Overview
The Allen-Bradley 2711-K3A2L1 is a PanelView 300 Standard Operator Terminal powered by an external 18-32V DC supply voltage and featuring a 3-inch monochrome display with embedded DH485 communication port. This visualization component, commonly called a Human Machine Interface (HMI), enables operators to control and monitor processes or machines in real-time through a centralized location, contributing to efficient and increased uptime.
Key Features
- Eight Function keys (F1 to F8) and keypad operator interface
- 3-inch monochrome LCD display with 128 x 64 pixel resolution and 100,000-hour LED backlight life
- DH485 communication port for network integration with PLC-5 and MicroLogix controllers
- RS-232 printer port and ATA Memory card support
- 170 KB runtime application memory with non-volatile backup
- UL, cUL/CSA and CE certifications; approved for Class I Division II hazardous locations
Technical Specifications
| Input Voltage | 18 to 32 Volts DC (24 Volts DC nominal) |
| Power Consumption | Maximum 10 Watts (0.42 amps at 24 Volts DC) |
| Display Size | 73 x 42 millimeters (2.87 x 1.67 inches) |
| Display Resolution | 128 x 64 pixels monochrome |
| Backlight Life | 100,000 hours LED backlight |
| Runtime Memory | 170 KB |
| Function Keys | Eight (8) customizable F1-F8 keys |
| Communication Port | DH-485 (RS-232) primary; RS-232 printer port |
| Physical Dimensions | 133 (H) x 112 (W) x 48 (D) mm; installation depth 35 mm (1.39 in.) |
| Weight | 284 g (10 oz.) |
| Certifications | UL, cUL/CSA, CE; Class I Division II approved |
| Series | Series B (PanelView Standard 300) |
Typical Applications
The 2711-K3A2L1 is used across industries including pulp and paper, automotive, water, wastewater, and petrochemical. It is typically installed on the factory floor to provide machine-level monitoring and interface, enabling convenient and low-risk operation.
Compatibility & Replacements
The 2711-K3A2L1 communicates with ControlLogix family PLCs through DH-485, RS-232 (DH-485), DeviceNet, and RS-232 (DF1) communication options. It is compatible with PLC-5 and MicroLogix controllers via 9-pin RS-232 port assembly for remote serial port access. Used in legacy systems, this operator terminal serves as a reliable upgrade or replacement in existing automation installations without requiring controller modifications.
