Product Overview
When your medium-sized automation system requires a reliable, scalable control solution, the Allen-Bradley 1769-L33ER Programmable Automation Controller delivers. Part of the CompactLogix 5370 family, this controller replaces older generation PLCs with enhanced performance and built-in Ethernet communication. It supports up to 16 local I/O modules across three banks, making it an ideal upgrade path for systems needing more processing power and network connectivity.
Technical Specifications
| Specification |
Value |
| Manufacturer |
Rockwell Automation / Allen-Bradley |
| Part Number |
1769-L33ER |
| Product Family |
CompactLogix |
| Product Line |
CompactLogix 5370 |
| Product Type |
Programmable Automation Controller |
| Module Type |
Processor Module |
| Communication |
Ethernet |
| Communication Ports |
1 USB; 1 Ethernet |
| Supported Protocols |
EtherNet/IP |
| Memory |
2 MB |
| Max I/O Modules |
32 Modules |
| Max I/O Banks |
3 banks |
| No. of Tasks |
32 |
| Programs per Task |
100 |
| Non-Volatile Memory |
1784-SD1 1 GB (shipped); 1784-SD2 2 GB (optional) |
| Battery |
1747-BA (not required for memory retention) |
| Operating Temperature |
0° to +60°C (+32° to +140°F) |
| Vibration (Operating) |
10 to 500 Hz, 5G, 0.030 in. peak-to-peak |
| Shock (DIN Rail) |
20 g |
| Shock (Panel) |
30 g |
| Mounting |
DIN Rail; Panel Mounting |
| Shipping Weight |
2 pounds |
| Shipping Dimensions |
8 x 8 x 5 inches |
Application Scenarios
The Allen-Bradley 1769-L33ER excels in discrete manufacturing, material handling, and packaging lines. Its built-in EtherNet/IP protocol allows seamless integration with HMIs, SCADA systems, and other controllers. For example, in a conveyor sorting system, the 1769-L33ER coordinates multiple I/O banks to control photoelectric sensors, motor starters, and diverters. The dual Ethernet ports enable redundant network topologies, reducing downtime.
Compatibility & Integration
This controller works with 1769 Compact I/O modules and supports DeviceNet via the 1769-SDN scanner module. It communicates using EtherNet/IP and can connect to up to 32 Ethernet nodes. The USB port provides a convenient secondary configuration interface. For power, use 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4 power supplies. The 1769-L33ER also supports electronic keying to prevent hardware mismatches.
Selection Guide & Purchasing Advice
Before purchasing, verify your system requires a CompactLogix 5370 controller and that the 1769-L33ER meets your I/O count and memory needs. Ensure compatible power supplies and expansion cables are available. For reliable sourcing, consider UBEST Automation (ubest101), a trusted supplier of Allen-Bradley industrial automation parts. Their inventory includes genuine 1769-L33ER units with full warranty support.