The 1769-L33ER (Series A) is a high-performance controller within the Allen-Bradley CompactLogix 5370 family, designed for mid-range automation applications. It delivers a powerful platform for integrated motion control, high-speed I/O, and robust network connectivity through dual EtherNet/IP ports. An internal energy storage module eliminates the need for a battery, preserving user data during power cycles while reducing long-term maintenance requirements.
| Parameter | Specification |
|---|---|
| User Memory | 2 MB on-board volatile memory |
| Non-Volatile Storage | 1 GB Secure Digital (SD) card included (supports up to 2 GB) |
| Maximum Local I/O Expansion | Up to 16 × 1769 Compact I/O modules |
| Communication Ports | 2 × EtherNet/IP ports, 1 × USB 1.1 configuration port |
| Ethernet Topologies | Linear and Device Level Ring (DLR) |
| Integrated Motion Capacity | Up to 8 axes over EtherNet/IP |
| Maximum Ethernet Nodes | 32 |
| Controller Tasks | 32 tasks, up to 100 programs per task |
| Current Draw @ 5 V DC | 560 mA |
| Current Draw @ 24 V DC | 225 mA |
| Operating Temperature | 0 to 60 °C (32 to 140 °F) |
The 1769-L33ER is commonly used in high-speed packaging machines, food and beverage production lines, and material handling systems, where accurate motion control and distributed I/O performance are essential.
Does this unit require a separate power supply?
Yes. The controller must be powered using one of the following modules: 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4.
Is Series A hardware compatible with current firmware?
Yes. It supports Studio 5000 Logix Designer and is compatible with current firmware revisions within the 5370 L3 controller family.
How many expansion banks are supported?
Up to 3 I/O banks via expansion cables, provided the total number of I/O modules does not exceed 16.
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