Allen-Bradley 1769-L24ER-QB1B CompactLogix 5370 L2 Controller

Product Description

The 1769-L24ER-QB1B (1769-L24ER-QB1B) is a highly integrated, all-in-one automation controller from the Allen-Bradley CompactLogix 5370 L2 family. This processor is engineered for small to medium-scale machine control, offering a high-performance CPU combined with an embedded I/O bank of 32 digital points (16 DC inputs and 16 DC outputs). By consolidating the controller, power supply, and I/O into a single chassis, it significantly reduces panel space and simplifies multi-device wiring.

Equipped with dual EtherNet/IP ports, the 1769-L35E (1769-L24ER-QB1B) supports Device Level Ring (DLR) topologies for network resiliency and allows for daisy-chaining without external switches. A standout feature is its maintenance-free energy storage (capacitor), which eliminates the need for lithium batteries to preserve user memory during power loss.

Detailed Technical Specifications

The following specifications define the hardware capabilities and electrical performance of the 1769-L24ER-QB1B:

• Manufacturer: Allen-Bradley / Rockwell Automation

• Model Number: 1769-L24ER-QB1B

• User Memory: 0.75 MB

• Embedded I/O: 32 Points (16 × 24V DC Sink/Source Inputs; 16 × 24V DC Sourcing Outputs)

• EtherNet/IP Nodes: Up to 8 nodes supported

• Local Expansion: Supports up to 4 additional 1769 Compact I/O modules

• Integrated Motion: Up to 4 axes of Integrated Motion on EtherNet/IP (Positioning only)

• Communication Ports: 2 × EtherNet/IP (10/100 Mbps), 1 × USB (Programming/Configuration)

• Module Power Supply: Integrated 24V DC (Field power required)

• Backplane Current Draw: 1.54 A @ 5V DC; 0.95 A @ 24V DC

• Input Characteristics: On-state current 2–5 mA; Off-state max voltage 5V DC

• Output Characteristics: Max voltage drop 1.0V DC at 1.0A

• Total Output Current: 4 A total module limit @ 60 °C

• Dimensions (W x H x D): 115 × 105 × 118 mm

• Operating Temperature: 0–60 °C (32–140 °F)

• Storage Memory Card: Supports 1784-SD1 (1 GB) or 1784-SD2 (2 GB) Secure Digital cards