Description
The 2711-K5A20 is a network-integrated human-machine interface within the Allen-Bradley PanelView Standard 550 operator terminal family. This visualization station establishes high-speed, deterministic communication and real-time plant-floor monitoring by connecting directly to industrial automation controllers. Optimized for enterprise-level control networks, it is widely implemented in wastewater treatment facilities, food production lines, and continuous manufacturing plants. The hardware processes complex graphical representations and alarm tables locally, which significantly decreases processing overhead on the host programmable logic controller and minimizes system diagnostic downtime.
Industrial Networking and Memory Architecture
The hardware platform integrates a dual-channel communication subsystem featuring native network connectivity and a dedicated peripheral interface. The primary communication port utilizes an onboard industrial Ethernet (EtherNet/IP) interface, ensuring noise-immune, low-latency register mapping and peer-to-peer data transfers across standard TCP/IP network structures. An auxiliary RS-232 serial configuration functions strictly as an isolated printer port, allowing immediate, hardcopy logging of system fault banners without introducing traffic onto the primary control network. Local memory architecture consists of 170 KB of volatile RAM for application runtime and 240 KB of non-volatile storage, which can be expanded via a built-in PCMCIA ATA flash card slot to support large localization databases and historical trend storage.
Features
- Rugged membrane keypad interface with 10 assignable function keys (F1-F10)
- Monochrome transflective LCD blue mode display with long-life LED backlight
- Integrated EtherNet/IP connectivity for high-speed controller communication
- Field-serviceable backlight and battery-backed real-time clock
- NEMA 4X/12/13 and IP65 environmental protection for harsh industrial conditions
Applications
This operator terminal is designed for use in diverse industrial environments, including:
- Wastewater treatment and water management systems
- Food and beverage processing lines
- Continuous manufacturing and assembly automation
- General machine control and diagnostic monitoring
Technical Specifications
| Model |
2711-K5A20 |
| Series |
PanelView 550 Standard |
| Display Size |
5.5 inch |
| Resolution |
256 x 128 Pixels |
| Backlight Life |
100,000 hours |
| RAM |
170 KB |
| Non-volatile Memory |
240 KB |
| Communication |
Ethernet (EtherNet/IP), RS-232 (Printer) |
| Input Voltage |
85 to 264 VAC |
| Frequency |
47 to 63 Hz |
| Protection Rating |
NEMA 4X, 12, 13; IP65 |
Installation Guidelines
- Ensure the panel cutout is clean and free of debris before mounting the terminal.
- Use the provided mounting clips to secure the unit to the enclosure, ensuring an even seal against the gasket to maintain NEMA/IP ratings.
- Verify that the power supply is within the 85-264 VAC range before applying power.
- Maintain proper clearance around the unit for adequate ventilation and access to the PCMCIA slot.
- Route communication cables away from high-voltage power lines to prevent EMI interference.
- Always power down the device before inserting or removing PCMCIA flash cards.
FAQ
Is the backlight on this unit field-replaceable?
Yes, the LED backlight is field-serviceable using the 2711-NL1 replacement part.
What is the primary function of the RS-232 port?
The RS-232 port is configured strictly as a printer port for hardcopy logging of system events and faults.
Can the memory be expanded?
Yes, the unit includes a PCMCIA ATA flash card slot for expanding storage for localization databases and historical trends.
