Order now the 2080-LC20-20AWB, a versatile and networked 20-point controller from the Allen-Bradley Micro820 series. This PLC is the perfect choice for small standalone machines and remote automation projects that require 120V AC inputs and the connectivity power of integrated Ethernet.
What Is the 2080-LC20-20AWB?
The 2080-LC20-20AWB is a high-performance programmable logic controller specifically designed for «The Connected Enterprise.» It features 12 digital inputs rated for 120V AC and 7 electromechanical relay outputs. Additionally, it provides 1 analog output (0-10V), making it capable of handling basic process control tasks like modulating a VFD speed. A defining feature of the Micro820 architecture is the integrated 10/100 Base-T Ethernet port, which allows for remote programming, data logging via the microSD card slot, and peer-to-peer communication via EtherNet/IP. It also features a non-isolated serial port (RS232/RS485) for Modbus RTU communication. Its compact size and support for up to two plug-in modules make it an extremely flexible platform for industrial applications such as pump control, material handling, and remote telemetry units (RTUs).
Key Technical Specifications
- Digital Inputs: 12 (120V AC)
- Digital Outputs: 7 (Relay, 2A per channel)
- Analog I/O: 1 Analog Output (0-10V)
- Communication: Ethernet Port, RS232/RS485 Serial
- Storage: MicroSD card slot for data logs and recipes
- Expansion: Supports 2 Plug-in modules
- Power Supply: 24V DC Required
- Software: Connected Components Workbench (CCW)
System Integration and Connectivity
The 2080-LC20-20AWB is engineered for seamless integration. The embedded Ethernet port supports both Modbus TCP and EtherNet/IP, allowing the PLC to communicate directly with PanelView 800 HMIs or larger Logix controllers. Its ability to host plug-in modules allows for specialized functionality, such as adding a 2080-RTD2 module for temperature sensing or a 2080-SERIALISOL for isolated communication, all without increasing the controller’s footprint. This architecture is especially valuable in retrofit scenarios where 120V AC field devices are already installed, providing a modern, networked brain for existing equipment.
Maintenance Tips
For the 2080-LC20-20AWB, it is critical to monitor the health of the relay outputs, especially when switching inductive AC loads. Always use external surge suppression (RC snubbers) to prevent contact pitting and electrical noise. If utilizing the microSD card for data logging, ensure you use an industrial-grade card to prevent data corruption from frequent write cycles. Periodically verify the firmware version through CCW to ensure compatibility with the latest security patches and Add-On Profiles for your connected devices.
Frequently Asked Questions
Q: Does the 2080-LC20-20AWB have high-speed counters?
A: No, the 120V AC input circuitry is not designed for high-speed pulse detection. For HSC applications, you should select a 24V DC input model from the Micro800 range.
Q: Can the 2080-LC20-20AWB be powered by 120V AC?
A: No, while it accepts 120V AC signals as inputs, the controller itself requires a 24V DC power supply to operate.
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