Rockwell Automation 5000,D50006.2.10 PI INSTALLATION MANUAL - Manual (Page 26)

Chapter 2
Mounting the Components
2-4
c. Attach the ground bus to the rack using the two drilled
mounting holes. One connection is shown below.
Copper
ground
bus
#10Ć32
screw
Star washer
Rack
13235 Star washer
4. Repeat this procedure for each component you mount:
a. Position the component on the spot you have prepared for it on
the rack.
b. Attach the component using #10-32 screws and lock washers.
Do not tighten the screws yet (you will tighten the screws after
you ground the components).
Star
washers
#10Ć32 screw
Mounting bracket
Rack
19779