Get now the 2080-LC50-48QWB, a robust and highly expandable 48-point controller from the Allen-Bradley Micro850 series. Featuring versatile relay outputs and integrated Ethernet, this PLC is designed for heavy-duty industrial applications where high current switching and networked intelligence are required.
What Is the 2080-LC50-48QWB?
The 2080-LC50-48QWB is a high-density programmable logic controller that provides 28 digital inputs (24V DC) and 20 electromechanical relay outputs. It is the ideal solution for machine builders who require the flexibility to switch both AC and DC loads directly from the PLC without the cost of interposing relays. As part of the Micro850 family, it features an embedded 10/100 Ethernet port for remote monitoring, programming, and peer-to-peer communication. The architecture is designed for maximum scalability, supporting up to five 2080-series plug-in modules and four 2085-series expansion I/O modules. This allows the 2080-LC50-48QWB to grow with your application, supporting up to 132 I/O points total. With its built-in real-time clock and high-speed counter inputs, it is perfectly suited for water treatment, material handling, and complex process skids.
Key Technical Specifications
- Digital Inputs: 28 (24V DC Sinking/Sourcing)
- Relay Outputs: 20 (Electromechanical, 2A per channel)
- Total I/O: 48 Points
- High-Speed Inputs: 3 channels (up to 100 kHz)
- Communication: Integrated Ethernet, USB 2.0, RS232/RS485 Serial
- Expansion Slots: 5 Plug-in slots, 4 Expansion I/O slots
- Power Requirement: 24V DC
- Software: Connected Components Workbench (CCW)
System Expansion and Reliability
The 2080-LC50-48QWB architecture prioritizes system availability and ease of expansion. The relay outputs provide physical isolation between the logic and the field wiring, making the controller resilient against electrical transients. The integrated Ethernet port allows the PLC to communicate with PanelView 800 HMIs for local operator control and with FactoryTalk Optix for advanced data visualization. Its support for 2085 expansion modules allows for high-density analog and digital additions, ensuring the controller remains viable even as the automation project expands. The inclusion of a microSD slot for data logging and recipe storage makes it a powerful edge device for data-driven manufacturing.
Maintenance Tips
To ensure the longevity of the 2080-LC50-48QWB, monitor the mechanical life of the 20 relay outputs. Frequent switching of high-power inductive loads can cause contact degradation; always use external surge suppression like RC snubbers for AC and flyback diodes for DC loads. Periodically check the terminal connections for tightness, especially in environments subject to thermal expansion or vibration. If utilizing the high-speed inputs for flow meters or encoders, ensure that the signal cables are shielded and separated from the relay output power wires to prevent false counts due to electrical noise.
Frequently Asked Questions
Q: Can I use the 2080-LC50-48QWB as a Modbus Master?
A: Yes, the 2080-LC50-48QWB can be configured as either a Modbus RTU (via Serial) or Modbus TCP (via Ethernet) Master or Slave, providing excellent third-party connectivity.
Q: Does this model support PTO (Pulse Train Output) for motion?
A: No, because it uses relay outputs, it cannot perform high-speed pulse train tasks. For motion control requiring PTO, you should select a transistor output model like the 2080-LC50-48QBB.
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