Skip to product information
1 of 3

Allen-Bradley 1769-L23E-QB1B CMPLX 512KB Enet DI/O Controller

Allen-Bradley 1769-L23E-QB1B CMPLX 512KB Enet DI/O Controller

  • Manufacturer: Allen-Bradley

  • Product No.: 1769-L23E-QB1B

  • Condition:1000 in stock

  • Product Type: CMPLX 512KB Enet DI/O Controller

  • Product Origin: USA

  • Payment: T/T, Western Union

  • Weight: 910g

  • Shipping port: Xiamen

  • Warranty: 12 months

  • 24/7 Support
  • 30-Day Returns
  • Fast Shipping

Product Overview

  • Manufacturer: Allen-Bradley
  • Model/Part Number: 1769-L23E-QB1B
  • Model Type: CompactLogix 512KB Ethernet Digital I/O Controller
  • Description: The 1769-L23E-QB1B is a CompactLogix controller with 512 KB of user memory, designed for Ethernet-based communication. This model is equipped with Digital I/O (DI/O) and supports serial communication for remote I/O expansion. Ideal for small to medium-sized applications requiring Ethernet connectivity and reliable digital I/O control.

Key Features

  • 512 KB User Memory for program storage
  • 3 I/O Expansion Modules support (limited by current draw)
  • Ethernet Communication: Integrates seamlessly with EtherNet/IP and DF1, DH-485, ASCII serial communication
  • RS-232 Serial Port for additional connectivity (DF1, DH-485, and ASCII protocols)
  • Basic Insulation Type Isolation with 30V continuous isolation
  • No optional non-volatile memory, relying on standard memory
  • Mounting Flexibility: Can be mounted on DIN rail or panel

Technical Specifications

Attribute Specification
User Memory 512 KB
Optional Nonvolatile Memory None
Number of Expansion I/O Modules 3 (limited by current draw)
Replacement Battery 1769-BA
Current Draw @ 5V DC 1000 mA
Current Draw @ 24V DC 700 mA
Power Dissipation 7.01 W
Isolation Voltage 30V continuous, type-tested at 710V DC for 60s
Serial Communication Ports CH0 - RS-232, DF1, DH-485, ASCII (fully isolated)
Serial Communication Speed Max 38.4 Kbps
Weight Approx. 0.91 kg (2 lb)
Slot Width 1
Module Location DIN rail or panel mount
Mounting Screw Torque 1.1–1.8 N•m (10–16 lb•in)
Wire Category 2 on signal ports, 2 on power ports, 2 on communication ports
Wire Size (DC Power) 0.25–2.5 mm² (22–14 AWG) solid or stranded copper wire
Wire Size (Discrete I/O) 0.5–0.8 mm² (20–18 AWG) solid or stranded copper wire
Wire Size (Embedded Analog/High-Speed Counter) 0.5–0.8 mm² (20–18 AWG) shielded copper wire
North American Temperature Code T3C
Enclosure Type Rating None (open-style)

Applications

  • Ethernet-based Automation: Best suited for Ethernet/IP connected systems.
  • Digital I/O Control: Effective for controlling and monitoring discrete digital inputs and outputs in small to medium automation systems.
  • Compact Systems: Ideal for compact control systems that require limited expansion (supports up to 3 expansion I/O modules).
  • Remote I/O Applications: Works well with remote I/O expansions using serial communication ports (RS-232).
  • General Automation: Suitable for various applications that require reliable memory, power dissipation, and modular I/O expansion
View full details

Product Description

Product Overview

  • Manufacturer: Allen-Bradley
  • Model/Part Number: 1769-L23E-QB1B
  • Model Type: CompactLogix 512KB Ethernet Digital I/O Controller
  • Description: The 1769-L23E-QB1B is a CompactLogix controller with 512 KB of user memory, designed for Ethernet-based communication. This model is equipped with Digital I/O (DI/O) and supports serial communication for remote I/O expansion. Ideal for small to medium-sized applications requiring Ethernet connectivity and reliable digital I/O control.

Key Features

  • 512 KB User Memory for program storage
  • 3 I/O Expansion Modules support (limited by current draw)
  • Ethernet Communication: Integrates seamlessly with EtherNet/IP and DF1, DH-485, ASCII serial communication
  • RS-232 Serial Port for additional connectivity (DF1, DH-485, and ASCII protocols)
  • Basic Insulation Type Isolation with 30V continuous isolation
  • No optional non-volatile memory, relying on standard memory
  • Mounting Flexibility: Can be mounted on DIN rail or panel

Technical Specifications

Attribute Specification
User Memory 512 KB
Optional Nonvolatile Memory None
Number of Expansion I/O Modules 3 (limited by current draw)
Replacement Battery 1769-BA
Current Draw @ 5V DC 1000 mA
Current Draw @ 24V DC 700 mA
Power Dissipation 7.01 W
Isolation Voltage 30V continuous, type-tested at 710V DC for 60s
Serial Communication Ports CH0 - RS-232, DF1, DH-485, ASCII (fully isolated)
Serial Communication Speed Max 38.4 Kbps
Weight Approx. 0.91 kg (2 lb)
Slot Width 1
Module Location DIN rail or panel mount
Mounting Screw Torque 1.1–1.8 N•m (10–16 lb•in)
Wire Category 2 on signal ports, 2 on power ports, 2 on communication ports
Wire Size (DC Power) 0.25–2.5 mm² (22–14 AWG) solid or stranded copper wire
Wire Size (Discrete I/O) 0.5–0.8 mm² (20–18 AWG) solid or stranded copper wire
Wire Size (Embedded Analog/High-Speed Counter) 0.5–0.8 mm² (20–18 AWG) shielded copper wire
North American Temperature Code T3C
Enclosure Type Rating None (open-style)

Applications

  • Ethernet-based Automation: Best suited for Ethernet/IP connected systems.
  • Digital I/O Control: Effective for controlling and monitoring discrete digital inputs and outputs in small to medium automation systems.
  • Compact Systems: Ideal for compact control systems that require limited expansion (supports up to 3 expansion I/O modules).
  • Remote I/O Applications: Works well with remote I/O expansions using serial communication ports (RS-232).
  • General Automation: Suitable for various applications that require reliable memory, power dissipation, and modular I/O expansion

Download PDF file here:

Click to Download PDF