Product Overview

The Allen-Bradley 2711-K5A2 is a rugged and reliable operator interface from the PanelView 550 family. It features a 5.5-inch monochrome blue-mode display and a tactile keypad for industrial data entry and machine control. Utilizing the DH-485 communication protocol, it is the standard interface for legacy systems controlled by SLC 500 and MicroLogix processors.

At Xiongba Automation, we specialize in "Rescue Mission" hardware. We know that if your 2711-K5A2 fails, your entire machine might be blind. We provide Verified Legacy Hardware that has undergone a rigorous aesthetic and functional restoration process, ensuring it performs like a new unit in your control panel.

Technical Specifications:

• Input Type: Keypad (Stainless-steel domed keys).

• Display: 5.5-inch Monochrome Blue-mode LCD.

• Communication: DH-485 Port.

• Input Voltage: 85-264V AC.

• Internal Memory: 170 KB application runtime memory.

Verification & Risk Control

HMI hardware requires a different audit than CPU modules. Xiongba Automation implements this 5-step visual and functional check for the 2711-K5A2:

1. Keypad Tactile Test: We manually test every single function key and numeric button. We ensure there are no "stuck" keys or membrane cracks that could lead to moisture ingress.

2. Display Brightness & Contrast Audit: We check the LCD for "dead pixels" or excessive dimming. If the backlight is nearing its end of life, the unit is rejected.

3. DH-485 Port Integrity: We inspect the communication pins for corrosion. A clean port is essential for the high-sensitivity DH-485 signal.

4. 12-Month Hardware Warranty: 1-year B2B warranty is standard. Note: This covers the display and internal electronics. It does not cover physical damage to the keypad membrane or screen caused by sharp objects or chemical cleaners.

5. Secure "Air-Cushion" Packaging: HMI screens are fragile. We use multi-layered foam and reinforced boxes to ensure the 2711-K5A2 survives international transit without a scratch.

Project Lifecycle Support

1. Maintenance Stage (MRO): As the PanelView 550 is obsolete, finding a clean unit is difficult. We maintain a stock of "Grade-A" condition 2711-K5A2 units to help you avoid a total HMI system redesign.

2. Procurement Stage (Real Order):

   • Share Your Target Price: Prices for obsolete HMIs vary wildly. Share your budget, and we will find the best condition-to-price match for you.

   • Screen-On Video Proof: We can provide a Live Video Power-On Test, showing the startup screen and menu navigation to prove the LCD and keys are 100% functional.

RFQ Checklist 

1. Part number: 2711-K5A2

2. Input Type: Keypad (Confirmed? Yes / No)

3. Communication: DH-485 (Confirmed? Yes / No)

4. Quantity: ___

5. Target Price: ___ (Recommended for legacy HMI)

6. Photo of old unit: Crucial for verifying the physical condition and terminal layout.

FAQ

Q: Can I use 2711-K5A2 to replace a 2711-T5A2? A: No. The "K" is Keypad and the "T" is Touchscreen. While the program can sometimes be converted in PanelBuilder32 software, the physical cutout in your panel door will be different. Stick to the exact part number.

Q: Does it come with the programming software? A: No. Xiongba Automation supplies the Hardware Only. You will need PanelBuilder32 software and the correct 1747-PIC or USB-to-DH485 adapter to download your program.

Q: Is the backlight replaceable? A: Yes, the backlight bulbs (2711-NL1) are replaceable. However, we sell the 2711-K5A2 with a fully functional, bright backlight already installed.

Related Models

2711-T10C8