Allen-Bradley 1769-L24ER-QB1B CompactLogix 5370 L2 Controller
Allen-Bradley 1769-L24ER-QB1B is a CompactLogix 5370 L2 programmable automation controller with 750 KB of user memory, 32 tasks / 100 programs per task, an embedded 24 V DC isolated power supply, dual EtherNet/IP ports with DLR support, a USB programming port, and an integrated DeviceNet-ready communication set. It supports up to 4 local 1769 I/O expansion modules and mounts on a DIN rail or panel, making it a compact, controller-level solution for machine control, motion, and drive integration in mid-size applications.
Overview
The 1769-L24ER-QB1B belongs to the Allen-Bradley CompactLogix 5370 L2 controller family. It combines the control capabilities of the Logix platform with an embedded dual-port EtherNet/IP switch that supports linear, star, and Device Level Ring (DLR) topologies. With 750 KB of user memory and support for 32 tasks with up to 100 programs per task, it is well suited for mid-range machines that require deterministic control, integrated I/O expansion, and network flexibility in a single compact package.
Key Features
- 750 KB user memory; 32 tasks / 100 programs per task
- 2 × EtherNet/IP ports (embedded switch, DLR supported) + 1 × USB port
- Supports up to 4 local 1769 I/O expansion modules
- Embedded 24 V DC isolated power supply (QB1B power type)
- DeviceNet communication capability
- Current draw 1.54 A @ 5 V DC; 0.95 A @ 24 V DC; max power dissipation 12 W
- Isolation voltage 30 V (continuous)
- DIN rail or panel mounting; open-style enclosure
- Programmed with Studio 5000 Logix Designer (RSLogix 5000) software
- Operating temperature 0 to 60 °C (32 to 140 °F)
Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Product Line | CompactLogix |
| Series | CompactLogix 5370 L2 |
| Part Number / Catalog No. | 1769-L24ER-QB1B |
| UPC | 885630101248 |
| Product Type | Programmable Automation Controller |
| User Memory | 750 KB |
| Controller Tasks | 32 Tasks / 100 Programs per Task |
| Communication Ports | 2 × EtherNet/IP + 1 × USB |
| Communication Options | EtherNet/IP and DeviceNet |
| Local Expansion Modules | Maximum 4 |
| Embedded Power Supply | 24 V DC input (isolated) |
| Current Draw | 1.54 A @ 5 V DC; 0.95 A @ 24 V DC |
| Maximum Power Dissipation | 12 W |
| Isolation Voltage | 30 V (continuous) |
| Mounting Options | DIN Rail or Panel Mount |
| Enclosure Type | Open-Style |
| Operating Temperature Range | 0 to 60 °C (32 to 140 °F) |
| Dimensions (H × W × D) | 118 × 115 × 105 mm (4.65 × 4.53 × 4.13 in) |
| Weight | 2.31 lbs (1.05 kg) |
| Country of Origin | Malaysia |
Applications
The 1769-L24ER-QB1B is widely used in packaging, material handling, assembly, pumping, and general machine control applications. Its dual-port EtherNet/IP with DLR makes it a strong fit for networked machines that need ring-recovery resiliency, while the integrated power supply and 1769 I/O expansion keep panel space and wiring to a minimum.
Why Buy from Us
This controller is available new in original factory packaging, fully tested and backed by a standard warranty of 1 year. We ship worldwide with careful anti-static packaging and fast dispatch. Quantity discounts and repair/exchange options are available on request.
Documents
GENERAL
| Resource | Title | Link |
|---|---|---|
| Product Cutsheet | 1769-L24ER-QB1B — CompactLogix 5370 L2 Controller Product Cutsheet | Product Cutsheet API |
| Selection Guide | 1769-SG001 — 1769 CompactLogix Modular I/O Selection Guide (English) | 1769-sg001_-en-p.pdf |
TECHNICAL DATA
| Resource | Title | Link |
|---|---|---|
| Publication | 1769-TD005 — CompactLogix 5370 Controllers Technical Data (English, covers 1769-L24ER-QB1B dimensions and specifications) | 1769-td005_-en-p.pdf |
USER MANUAL
| Resource | Title | Link |
|---|---|---|
| Publication | 1769-UM021 — CompactLogix 5370 Control Systems User Manual (English, covers 1769-L24ER-QB1B controller) | 1769-um021_-en-p.pdf |
