1769-L32C | Allen-Bradley CompactLogix Processor Supplier

What Is the 1769-L32C?

When ControlNet network configuration data must be stored reliably, the 1769-L32C from Allen-Bradley delivers automatic backup and parameter retention. This modular processor module belongs to the CompactLogix series and is designed for industrial automation environments where uptime matters. With 750 KB of memory and serial communication, it supports up to 16 I/O modules across three I/O banks.

Key Features & Technical Specs

• Manufactured by Rockwell Automation under the Allen-Bradley brand.
• Part of the CompactLogix product line as a processor module.
• Offers 750 KB of memory for program and data storage.
• Supports serial communication for integration with ControlNet networks.
• Available in Series A and B revisions.
• Accepts copper wire rated for 90 degrees Celsius.
• Solid wire size range: 22 to 14 AWG; stranded wire: 22 to 16 AWG.
• Shipping weight of 2 pounds and dimensions of 8 x 8 x 5 inches.

Unique Insight: The 750 KB memory is dedicated to user programs and configuration data, enabling the 1769-L32C to act as a network backup module automatically. This ensures that if a primary module fails, the stored parameters can be restored quickly, minimizing downtime.

Applications & Use Cases

In manufacturing lines where ControlNet is the backbone, the 1769-L32C serves as a reliable data storage and backup controller. For example, in a packaging facility, this module can store network configuration parameters and restore them after a power cycle, reducing manual reconfiguration. Its ability to handle up to 16 I/O modules makes it suitable for medium-scale automation tasks.

Installation & Setup

Mount the 1769-L32C on a DIN rail or panel using standard hardware. Ensure the operating temperature stays between 0 and 60 degrees Celsius to maintain performance. Use copper wire rated for 90 degrees Celsius with solid conductors from 22 to 14 AWG or stranded from 22 to 16 AWG. Connect the RS-232, NAP, or ControlNet port on channel A as needed for your network topology.

Maintenance & Reliability

Regularly inspect the module for signs of corrosion or damage, especially in high-humidity environments (5 to 95% relative humidity). The battery (Allen-Bradley 1769-BA) should be replaced only by authorized personnel. Following these steps helps extend the service life of the 1769-L32C and maintains its backup functionality.

Compatibility & Integration

The 1769-L32C integrates seamlessly with other CompactLogix controllers and I/O modules. It communicates via serial protocols and supports ControlNet networks. Use the RS-232 port for programming and diagnostics, the NAP port for network access, and ControlNet channel A for high-speed deterministic communication.

FAQs about the 1769-L32C

Q: What memory does the 1769-L32C have?

A: It has 750 KB of memory for user programs and configuration data.

Q: How many I/O modules can it support?

A: It supports up to 16 I/O modules in a maximum of three I/O banks.

Q: What communication ports are available?

A: It includes RS-232, NAP, and ControlNet channel A ports.

Q: What is the operating temperature range?

A: The range is 0 to 60 degrees Celsius.

Q: Is the 1769-L32C still in production?

A: It has been discontinued by the manufacturer. Please verify current lifecycle status and availability with Petro Auto Tech before ordering.

Q: What battery does it use?

A: It uses the Allen-Bradley 1769-BA battery for memory backup.

Product Support & Availability

The 1769-L32C is available from Petro Auto Tech, an industrial automation parts supplier. Contact our team to check stock and lead times. We can help you find the right CompactLogix processor for your application.