware.

• Q: Does this HMI support modern EtherNet/IP?

  A: No. This model communicates exclusively via RS-232 using the DH-485 protocol. To integrate this terminal into an Ethernet network, you must use a protocol converter such as the 1761-NET-ENI.

• Q: What is the significance of the "IP65" rating for this model?

  A: When properly installed with the provided mounting gasket, the 2711-K5A5 achieves an IP65/NEMA 4X rating. This means the front panel resists low-pressure water jets and protects internal electronics from heavy dust, making it suitable for wash-down zones.