1769-L24ER-QBFC1B CompactLogix 5370 L2 Controller 750KB EtherNet/IP | Allen-Bradley

The Original New Allen-Bradley 1769-L24ER-QBFC1B CompactLogix 5370 L2 Controller is a highly integrated programmable automation controller designed for mid-size machine control and industrial automation applications. Part of the CompactLogix 5370 L2 family, this controller combines a 750 KB user memory processor, embedded power supply, and extensive onboard I/O into a single compact module. Featuring 16 DC inputs, 16 DC outputs, 4 universal analog inputs, 2 analog outputs, and 4 high-speed counters, it delivers robust control capabilities without requiring additional I/O modules for basic applications. Dual EtherNet/IP ports with Device Level Ring (DLR) support provide network resilience, making it ideal for small to mid-size control applications.

Core Engineering Highlights:
750 KB user memory | 16 DC inputs + 16 DC outputs | 4 universal analog inputs + 2 analog outputs | 4 high-speed counters | Dual EtherNet/IP ports with DLR | 1 USB programming port | 1 GB SD card included | 24V DC isolated power supply | Supports up to 4 local 1769 I/O modules

Key Features:

• Original New Allen-Bradley 1769-L24ER-QBFC1B controller

• 750 KB user memory for program and data storage

• 16 embedded 24V DC sink/source digital inputs

• 16 embedded 24V DC sourcing digital outputs (0.5A per point)

• 4 embedded universal analog inputs (voltage, current, thermocouple, RTD capable)

• 2 embedded universal analog outputs (voltage, current)

• 4 high-speed counter (HSC) channels for precise pulse measurement

• Dual EtherNet/IP ports with Device Level Ring (DLR) capability

• 1 USB programming port for fast configuration and firmware updates

• 1 GB Secure Digital (SD) memory card included (supports up to 2 GB)

• Supports up to 4 local 1769 expansion I/O modules

• 8 EtherNet/IP node connections and 120 TCP connections

• 24V DC isolated power supply input

• Integrated motion support: 2 axes kinematics for simple articulated robotics

• No lithium battery required — built-in energy storage for data retention

• Open-style enclosure (IP20 equivalent)

• Compact 118 x 140 x 105 mm footprint for space-constrained panels

Applications:

• Mid-size machine control and automation systems

• Packaging machinery and material handling equipment

• OEM equipment requiring integrated I/O and communication

• Process skids and small production lines

• Conveyor control and sorting systems

• Pump, fan, and compressor control

• Applications requiring up to 2 axes of motion control

• Distributed I/O architectures over EtherNet/IP networks

Technical Specifications:

Embedded Digital I/O:

Embedded Analog I/O:

High-Speed Counters:

Communications:

Power Supply:

Expansion:

Physical & Environmental:

System Compatibility:

• Rockwell Automation CompactLogix 5370 L2 controllers

• 1769 Compact I/O expansion modules (up to 4 modules)

• 1769 power supplies (for expansion bank power)

• 1769-ECR right end cap (required)

• Studio 5000 Logix Designer® application (minimum version 21.011)

• RSLogix 5000 software

• EtherNet/IP networks with DLR topology

• PanelView Plus HMIs

• PowerFlex drives over EtherNet/IP

Typical System Architecture:
1769-L24ER-QBFC1B CompactLogix 5370 L2 Controller
│
├── Embedded I/O (16 DI / 16 DO / 4 AI / 2 AO / 4 HSC)
│
├── Dual EtherNet/IP Ports (DLR, Star, Linear topologies)
│ ├── EtherNet/IP Nodes (up to 8 devices: HMIs, Drives, Remote I/O)
│ └── 120 TCP Connections
│
├── Up to 4 Local 1769 Expansion I/O Modules
│
└── 1 GB SD Card (included) / USB Programming Port

Related Products:

• 1769-ECR – Right end cap for CompactLogix system (required)

• 1769-IB16 – 16-point 24V DC digital input module (expansion)

• 1769-OB16 – 16-point 24V DC digital output module (expansion)

• 1769-IF8 – 8-channel analog input module (expansion)

• 1769-OF8C – 8-channel analog output module (expansion)

• 1769-PA4 – CompactLogix AC power supply (for expansion bank)

• 1769-PB4 – CompactLogix DC power supply (for expansion bank)

• 1769-L24ER-QBFC1BK – Conformal coated version for harsh environments

• 1784-SD2 – 2 GB Secure Digital memory card (optional upgrade)

• 1769-RTB40AIO – RTB kit for analog I/O connections

PLC ERA is an independent industrial automation distributor supplying 100% genuine Original New products through established global supply channels. Allen-Bradley, CompactLogix, ControlLogix, and Studio 5000 are trademarks of Rockwell Automation.