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    Apter Power supplies verified Allen-Bradley ControlNet processors to help maintain continuous operation across legacy automation architectures.

1769-L32C

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The Allen-Bradley 1769-L32C CompactLogix Controller is an integrated automation solution engineered to bridge the gap between high-performance control and cost-effective machine-level applications.
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Technical specifications for 1769-L32C

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1769-L32C
  • Product Family:
    CompactLogix
  • Product Type:
    CompactLogix Controller
  • Stock:
    1
  • Available Memory:
    750 KB
  • Number of Tasks Supported:
    6
  • Number of Local I/O Modules Supported:
    16 I/O modules
  • Number of I/O banks, max:
    3 banks
  • Power dissipation:
    4.21 W
  • Wiring category:
    2 on communication ports
  • Weight:
    0.32 kg
  • Estimated shipping dimensions:
    11.8x5x8.7cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Communication & Connectivity Safety & Compliance

Features:

  • Built-in ControlNet Communication Port for High-Speed Deterministic Networking
  • Dual Protocol Support via Integrated RS-232 Serial Interface (System or User)
  • Compact 1769 Backplane Integration Powered Directly at 650 mA (5V DC) and 40 mA (24V DC)
The Allen Bradley 1769-L32C operates as the primary Programmable Automation Controller within a CompactLogix system, delivering central processing power and integrated network connectivity. It draws power directly through the 1769 backplane bus—requiring 650 mA at 5V DC and 40 mA at 24V DC—to maintain continuous execution of control logic and communication services. Equipped with a built-in ControlNet port and an RS-232 serial port (supporting both system and user protocols), the 1769-L32C manages real-time data flow between localized processing tasks and high-speed distributed networking without requiring additional communication expansion cards.

The 1769-L32C executes essential control logic common to the entire I/O system, making it the critical intelligence node that directly dictates the normal operation of all connected field devices. Exactly one 1769-L32C controller is permitted per CompactLogix system, and it must always be installed in Slot 0 (the leftmost position of the local bank). To guarantee proper backplane signal integrity and operating voltage, the 1769-L32C must be positioned within four module slots of the system power supply, while standard I/O modules can reside up to eight slots away.

For Distributed I/O applications, the 1769-L32C coordinates remote I/O banks across a ControlNet network. In the programming software's I/O Configuration folder, engineers establish network communication by adding ControlNet adapters and remote I/O modules directly beneath the 1769-L32C. Using this hierarchical structure, the system organizes modules into a parent/child tree and branch configuration to systematically monitor device health, update I/O tags, and report communication events.

The 1769-L32C Allen Bradley CompactLogix Controller may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen Bradley 1769-L32C CompactLogix Controller Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen Bradley 1769-L32C CompactLogix Controller Specs

General

  • Manufacturer Allen Bradley
  • Model 1769-L32C
  • Condition New Original ready stock
  • Product Family 1769-L35E,1769-L32E
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Distributed Control Systems: Ideal for managing remote, separated sub-stations (e.g., Location A and Location B) interlocking over a supervisory network.
  • Machine Automation: Frequently used in assembly lines, packaging machinery, food and beverage processing, and material handling systems.
  • Process Skids: Well-suited for modular industrial equipment like water treatment systems, pumping stations, and environmental control chambers.
  • SCADA Integration: Acts as an intelligent data concentration point, passing local I/O telemetry up to central supervisory systems.
  • Onboard ControlNet Port: Delivers deterministic, high-speed scheduled messaging for time-critical I/O and peer-to-peer data sharing.
  • Onboard Serial RS-232 Port: Supports DF1, DH-485, and ASCII protocols up to 38.4 Kbps for HMIs or legacy device programming.
  • Local Module Expansion: Connects up to 16 local 1769 Compact I/O modules directly onto the chassis rail.
  • Network Bridging: Can interface with a [DeviceNet Scanner Module to command low-level field sensors and actuators.
  • EtherNet/IP Access: Requires external bridging hardware, like a 1761-NET-ENI module, for standard messaging over Ethernet networks.
  • Hazardous Environment Ratings: Certified for use in Zone 2 industrial environments when housed inside an enclosure protecting to at least IP54.
  • Standard-Side Flexibility: Operates standard automation tasks alongside functional safety systems, allowing for online editing, forcing, and basic HMI data extraction.
  • Electrical Transient Safeguards: Requires protective measures to block transient electrical disturbances from exceeding the rated voltage by more than 40%.
  • System Interlocking Compatibility: Capable of reading and transmitting data safely across ControlNet paths to specialized safety controllers like GuardLogix.
Description
The Allen Bradley 1769-L32C CompactLogix Controller is a high-performance programmable automation controller designed to tackle deterministic networking and real-time control challenges in medium-scale industrial architectures. Specifically, the 1769-L32C solves communication bottleneck and integration complex issues by incorporating a built-in ControlNet port alongside an RS-232 serial port that supports both system and user protocols. Powered directly through the backplane with a current consumption of 650 mA at 5V DC and 40 mA at 24V DC, the 1769-L32C eliminates the necessity for dedicated external network cards, thereby reducing hardware footprint, panel space, and total cost of ownership.

In terms of application domains, the 1769-L32C CompactLogix Controller is ideally suited for automated manufacturing lines, packaging machinery, material handling systems, and process control applications that rely on synchronized, high-speed distributed control networks. The 1769-L32C allows system integrators to configure distributed I/O across a ControlNet network seamlessly. Within the control programming software, engineers structure the system by adding ControlNet adapters and remote I/O modules directly beneath the 1769-L32C within the I/O Configuration folder, organizing devices into a clear parent/child tree and branch hierarchy for structured data transmission.

For physical installation and hardware layout, strict positioning rules must be followed to maintain the operational integrity of the 1769-L32C controller. The 1769-L32C must always be installed as the leftmost module (Slot 0) in the CompactLogix system, and only one 1769-L32C controller is permitted per system layout. To ensure proper voltage regulation, the 1769-L32C must be located within four module slots of the system power supply, whereas standard I/O modules can be placed up to eight modules away. Furthermore, every additional expansion I/O bank requires its own dedicated power supply, and the backplane bus must always be terminated with a 1769-ECR (Right End Cap) or 1769-ECL (Left End Cap).
Revisions

Revision Part #

Also known as

1769-L32C Ser A
1769-L32C/A, Series A, Rev A
Alternative Names
1769L32C I769-L32C I769L32C 1769-L31 1769-L32E 1769-L35CR 1769-L35E
Technical notes
The 1769-L32C CompactLogix controller relies on precise backplane current consumption, consuming 650 mA at 5V DC and 40 mA at 24V DC, to maintain its internal operation and data processing tasks.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the Allen-Bradley 1769-L32C CompactLogix Controller used for?
The Allen-Bradley 1769-L32C CompactLogix Controller is designed for medium-sized industrial automation systems that require fast and deterministic communication. It is commonly used to control distributed I/O devices while maintaining stable and synchronized data transmission across the production network.
How does the 1769-L32C improve network reliability?
The controller minimizes communication delays and reduces the risk of packet collisions on ControlNet networks. This ensures that time-sensitive control signals are delivered consistently, making it suitable for applications requiring precise synchronization.
Is the 1769-L32C suitable for motion control applications?
Yes. The deterministic communication provided by the integrated ControlNet interface makes the 1769-L32C an excellent choice for synchronized machine motion, coordinated production equipment, and real-time monitoring systems.