PLC System Spare Parts - New & Discontinued

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For decades, the Allen-Bradley SLC 500 series has been a cornerstone of industrial automation, earning a reputation for its rugged design and exceptional reliability. While these systems continue to perform, sourcing the necessary components to maintain them has become a significant challenge.

Our purpose is to provide the new, professionally and obsolete PLC spare parts you need to extend the life of your SLC 500 systems. We help you minimize downtime, avoid costly system-wide upgrades, and keep your production lines running at peak efficiency.

The Enduring Strength of the SLC 500 Platform

The power of the SLC 500 lies in its simple, modular architecture, which allows for highly customized and easily maintainable control systems. A complete system is built from three core component types:

Processors (1747 Series): As the "brain" of the operation, the processor executes your control logic. Key models like the SLC 5/03, 5/04, and 5/05 belong to the 1747 series.
Input/Output Modules (1746 Series): These modules are the system’s connection to the real world, interfacing with sensors, switches, and motors. All native I/O modules for the SLC 500 platform are part of the 1746 series.
Chassis and Power Supply: The chassis securely houses the processor and I/O modules, while the power supply provides stable, regulated power to the entire backplane.

This design ensures that a single faulty module can be swapped out quickly, simplifying repairs and maintenance.

Featured Components for System Maintenance

Our inventory includes the critical Allen-Bradley parts required to keep your system performing. The components featured here are native to the SLC 500 platform and install directly into a 1746 chassis.

1747-L542 Processor: A powerful SLC 5/04 processor that offers fast instruction speeds and generous memory for complex applications. It communicates over DH+ networks, making it a reliable choice for coordinated control.
1747-SDN DeviceNet Scanner Module: This module installs directly in the SLC 500 chassis and acts as a master on a DeviceNet network. It allows the processor to seamlessly control distributed I/O, drives, and other smart devices, extending the system's capabilities.

Explore our full range to find these and many other genuine Allen-Bradley PLC spare parts. We offer dependable solutions backed by an industry-leading warranty.

3 FAQs about Sourcing SLC 500 Parts

Q1. Can I still find parts for my older SLC 500 system?

Yes. We specialize in supporting mature PLC systems. Our inventory includes a comprehensive range of new and obsolete parts for the SLC 500, including the 1746 and 1747 series.

Q2. How reliable are your Allen-Bradley parts?

Extremely reliable. Every component undergoes a rigorous, multi-step testing and restoration process to ensure it meets or exceeds original factory specifications. For your peace of mind, all our parts are backed by a comprehensive warranty.

Q3. How do I identify the correct module for my system?

Check the part number printed on the side of the module. Native SLC 500 processors are in the 1747 series, and I/O modules are in the 1746 series. If you're unsure, our technical experts are ready to help you confirm the exact part number for guaranteed compatibility.