Product Overview
The Allen-Bradley 2711P-K4C3D is a compact operator interface terminal from the PanelView Plus 400 series, engineered for monitoring and controlling industrial machinery. This DC-powered unit features a 3.5-inch color display and keypad input, making it a practical choice for space-constrained control panels. As a discontinued model, the 2711P-K4C3D remains a reliable spare part for existing installations, and PLC Source PRO offers it for immediate replacement needs.
Technical Specifications
The 2711P-K4C3D provides a clear visual interface with a 3.5-inch TFT color LCD, a 320 x 240 resolution, and a viewing area of 71 x 53 mm. It operates on 24 VDC nominal power, with an input range of 18–30 VDC, and consumes a maximum of 25 W (1.0 A at 24 VDC). The unit includes a DH-485 communication port, 64 MB memory, and supports Series A through E revisions. Key specifications are listed below:
| Parameter |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
2711P-K4C3D |
| Product Line |
PanelView Plus 400 |
| Display Size |
3.5 inch |
| Display Color |
Color |
| Input Type |
Keypad |
| Communication |
DH-485 Port |
| Input Power |
DC |
| Memory |
64 MB |
| Series |
A, B, C, D, E |
| Lifecycle Status |
Discontinued/Obsolete |
Additional performance data includes a display luminance of 200 nits, a built-in clock with ±2 minutes/month accuracy, and a backup battery life of four years. The unit stores applications in external 512-MB Compact Flash and 10 MB nonvolatile memory, and it offers one USB port and one RS-232 serial port for connectivity. Operating temperature ranges from 0 to 55 °C at 5–95% humidity, with a maximum heat dissipation of 85 BTU/hour. The 2711P-K4C3D weighs approximately 0.562 kg (1.24 lb) and measures 152 x 185 x 90 mm (6.0 x 7.28 x 3.54 in).
Industry Applications
The 2711P-K4C3D is ideal for applications where a compact HMI is required to interface with PLCs or industrial controllers. Typical uses include:
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Machine control panels – Operators can view machine status and enter commands via the keypad, improving efficiency on production lines.
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Process monitoring – The color display shows real-time process values, alarms, and trends, enabling quick response to anomalies.
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Retrofit and replacement – As a direct replacement for existing PanelView Plus 400 units, the 2711P-K4C3D minimizes downtime in legacy systems.
Installation & Setup
Mount the 2711P-K4C3D in a panel cutout using the provided mounting clips, ensuring proper clearance for ventilation. Connect 24 VDC power to the designated terminals, observing correct polarity. For communication, use a DH-485 network cable to link the terminal to your PLC or controller. Configure the device using FactoryTalk View Studio software, transferring the application via USB, serial, or Compact Flash. Always verify the input voltage range (18–30 VDC) before powering up.
Maintenance & Reliability
To maintain reliable operation, periodically inspect the keypad and display for wear, and clean the screen with a soft, dry cloth. Replace the internal backup battery every four years to preserve the real-time clock. Ensure the ambient temperature stays within 0–55 °C and humidity below 95% to avoid overheating. Because the 2711P-K4C3D is discontinued, proactive spare part stocking is recommended to prevent extended downtime.
Selection Guide
Before purchasing the 2711P-K4C3D, confirm that your system uses DH-485 communication and requires a 3.5-inch keypad interface. Verify the series (A–E) matches your existing installation for compatibility. For a reliable source of this obsolete module, PLC Source PRO provides genuine Allen-Bradley parts with fast shipping to keep your operations running.