Description
Product Introduction & Engineering Value
The 2711-K5A1 is a legacy PanelView 550 terminal built for simple operator interaction in older Allen-Bradley systems. It uses a monochrome display and keypad interface, which makes it practical where screen clarity and tactile input matter more than graphics density.
For retrofit and replacement work, this unit is valuable because it fits the installed base of older Remote I/O and serial-connected machines. It keeps the original operator workflow intact, which saves time when the real goal is getting a line back up, not redesigning the interface.
Technical Specifications
| Parameter | Value |
|---|---|
| Catalog number | 2711-K5A1 |
| Product family | PanelView 550 |
| Display type | Monochrome LCD |
| Display size | 5.5 in |
| Resolution | 256 x 128 |
| Input method | Keypad |
| Communication | Remote I/O, RS-232 printer port |
| Power input | 100–240 V AC |
| Frequency | 50/60 Hz |
| Application memory | 170 KB runtime |
| Backlight | Replaceable internal backlight, 2711-NL1 |
| Mounting | Panel mount |
| Software family | PanelBuilder 32 |
Field Application & Trench Experience
A maintenance team at a legacy process skid had a dead operator panel that still handled start/stop, alarm ack, and a few recipe prompts. The 2711-K5A1 was the right replacement because it matched the old workflow and the existing Remote I/O environment. The swap was fast, but only after the team confirmed the cable set and application version were still compatible.
This terminal is a common fit on older batching panels, utility equipment, and compact machine controls where a simple keypad HMI is still the most efficient option.
Transparency SOP: QA & Testing
- Visual inspection for housing cracks, scratched lens, keypad wear, and connector damage.
- Power-up test to verify display, keypad response, and backlight condition.
- Communication check on Remote I/O and RS-232 where the application requires it.
- Memory and application-load verification using a known-good image or test file.
- Extended functional run to catch intermittent issues before shipment.
2711-K5A1
2711-K5A1
Veteran’s Tech Trap Guide
⚠️ Don’t buy it thinking it is a touchscreen terminal. The 2711-K5A1 is a keypad-based PanelView 550, and that matters when operators are used to touch navigation.
⚠️ Check the communication path before replacement. Remote I/O and RS-232 are not interchangeable with newer Ethernet-based HMI expectations.
PRO TIP: Verify the backlight condition and the exact firmware/application fit. These old terminals can still boot while hiding aging display problems or compatibility issues.
Dynamic FAQ
Q1: Is the 2711-K5A1 a direct replacement for my existing PanelView 550?
A: Yes, if your original terminal is the same catalog number and the communication/application setup matches.
Q2: What kind of display does it use?
A: A 5.5-inch monochrome LCD with 256 x 128 resolution.
Q3: What communication ports does it support?
A: Remote I/O and an RS-232 printer port.
Q4: What power does it require?
A: 100–240 V AC, 50/60 Hz.
Q5: Is this sold as new surplus or refurbished stock?
A: Either is common. New surplus means unused OEM inventory, while refurbished means tested and restored for reuse.
Q6: Does it carry warranty coverage?
A: Warranty depends on the seller, but reputable industrial suppliers usually provide coverage for both new surplus and refurbished units.
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