1769-L33ER | Allen-Bradley CompactLogix 5370 PAC Supplier

What Makes the 1769-L33ER a Smart Choice for Medium Automation?

When your application demands reliable control without the complexity of large systems, the 1769-L33ER from Allen-Bradley provides a balanced solution. This CompactLogix 5370 controller combines modular expansion with robust communication, making it suitable for a wide range of industrial processes.

As a Programmable Automation Controller, the 1769-L33ER supports up to 32 I/O modules across three banks, giving you flexibility to scale as needs grow. Its 2 MB memory handles complex logic, while the integrated Ethernet port uses EtherNet/IP protocol for seamless data exchange.

Key Features and Technical Specifications

• Memory: 2 MB built-in user memory for program and data storage.
• Communication: 1 USB port and 1 Ethernet port supporting EtherNet/IP.
• I/O Capacity: Supports up to 32 I/O modules and 3 I/O banks.
• Tasks and Programs: 32 tasks with 100 programs per task.
• Mounting Options: DIN rail or panel mounting for flexible installation.
• Operating Temperature: 0° to +60°C (+32° to +140°F).
• Vibration Resistance: 5G at 10 to 500 Hz, 0.030 in. peak-to-peak.
• Shock Tolerance: 20 g on DIN rail; 30 g on panel.
• Non-Volatile Memory: Ships with 1784-SD1 card (1 GB); upgradeable to 1784-SD2 (2 GB).
• Battery: Not required; uses internal energy storage.

One standout feature is the dual Ethernet ports that act as an embedded switch, supporting 10/100 Mbps data rates with auto-negotiation. This simplifies network topology and reduces the need for external switches in smaller setups.

Applications and Use Cases

In manufacturing environments, the 1769-L33ER excels at controlling conveyor systems, packaging lines, and material handling equipment. Its EtherNet/IP connectivity allows integration with HMIs, SCADA systems, and other controllers. For example, a food processing plant can use this controller to manage multiple production lines while monitoring performance via a central dashboard. Similarly, in water treatment facilities, the controller handles pump sequencing and valve control with reliable precision.

Installation and Setup

Mounting the 1769-L33ER is straightforward. Choose between DIN rail or panel mounting based on your enclosure design. For DIN rail installation, ensure the rail is securely fastened to withstand vibration. Panel mounting provides higher shock resistance (30 g vs. 20 g). Connect the controller to a compatible power supply such as the 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4. Use copper wire rated for 90°C, with solid wire sizes from 22 to 14 AWG or stranded wire from 22 to 16 AWG. Maintain an ambient temperature between 0° and 60°C inside the enclosure.

Maintenance and Reliability

Routine inspection of the controller and its environment ensures long-term reliability. Check that the enclosure temperature stays within the 0° to 60°C range and that humidity remains below 95% non-condensing. Periodically verify that all I/O modules are securely seated and that Ethernet cables are undamaged. Because the controller uses internal energy storage instead of a battery, you avoid the hassle of battery replacements. Following these simple steps minimizes downtime and extends service life.

Compatibility and Integration

The 1769-L33ER integrates smoothly with other CompactLogix components. It supports up to 16 local I/O modules and three expansion banks using 1769 Compact I/O modules. For DeviceNet networks, you can install a 1769-SDN scanner module. The controller also works with various power supplies, including the 1769-PA2, 1769-PB2, 1769-PA4, and 1769-PB4. Electronic keying prevents incompatible modules from being used, reducing configuration errors.

Frequently Asked Questions

Q: What is the memory size of the 1769-L33ER?

A: The controller has 2 MB of built-in user memory.

Q: Does the 1769-L33ER require a battery?

A: No, it uses internal energy storage to retain user memory, so no battery is needed.

Q: How many I/O modules can the 1769-L33ER support?

A: It supports up to 32 I/O modules and up to 3 I/O banks.

Q: What communication protocols does the 1769-L33ER support?

A: It supports EtherNet/IP via its Ethernet port.

Q: Can the 1769-L33ER be mounted on a DIN rail?

A: Yes, it supports both DIN rail and panel mounting.

Q: What non-volatile memory options are available?

A: The controller ships with a 1784-SD1 card (1 GB) and can be upgraded to a 1784-SD2 card (2 GB).

Product Support and Availability

The 1769-L33ER is available from Petro Auto Tech. Please verify current lifecycle status and availability with Petro Auto Tech before ordering. In stock and ready to ship.