1768-L45 | Allen-Bradley CompactLogix Processor Module

Product Overview

The Allen-Bradley 1768-L45 serves as the central processing unit for CompactLogix control systems. This processor module executes control logic, manages motion control, and handles communication tasks for small to mid-sized applications. It supports up to 4 local 1768 I/O modules and up to 30 remote 1769 I/O modules, providing scalable control architecture. The unit consumes 48 Watts of power and delivers 2 Amps of backplane current to support local modules. We supply this item as a 100% Brand New, factory-sealed unit.

Part Number Breakdown

• 1768: Identifies the CompactLogix 1768 platform.

• L: Denotes the Logic processor category.

• 45: Specifies the specific series and performance tier.

Technical Specifications

Engineering Advantages

Scalable Hybrid Architecture
The 1768-L45 bridges the gap between the 1768 and 1769 form factors. You can connect up to 4 high-performance 1768 modules directly to the processor for specialized tasks like analog processing or communication. Additionally, the processor controls up to 30 remote 1769 I/O modules over a network, allowing you to distribute I/O closer to the machine while keeping the processor in a protected panel location.

Efficient Power Management
This processor manages power distribution efficiently, providing 2 Amps of current at 24 Volts to the local backplane. This capacity supports multiple 1768 expansion modules without requiring external power supplies for the local rack. The unit itself consumes only 48 Watts, reducing the thermal load inside your enclosure and minimizing the need for active cooling.

Ruggedized for Industrial Duty
The 1768-L45 operates reliably in temperatures ranging from 0°C to 60°C. It withstands operating shock up to 30 G, making it suitable for applications involving heavy machinery or frequent vibration. The open-style enclosure mounts securely using #8 or M4 screws with a torque of 1.16 Nm, ensuring a stable connection in dynamic environments.

FAQs

Q: How many I/O modules can the 1768-L45 control?
A: The processor supports a maximum of 4 local 1768 I/O modules plugged directly next to it. It also supports up to 30 remote 1769 I/O modules connected via communication network, organized into a maximum of 3 I/O banks.

Q: Does the 1768-L45 power the local modules?
A: Yes. The processor supplies 2 Amps of backplane current at 24 Volts. This power feeds the local 1768 modules, eliminating the need for a separate power supply module in the local rack for low-power configurations.

Q: What type of screws are required for mounting?
A: You should use #8 or M4 mounting screws. Apply a torque of 1.16 Nm to ensure the processor locks securely into the DIN rail or panel sub-panel without damaging the housing.

Q: Can I use 1769 modules directly next to the 1768-L45?
A: No. The 1768-L45 local bus is designed specifically for 1768 modules. You must use a communication interface module to connect 1769 I/O modules remotely.