The Allen-Bradley 1746-A10, also cataloged as the 1746-A10 SLC 500 10 Slot Chassis, operates as a dedicated hardware component for mounting and connecting SLC 500 PLC modules within the SLC 500 control platform.

Model Configuration Details

The 1746-A10 is a 10-slot chassis designed for installation of Allen-Bradley SLC 500 series modules. The chassis provides the physical mounting structure and backplane connection required for processor, I/O, and communication modules.

Hardware Specifications

PLC Backplane and Module Integration

The SLC 500 chassis provides the internal backplane structure required for communication between installed PLC modules. The backplane connection supports module-to-module data exchange and distributes system power according to the requirements of installed components.

For SLC 500 system expansion, I/O density scaling depends on chassis selection, processor capability, and installed module configuration. Correct module placement and power loading calculation are required during system design.

Ordering Information

The package configuration includes:

• 1 x Allen-Bradley 1746-A10 SLC 500 10 Slot Chassis

Additional SLC 500 system components are installed separately according to application requirements:

• SLC 500 processor modules
• SLC 500 I/O modules
• Communication interface modules
• Power supply modules

Field Installation Guidelines

Chassis Mounting

• Install the chassis on a stable panel surface with proper mechanical support.
• Maintain sufficient clearance for module insertion and removal.
• Verify chassis alignment before securing mounting hardware.

Module Installation

• Confirm module compatibility with the SLC 500 backplane before installation.
• Insert modules firmly into the chassis slots.
• Remove system power before installing or removing modules.

Electrical Connection

• Verify the installed power supply capacity matches the total module load.
• Inspect backplane connectors for contamination or mechanical damage.
• Use proper grounding practices for the control cabinet.

Frequently Asked Questions

• What is the main function of the 1746-A10 chassis?

The 1746-A10 provides a 10-slot mounting frame and backplane connection structure for Allen-Bradley SLC 500 PLC modules.

• How many modules can be installed in the 1746-A10?

The chassis supports up to 10 SLC 500 modules installed in available chassis slots.

• Is the 1746-A10 a processor module?

No. The 1746-A10 is a passive chassis assembly used for mounting and connecting SLC 500 modules.

• Does the chassis provide PLC program memory?

No. Program processing and memory functions are provided by compatible SLC 500 processor modules.

• Can SLC 500 I/O modules be installed directly into this chassis?

Yes. Compatible SLC 500 I/O modules can be installed into the available chassis slots.

• Does the chassis require separate power supply selection?

Yes. The power supply must be selected according to the installed processor, I/O, and communication module load.

• Is the 1746-A10 compatible with other Allen-Bradley PLC families?

The chassis is designed specifically for the SLC 500 platform and should be matched with compatible modules.

• What should be checked before replacing an existing chassis?

Verify slot configuration, installed module compatibility, power requirements, and backplane connection condition before replacement.