Description

The 2080‑LC20‑20QBBK is a compact programmable logic controller from Allen‑Bradley’s Micro820 series, part of the Micro800® controller family. Designed for small standalone machine control and remote automation applications, this 20‑point controller integrates a rich set of I/O and communication features into a nano‑sized footprint -12-8.

With 12 digital inputs (four configurable as analog), 8 digital outputs (7 DC FET plus 1 analog output), embedded EtherNet/IP and serial ports, and support for MicroSD cards, the 2080‑LC20‑20QBBK offers a cost‑effective solution for applications requiring flexible communications and I/O capabilities -3-7. The conformal‑coated version ensures reliable operation in humid or mildly corrosive environments -11.

⚠️ Discontinuation Notice: As of December 5, 2025, Rockwell Automation has discontinued the 2080‑LC20‑20QBBK. The recommended engineering replacement is the 2080‑L20E‑20QBBK -9.

 

Application Scenarios

Consider a small conveyor system in a food processing facility—a standalone transfer station with four photoelectric sensors, two limit switches, a variable‑frequency drive for the conveyor motor, and a temperature sensor monitoring bearing heat. Previously, this would require a larger, costlier PLC or a complex relay panel. The 2080‑LC20‑20QBBK provides everything needed in one compact package: digital inputs for the sensors, analog input for temperature monitoring, and analog output for speed control of the AC drive -12. Maintenance staff can quickly diagnose faults using the onboard LEDs, and the MicroSD card stores recipe settings for different product types, allowing rapid changeovers.

For system integrators in building management (BMS) or remote terminal unit (RTU) applications, the 2080‑LC20‑20QBBK addresses critical pain points: embedded support for up to four 10k thermistor temperature inputs allows direct connection to HVAC temperature sensors without external signal conditioning -7. The Modbus RTU and TCP support enables communication with a wide range of building automation devices, while the Ethernet port provides connectivity to central SCADA systems. The compact size allows installation in tight electrical enclosures, and the wide -20°C to 65°C operating temperature range ensures reliable performance in unheated mechanical rooms -11.

 

Parameters

Main Parameters	Value/Description
Product Model	2080‑LC20‑20QBBK
Manufacturer	Allen‑Bradley / Rockwell Automation
Product Category	Programmable Logic Controller (Micro820 Series)
Status	Discontinued as of 05 December 2025; Replacement: 2080‑L20E‑20QBBK -9
Digital Inputs	12 (24V DC sink/source; 8 isolated, 4 non‑isolated shared with analog) -3-5
Digital Outputs	7 (24V DC FET, sourcing) -8-11
Analog Inputs	4 (0‑10V DC, configurable, shared with inputs 00‑03) -2-6
Analog Output	1 (0‑10V DC, non‑isolated) -8
Program Memory	280 KB -8
Communication Ports	1 x EtherNet/IP (10/100 Base‑T), 1 x non‑isolated RS‑232/485 serial, 1 x USB -3-11
Supported Protocols	EtherNet/IP, Modbus TCP/IP, Modbus RTU, DF1 -7
Plug‑in Slots	2 (for Micro800 plug‑in modules) -8-11
MicroSD Support	Yes (program transfer, data logging, recipe management) -8-12
Real‑Time Clock	Yes (embedded) -3-6
Input Voltage	24V DC (range 20.4 – 26.4V DC) -8
Power Consumption	6.0W at 26.4V DC -6
Operating Temperature	-20°C to 65°C (-4°F to 149°F) -5-11
Certifications	c‑UL‑us, CE, RCM, KC, UKCA -11