Rated 4.3 with 13 reviews


Revisions: Ser A Ser B

Description:  Allen Bradley CompactLogix assembled EtherNet Controller, 512 Kilobyte capacity of memory, 16DI, 16DO, 24 DC Power CPU Module. RSLogix5000 | Serial communication | series A&B | copper wire type. Weighs 3lbs and is 11X8x6 inches.

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Warranty: 1 year DO Supply Warranty Included
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Repairs: We offer repair service for the 1769-L23E-QB1B.
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About 1769-L23E-QB1B

The Allen-Bradley 1769-L23E-QB1B compact controller is an electronic motor control device with a built-in power supply and a 512 KB memory that runs on the RSLogix5000 software. The 1769-L23E-QB1B controller does not support compact flash cards but it can communicate with other machines through a single Ethernet/IP port and through an RS-232 (DF1 or ASCII) serial communication port. It is an embedded compact Logix controller with 16 DC inputs and 16 DC outputs. The 1769-L23E-QB1B module expansion setup can include up to 3 Allen-Bradley 1769 modules and its size can only be limited by the amount of current that each additional module draws. It has an embedded 24 Volts DC power supply and a 1000 milliamps BUS current at 5 Volts DC. The 1769-L23E-QB1B controller has a request packet interval (RPI) speed of approximately 1.0 millisecond of scan time across 1 to 4 modules. It comes with an Allen-Bradley 1769-BA replaceable battery.

At 24 Volts DC, the Allen-Bradley 1769-L23E-QB1B compact controller has a drawn current of 700 milliamps and it dissipates 7 Watts of power. Devices can be connected to the 1769-L23E-QB1B through the Allen-Bradley 1756-CP3 or 1747-CP3 serial cables. Additional embedded features of the 1769-L23E-QB1B drive include 16 inputs and a 24-Volt voltage category. It operates at 10 to 30 Volts DC at 30 degrees Celsius (86 degrees Fahrenheit). Additional embedded features include an input impedance of 3 kiloohms, a maximum inrush current of 250 milliamps, an off-state voltage of 5 Volts DC maximum, and an off-state current of 1.5 milliamps. The 1769-L23E-QB1B compact controller also has embedded output features which are a 16-unit output, an output delay time of 0.1 milliseconds, and a maximum leakage current of 1.0 milliamps at 26.4 Volts DC. The current across each module of the 1769-L23E-QB1B controller is rated at 4.0 Amps at 60 degrees Celsius (140 degrees Fahrenheit). The 1769-L23E-QB1B controller has an approximate weight of 0.91 kilograms (2 pounds) and it can be mounted on a DIN rail or on a panel mounting base.

Technical specifications:

Manufacturer:Rockwell Automation
Part Number/Catalog No.:1769-L23E-QB1B
Product Line:CompactLogix
Module Type:Processor Module
Memory:512 KB
Shipping Weight:3 pounds
Shipping Dimensions:11 x 8 x 6 inches
Series:A and B
Replacement Terminal Block Part Number:1769-RTBN18
Wire Type:Copper-90 degrees Celsius
Wire Size (Solid):22 to 14 AWG
Wire Size (Stranded):22 to 16 AWG


Question: What is this module’s communication type?

Answer: The 1769-L23E-QB1B has a serial communication type.


Question: What type of software does this module require?

Answer: The 769-L23E-QB1B uses the RSLogix5000 software.


Question: Can this module be purchased with a warranty?

Answer: Yes, the 1769-L23E-QB1B comes with a free 1-year warranty from DO Supply, Inc.


Question: Where can I send the 1769-L23E-QB1B to be repaired?

Answer: DO Supply, Inc. offers a variety of repair services for the 1769-L23E-QB1B.

Type Lead Time Price Action
Repair Service 2-4 weeks AskGet Quote

Our highly skilled technicians can repair your 1769-L23E-QB1B. All of our repairs come with a 1 Year DO Supply Warranty. Please contact us for additional information about our repair process.

Please refer to the manual for more information about the 1769-L23E-QB1B such as the wiring diagrams, data sheets, firmware information and migration or obsolescence details.

Revision Part # Also Known as Availability
1769-L23E-QB1B Ser A
1769-L23E-QB1B/A, Series A, Rev A Request Quote
1769-L23E-QB1B Ser B
1769-L23E-QB1B/B, Series B, Rev B Request Quote

Common misspellings: 1769-L23E-QBIB