Introduction

The Allen-Bradley 2080-L50E-24QBB Micro850 Programmable Controller is part of Rockwell Automation's Micro800 family of compact programmable controllers. It is designed for machine builders and industrial users who need integrated digital I/O, Ethernet connectivity, and flexible control functions in a compact PLC platform.

This model features 14 digital inputs compatible with 24V DC or 24V AC signals and 10 sourcing transistor outputs rated for 24V DC applications. Its output architecture makes it suitable for control systems using compatible DC loads, including selected solenoids, indicators, and interface circuits.

For communication and system integration, the controller provides embedded Ethernet, RS-232, and RS-485 interfaces, together with a USB programming port. It also supports high-speed counter and pulse-train output functions, offering additional flexibility for applications involving pulse signals and position-related control.

The Micro850 platform supports compatible plug-in modules and Micro800 expansion I/O, allowing engineers to adapt the system to different machine requirements. Programming and configuration are handled through Connected Components Workbench, making the 2080-L50E-24QBB a practical choice for compact automation systems, equipment upgrades, and OEM machine-control projects.

Technical Specifications

Parameter	Specification
Brand	Allen-Bradley
Model	2080-L50E-24QBB
Product Series	Micro850
Product Type	Programmable Controller
Total Embedded I/O	24 points
Digital Inputs	14 points
Input Signal Type	24V DC / 24V AC
Digital Outputs	10 points
Output Type	24V DC sourcing transistor
Controller Power Supply	24V DC
Ethernet	1 embedded Ethernet port
Serial Communication	RS-232 / RS-485
Programming Interface	USB
Embedded High-Speed Counter Support	Up to 4 channels
Pulse-Train Output Support	2 functions
Plug-in Slots	3
Programming Software	Connected Components Workbench (CCW)
Dimensions	158 × 80 × 90 mm
Weight	0.423 kg / 0.93 lb

Recommended Related Models

The following controllers and accessories belong to the Micro800 product family. Their I/O configurations and output technologies differ, so check the electrical requirements before selecting a model.

Model	Product Description
2080-L50E-24QWB	Micro850 24-Point Controller with Relay Outputs
2080-L50E-24QVB	Micro850 24-Point Controller with 24V DC Sinking Outputs
2080-L50E-24AWB	Micro850 24-Point Controller with 120V AC Inputs
2080-L50E-48QBB	Micro850 48-Point Controller with Sourcing Outputs
2080-L50E-48QVB	Micro850 48-Point Controller with Sinking Outputs
2080-IF4	Micro800 Analog Input Plug-in Module
2080-OF2	Micro800 Analog Output Plug-in Module
2080-REMLCD	Micro800 Remote LCD Display

Popular Related Models

2080-L30E-24QBB – Micro830 Programmable Controller with Sourcing Outputs
2080-L30E-24QVB – Micro830 Programmable Controller with Sinking Outputs
2080-L50E-24QBB – Micro850 24-Point Programmable Controller
2080-L50E-24QWB – Micro850 Controller with Relay Outputs
2080-L50E-48QBB – Micro850 48-Point Programmable Controller
2080-L50E-48QVB – Micro850 Controller with Sinking Outputs
2080-IF4 – Micro800 Analog Input Plug-in Module
2080-OF2 – Micro800 Analog Output Plug-in Module

Applications

The Allen-Bradley 2080-L50E-24QBB Micro850 Programmable Controller is a compact 24-point PLC designed for machine automation and industrial control applications. It combines 14 digital inputs with 10 sourcing transistor outputs, providing an integrated solution for equipment that uses 24V DC control signals.

Typical applications include:

Packaging machinery: Coordinating sensors, actuators, indexing mechanisms, and machine sequences.
Conveyor systems: Controlling motors through external drive equipment, detecting product positions, and managing transfer operations.
Assembly equipment: Processing input signals and controlling solenoid valves, relays, and other 24V DC devices.
Pump and fan control: Managing operating sequences, status signals, and equipment interlocks.
OEM machinery: Providing programmable control for compact machines with a moderate number of digital I/O points.
Automated production lines: Integrating local machine control with operator interfaces and other compatible automation devices.

Advantages

1. Integrated 24-Point I/O

The controller provides 14 digital inputs and 10 digital outputs, reducing the need for separate basic I/O modules in compact control systems.

2. 24V DC Sourcing Outputs

Its 10 transistor outputs provide 24V DC sourcing operation. This configuration is suitable for compatible DC loads and control circuits that require sourcing outputs.

3. Flexible Input Compatibility

The digital inputs support 24V DC and 24V AC signals, allowing the controller to accommodate different field-device arrangements within its specified electrical ratings.

4. Built-In Ethernet Communication

The embedded Ethernet port supports communication with compatible programming software, operator interfaces, and other networked automation equipment.

5. Serial Communication Support

Integrated RS-232 and RS-485 interfaces provide additional options for connecting serial devices and industrial equipment.

6. High-Speed Control Capabilities

The 24QBB configuration supports up to four embedded high-speed counter channels and two pulse-train output functions, making it useful for selected counting and motion-related applications.

7. Expandable Micro850 Platform

Three plug-in slots allow supported accessories and functional modules to be installed. Compatible Micro800 expansion I/O modules can also extend the controller's capabilities.

8. Convenient Engineering Environment

Connected Components Workbench (CCW) provides a unified environment for controller programming, configuration, and troubleshooting.

Technical FAQs

Q1: How many I/O points does the 2080-L50E-24QBB provide?

It provides 24 embedded I/O points, consisting of 14 digital inputs and 10 digital outputs.

Q2: What input voltage does this Micro850 controller support?

Its embedded digital inputs support 24V DC and 24V AC signals. The input wiring and signal configuration should follow the controller's installation requirements.

Q3: Are the outputs relay or transistor type?

The 2080-L50E-24QBB uses 24V DC sourcing transistor outputs, not relay outputs. This distinction is important when selecting field devices or replacing an existing PLC.

Q4: What does a sourcing output mean?

A sourcing output supplies positive voltage to a connected load when activated. The load is typically connected between the output terminal and the DC common return, following the manufacturer's wiring diagram.

Q5: What power supply is required?

The controller requires a nominal 24V DC power supply. The supply must meet the specified voltage range and power requirements of the complete controller configuration.

Q6: Does the controller support high-speed counters?

Yes. The 24QBB configuration supports up to four embedded high-speed counter channels. The supported counting modes and input wiring depend on the application and controller configuration.

Q7: Can the 2080-L50E-24QBB generate pulse-train outputs?

Yes. It supports two pulse-train output functions. For applications requiring precise pulse control, verify the required output mode, connected device specifications, and firmware compatibility.

Q8: Which communication interfaces are available?

The controller includes an Ethernet port, RS-232, RS-485, and a USB programming port. These interfaces support different programming and equipment-communication requirements.

Q9: Which software is used to configure the controller?

Connected Components Workbench (CCW) is used to develop and maintain Micro850 applications. The installed software and controller firmware should be compatible with the required functions.

Q10: Can this controller directly replace a 2080-L50E-24QWB?

Not necessarily. The 24QWB model uses relay outputs, while the 24QBB uses 24V DC sourcing transistor outputs. Before replacement, check the field wiring, load requirements, output behavior, and application program.

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