Allen-Bradley 1769-L24ER-QB1B CompactLogix 5370 Controller Series A Used
The Allen-Bradley 1769-L24ER-QB1B (Catalog Number: 1769-L24ER-QB1B) is a highly integrated CompactLogix 5370 L2 controller designed for small to mid-sized automation applications. Unlike the L3 series, the 1769-L24ER-QB1B features an embedded I/O configuration, providing a ready-to-use control solution that minimizes cabinet space. This specific unit is a Used Series A revision, offering a cost-effective entry point for system maintenance or machine retrofits while maintaining the robust processing power of the Logix engine.
This controller is equipped with 0.75 MB of user memory and features dual EtherNet/IP ports with an integrated switch, supporting Device Level Ring (DLR) topologies for high network availability. The embedded I/O suite includes 16 digital 24V DC inputs and 16 digital 24V DC outputs (source), making it ideal for discrete manufacturing tasks. Additionally, it supports up to 4 local 1769 Compact I/O expansion modules and up to 8 EtherNet/IP nodes, providing significant scalability for distributed control and integrated motion.
Hardware configuration and operational limits for the 1769-L24ER-QB1B:
| Parameter | Specification Details |
| Model Number | 1769-L24ER-QB1B |
| Series/Revision | Series A (Used) |
| User Memory | 0.75 MB |
| Embedded Digital Inputs | 16 points (24V DC) |
| Embedded Digital Outputs | 16 points (24V DC Sourcing) |
| EtherNet/IP Nodes | Supports up to 8 nodes |
| Expansion Capacity | Supports up to 4 modules (1769 Compact I/O) |
| Communication Ports | 2 EtherNet/IP (DLR supported), 1 USB (programming) |
| Integrated Motion | Supports up to 2 axes (Position Loop over EtherNet/IP) |
| Power Supply | Embedded 24V DC Input |
| Dimensions (W x H x D) | 100 x 130 x 105 mm |
| Weight | 0.66 kg (1.45 lbs) |
| Programming Software | Studio 5000 Logix Designer |
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