Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 43)

Chapter 2
System Installation Recommendations
2–4
The figure below shows you how to run ground connections from the chassis
to the ground bus.
SLC 500 Controller Only
#8 AWG
Wire
Earth
Ground
Ground Bus #10 AWG Wire
SLC 500 Controller with 2-slot Expansion Chassis
#8 AWG
Wire
Earth
Ground
Ground Bus
#10 AWG Wire
Chassis Mounting Tabs
Chassis Mounting Tabs