- Seven-slot modular chassis for Allen-Bradley SLC 500 systems
- Panel-mount enclosure hardware with an integrated SLC backplane
- Officially discontinued with no planned Rockwell Automation replacement
The Allen-Bradley 1746-A7 provides seven module slots for a modular SLC 500 control system.
It accepts the documented SLC processor or I/O adapter, power supply, communication modules, and compatible 1746 I/O modules.
Verify series, grounding, cabinet clearance, backplane load, power supply, slot plan, and interconnect cables before replacement or migration.
The Allen-Bradley 1746-A7 SLC 500 7-Slot Chassis may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1746-A7 SLC 500 Seven-Slot Chassis Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Mount the chassis on a bonded conductive backpanel
- Install one compatible SLC power supply on the chassis left side
- Use the documented processor or I/O adapter position and slot plan
- Calculate 5.1 V DC and 24 V DC load for every installed module
- Keep demand within both chassis and selected power-supply limits
- Recalculate the load whenever modules or communication adapters change
- Maintain documented enclosure clearance and ventilation
- Use correct grounding hardware and protective-earth bonding
- Inspect backplane connectors, latches, mounting tabs, and chassis alignment
- Material-handling machines using modular SLC 500 I/O
- HVAC and building-service control panels retaining SLC 500
- Small process and assembly systems requiring seven local module slots