Purchase now the 2080-LC50-48AWB, a high-density flagship controller from the Allen-Bradley Micro850 family. Designed for large-scale standalone machines and distributed control systems, this 48-point PLC provides the perfect balance of high I/O count and advanced Ethernet connectivity for modern industrial automation.
What Is the 2080-LC50-48AWB?
The 2080-LC50-48AWB is a programmable logic controller (PLC) engineered to handle complex automation tasks that require a significant number of AC inputs. It features 28 digital inputs rated for 120V AC and 20 electromechanical relay outputs. As part of the Micro850 series, it is «Connected Enterprise» ready, featuring a built-in 10/100 Base-T Ethernet port for seamless integration into factory networks via EtherNet/IP. Its architecture is highly expandable; in addition to the on-board I/O, it supports up to five 2080-series plug-in modules and up to four 2085-series expansion I/O modules. This allows the 2080-LC50-48AWB to scale up to 132 I/O points, making it one of the most versatile micro-controllers in the Rockwell Automation catalog. It is primarily used in building automation, large HVAC systems, and industrial skids where 120V AC signaling is the standard.
Key Technical Specifications
- Digital Inputs: 28 (120V AC)
- Digital Outputs: 20 (Relay, 2A per channel)
- Total On-board I/O: 48 Points
- Communication: Integrated Ethernet, USB 2.0 (Programming), RS232/RS485 Serial
- Expansion Capability: 5 Plug-in slots, 4 Expansion I/O modules
- Power Supply: 120/240V AC (Internal)
- Programming: Connected Components Workbench (CCW)
- Real-Time Clock: Embedded
Architecture and Connectivity
The architecture of the 2080-LC50-48AWB is optimized for high-density control panels. The integrated Ethernet port supports Modbus TCP and EtherNet/IP, allowing the PLC to communicate with PanelView 800 HMIs, PowerFlex drives, and other Logix controllers. By utilizing 120V AC inputs, it eliminates the need for interposing relays when interfacing with legacy plant hardware. The five plug-in slots on the front of the unit allow for the addition of specialized functionality, such as RTD/Thermocouple inputs or isolated serial ports, without increasing the DIN rail footprint. This modularity ensures that the controller can be «right-sized» for almost any process application.
Installation Advice
When installing the 2080-LC50-48AWB, ensure that high-voltage AC input wiring is routed away from the low-voltage Ethernet and serial communication cables to prevent electromagnetic interference. Since this unit features an internal AC power supply, verify that the incoming power is fused according to the manufacturer’s specifications. For the relay outputs, always use external surge suppression (RC snubbers) when switching inductive AC loads like motor starters to prevent premature contact wear and electrical noise spikes that could affect the processor logic.
Frequently Asked Questions
Q: Can the 120V AC inputs be used for high-speed counting?
A: No, the 120V AC inputs are designed for standard discrete logic and have a typical filter time of 10ms. For high-speed counter (HSC) applications, you must use a 24V DC input model.
Q: What is the maximum number of expansion modules supported?
A: The Micro850 48-point models like the 2080-LC50-48AWB support up to four 2085-series expansion I/O modules, which are connected to the right side of the controller.
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