Allen-Bradley 1746-A4 4-Slot I/O Chassis

AB 1746-A4 is a 4-slot I/O chassis manufactured by Rockwell Automation (formerly Allen-Bradley) for use with their SLC 500 programmable logic controllers (PLCs).

Function:
The AB 1746-A4 acts as an expansion module for the SLC 500 PLC system.
It provides additional slots for installing I/O modules, which allow the PLC to interface with various sensors and actuators in a machine or process.

Key Characteristics:
Number of Slots: 4 slots for accommodating I/O modules.
Compatible Modules: Works with a wide range of Allen-Bradley SLC 500 I/O modules for digital inputs, digital outputs, analog inputs, and analog outputs.
Physical Specifications:
Dimensions (approximate): 6.73 in. x 6.97 in. x 5.71 in. (height x width x depth)
Mounting tabs for secure installation.

Applications:
Expanding the I/O capabilities of an SLC 500 PLC system when the base unit's built-in I/O is insufficient.
Used in various industrial automation applications like:
Factory automation
Machine control
Process control
Data acquisition

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