Allen‑Bradley 1769‑L24ER‑QBFC1B CompactLogix 5370 L2 PLC Controller 750KB 24V DC

The Allen‑Bradley 1769‑L24ER‑QBFC1B is a CompactLogix 5370 L2 programmable automation controller (PAC) with 750KB user memory, dual EtherNet/IP ports supporting Device Level Ring (DLR), and embedded 24V DC power supply. It provides 16 DC inputs, 16 DC outputs, 4 universal analog inputs, 2 analog outputs, and 4 high‑speed counters, enabling machine control and process automation without additional I/O modules. Used in CompactLogix automation systems with PLC, I/O, HMI, and industrial network components.

Applications

• Small‑to‑mid‑sized machine control (hoists, indexing tables, packaging machinery)

• Factory automation and assembly lines with integrated I/O

• Material handling and conveyor control systems

• Process monitoring and data acquisition

• OEM equipment and custom machine building

Key Features

• 750KB user memory (expandable via included 1GB SD card, supports up to 2GB)

• Dual 10/100 Mbps EtherNet/IP ports with Device Level Ring (DLR) support

• Embedded I/O: 16 DC inputs, 16 DC outputs, 4 universal analog inputs, 2 analog outputs, 4 high‑speed counters

• Embedded 24V DC isolated power supply (10‑28.8V DC operating range)

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

• USB programming port and RS‑232 serial port

• Supports up to 8 EtherNet/IP nodes and 2 axes of integrated motion over EtherNet/IP

• 0°C to 60°C operating temperature, 0.9 kg (1.9 lb) weight

• DIN rail or panel mounting

Technical Specifications

• Brand: Allen‑Bradley (Rockwell Automation)

• Model: 1769‑L24ER‑QBFC1B

• Series: CompactLogix 5370 L2

• User memory: 750 KB (expandable via SD card to 2 GB)

• I/O: 16 DC inputs (sinking/sourcing), 16 DC outputs (sourcing), 4 universal analog inputs (configurable: 0‑10V, 0‑20 mA, ±10V, thermocouple, RTD), 2 analog outputs (0‑10V, 0‑20 mA), 4 high‑speed counters

• Communication: 2 EtherNet/IP (10/100 Mbps, DLR), 1 USB, 1 RS‑232

• Protocols: EtherNet/IP, Modbus TCP, DF1, DH‑485, ASCII

• Power supply: Embedded 24V DC (10‑28.8V DC range), 1A @ 5V DC, 0.8A @ 24V DC, 21W max dissipation

• Isolation: 30V continuous (basic), 30V continuous isolation voltage

• Mounting: DIN rail or panel mount

• Operating temperature: 0°C to 60°C

• Nonvolatile memory: 1 GB SD card included (1784‑SD1)

• Weight: 0.9 kg (1.9 lb)

System Integration

• PLC Controllers: CompactLogix 5370 L2, CompactLogix 5370 L3, ControlLogix 5570/5580 (via EtherNet/IP)

• Networks: EtherNet/IP, DLR ring, star, linear topologies; Modbus TCP; RS‑232 (DF1, DH‑485)

• I/O Expansion: 1769 Compact I/O modules (digital, analog, specialty), up to 4 local modules

• Software: Studio 5000 Logix Designer, RSLogix 5000 (version 21 or later)

• Power: Embedded 24V DC (external power supply required)

Related Products

• Higher Memory Controller: 1769‑L33ER CompactLogix (2MB, more I/O capacity) – upgrade path

• Analog Output Module: 1769‑OF8 CompactLogix Analog Output Module – mixed signal expansion

• Power Supply: 1769‑PA4 CompactLogix AC Power Supply – alternative power option

• EtherNet/IP Adapter: 1769‑AENTR CompactLogix Adapter – remote I/O expansion

PLC ERA is an independent industrial automation distributor. Products are sourced from established supply channels and inspected before shipment. International shipping available.