Product Description:

The Allen-Bradley 1746-A4 is a 4-slot chassis designed for use with the SLC 500 family of programmable logic controllers (PLCs).¹ This chassis provides the physical backplane and connections for up to four 1746 series I/O modules.² It's a key component for building small to medium-sized control systems using the SLC 500 platform.

While the SLC 500 family is obsolete from Rockwell Automation, DD Parts Solution may have available stock (new old stock or used/refurbished) to support existing installations. Contact us for current availability and pricing.

Key Features (Based on original documentation—subject to limitations due to obsolescence):

• 4 I/O Slots: Accommodates up to four 1746 series I/O modules.³
• Backplane Connectivity: Provides the necessary connections for communication between the processor and I/O modules.
• Modular Design: Allows for flexible system configuration based on application needs.
• Obsolete (from Rockwell Automation): No longer manufactured or actively supported by Rockwell Automation.
• Available at DD Parts Solution (Potentially): Contact us for current stock.

Technical Specifications (Consult official Rockwell documentation for precise details—subject to limitations due to obsolescence):

• Product Type: I/O Chassis
• Catalog Number: 1746-A4
• Number of Slots: 4
• Compatible I/O Modules: 1746 series
• Mounting: Panel mount
• Status: Obsolete (from Rockwell Automation), potentially available at DD Parts Solution

Applications (Obsolescence caveats apply):

• Existing installations using SLC 500 controllers and 1746 I/O.
• Not recommended for new applications.

Why contact DD Parts Solution for the 1746-A4?

• Support for Legacy Systems: We can help you maintain your existing SLC 500 systems with available chassis and other components.
• Potential for Available Stock: We may have new old stock (NOS) or used/refurbished 1746-A4 chassis available.
• Expertise in Legacy Automation: We understand the challenges of supporting older systems and can provide guidance.
• Migration Planning: We can assist you in planning a migration to a more modern platform if you are considering upgrading.