Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 2711-K5A5X |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | PanelView 550 Monochrome Keypad Operator Interface Terminal |
| Display Type | Monochrome blue mode LCD with LED backlight |
| Display Area (W × H) | 120 × 60 mm (4.75 × 2.38 in.) |
| Resolution | 256 × 128 pixels |
| Backlight Life | 100,000 hours (LED backlight) |
| Operator Input | Keypad – 10 function keys (F1–F10), navigation, numeric keys |
| Keypad Construction | Stainless-steel domed membrane |
| Keypad Actuation Rating | 1 million presses |
| Application Memory | 170 KB application runtime; 240 KB nonvolatile RAM |
| Memory Card Support | ATA memory card |
| Communication Port | RS-232 (DH-485) serial |
| Programming Software | PanelBuilder32 (PC-based) |
| Input Voltage (AC) | 85–264V AC, 47–63 Hz |
| Power Consumption (AC) | 45 VA maximum |
| Real-Time Clock | Battery-backed, field-replaceable battery |
| Dimensions (H × W × D) | 167 × 266 × 106 mm (6.57 × 10.47 × 4.17 in.) |
| Enclosure Rating | NEMA Type 12, 13, 4X (indoor); IEC IP54, IP65 |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Storage Temperature | –20 to 70 °C (–4 to 158 °F) |
| Operating Shock / Vibration | 15 g operating / 30 g non-operating; 2 g at 10–500 Hz |
| Certifications | UL508, UL1604 Class I Div 2 Groups A,B,C,D T4, CSA 22.2 No. 142 & No. 213, EN61131-2, CE |
| Weight | 1.2 kg (2.7 lb) |
| Country of Origin | United States |
Main Features and Advantages
Display technology and operator ergonomics form the foundation of the Allen-Bradley 2711-K5A5X value proposition. The 5.5-inch monochrome blue mode LCD delivers a 256 × 128 pixel resolution across a 120 × 60 mm viewing area, providing sharp text rendering for alarm messages, live process values, recipe selections, and animated graphics objects such as analog gauges and bar graphs. The LED backlight is rated for 100,000 hours of continuous operation — roughly 11 years of round-the-clock service — ensuring dependable readability across the terminal’s service life without the maintenance burden associated with fluorescent backlight replacements.
Input flexibility distinguishes the 2711-K5A5X keypad variant from its touch-screen sibling. The stainless-steel domed membrane keypad provides tactile feedback rated for one million presses per key, combining ten function keys (F1–F10) that can be assigned context-sensitive actions in the application design with dedicated navigation, numeric, and control keys. This layout is particularly well-suited to environments where operators wear gloves, where repeatable data entry accuracy is critical, or where the EMI-immune characteristics of a physical keypad outperform resistive touch surfaces — conditions common in washdown areas, outdoor panels, and electrically noisy production halls.
Connectivity and integration capability are equally strong. The 2711-K5A5X communicates natively over RS-232 (DH-485), providing direct connection to SLC 500 and MicroLogix controllers without protocol gateways, and supports data rates from 1200 to 19,200 Kbps on the auxiliary RS-232 printer port for hard-copy alarm and event logging. Application development is carried out through PanelBuilder32 software, which offers a mature object library, screen security, universal language support, and advanced alarm handling — allowing a single 2711-K5A5X to serve multilingual operators and multi-plant deployment strategies without redesign. ATA memory card support enables application backup, firmware transfer, and field-level configuration distribution across identical machine fleets.
Environmental robustness and compliance further reinforce the module’s appeal. The Bently-precision engineering applied here translates into NEMA 4X indoor, NEMA 12, and NEMA 13 enclosure ratings with IEC IP54/IP65 protection, sealing out dust, oil mist, coolant splash, and washdown water in demanding production areas. Operating temperature tolerance of 0 to 55 °C, vibration resistance of 2 g at 10–500 Hz, and operating shock rating of 15 g confirm suitability for vibrating machinery and mobile equipment. Certification to UL508, UL1604 Class I Division 2 Groups A, B, C, D T4, and CSA 22.2 No. 213 permits installation in hazardous-location environments such as fuel handling, petrochemical processing, and dust-laden grain facilities — a certification breadth that many compact HMIs cannot match. For facilities running legacy PanelView Standard fleets, the consistent PanelBuilder32 development environment, shared accessory cables, and interchangeable mounting dimensions across the family minimize engineering effort and spare-parts inventory whenever the Allen-Bradley 2711-K5A5X** is deployed as a direct replacement.
