Allen-Bradley Micro850 Controllers – 2080-LC50-24QWB

Name: Allen-Bradley Micro850 Controllers – 2080-LC50-24QWB
Brand: Allen-Bradley

Model: 2080-LC50-24QWB

Brand Allen-Bradley

Series 2080-LC50-24QWB

Model 2080-LC50-24QWB

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Technical Dossier

Product Details And Specifications

Allen-Bradley Micro850 Series Technical Notes

The Evolution of Micro850 Architecture

The Micro850 platform was introduced by Rockwell Automation as a successor to the MicroLogix 1100 and 1400 lines, addressing demand for embedded Ethernet connectivity and modular expansion without requiring a full CompactLogix chassis. Early Micro850 units (circa 2012–2015) shipped with firmware 1.x and supported a limited plug-in module set. Firmware 3.x and later revisions introduced EtherNet/IP adapter functionality, expanded function block library support under IEC 61131-3, and compatibility with the CCW (Connected Components Workbench) programming environment.

The series uses a non-rack-based architecture: plug-in modules insert directly into the controller body (up to 4 slots), while expansion I/O modules connect via a dedicated side-bus connector. This architecture creates compatibility constraints — plug-in modules from the 2080-MEMBAK-RTC or 2080-SERIALISOL families are not interchangeable with Micro820 plug-ins. Engineers migrating from MicroLogix 1400 must account for differences in instruction set coverage, particularly for PID and HSC (High-Speed Counter) configurations. As of 2024, the Micro850 series is in a mature/sustained phase; Rockwell Automation continues to ship hardware but has shifted primary development investment toward the Micro870 and CompactLogix 5380 platforms. Long-term maintenance support for Micro850 installations remains critical for facilities with 10–20 year operational horizons.

Micro850 Full Catalog & Functionalities (SKU List)

Controllers (Base Units)

2080-LC50-24QWB: 24-pt DC in/out, onboard Ethernet, USB, 4 plug-in slots, 24VDC supply
2080-LC50-24QBB: 24-pt DC in/transistor out, no Ethernet, 4 plug-in slots, 24VDC
2080-LC50-24AWB: 24-pt AC in/relay out, onboard Ethernet, 4 plug-in slots, 120/240VAC
2080-LC50-48QWB: 48-pt DC in/relay out, onboard Ethernet, 4 plug-in slots, 24VDC
2080-LC50-48QBB: 48-pt DC in/transistor out, onboard Ethernet, 4 plug-in slots, 24VDC
2080-LC50-48AWB: 48-pt AC in/relay out, onboard Ethernet, 4 plug-in slots, 120/240VAC

Plug-In Modules (2080-Series)

2080-IQ4: 4-pt 24VDC digital input plug-in module
2080-OB4: 4-pt 24VDC transistor digital output plug-in module
2080-OW4I: 4-pt isolated relay output plug-in module
2080-IF2: 2-ch analog input plug-in, 0–10V / 4–20mA selectable
2080-OF2: 2-ch analog output plug-in, 0–10V / 4–20mA selectable
2080-MEMBAK-RTC: Memory backup and real-time clock plug-in module
2080-SERIALISOL: Isolated RS-232/RS-485 serial communications plug-in
2080-IQ4OB4: 4-pt DI / 4-pt DO combo plug-in module, 24VDC

Expansion I/O Modules (2085-Series)

2085-IQ16: 16-pt 24VDC digital input expansion module
2085-OW16: 16-pt relay output expansion module
2085-IF4: 4-ch analog input expansion, 0–10V / 4–20mA
2085-OF4: 4-ch analog output expansion, 0–10V / 4–20mA
2085-IQ32T: 32-pt 24VDC digital input expansion, terminal block

Quality Control for the Micro850 Range

Micro850 controllers and associated plug-in modules undergo a structured inspection protocol at DriveKNMS prior to shipment. Base controller units are powered on and connected via USB to CCW (Connected Components Workbench) to verify firmware version readability, I/O point continuity, and Ethernet port link negotiation. Plug-in modules are seated into a test controller chassis and verified for correct enumeration in the CCW I/O tree. Analog plug-ins (2080-IF2, 2080-OF2) are tested against calibrated signal sources to confirm channel accuracy within published tolerance bands (±0.5% full scale). Relay output modules are cycled under resistive load to verify contact integrity. Units exhibiting firmware corruption, backplane communication faults, or physical connector damage are quarantined and excluded from inventory. Each shipped unit is accompanied by a test record and, where available, the original Rockwell Automation factory label with date code.

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