Rockwell Automation 1336T Wiring and Grounding Guide, (PWM) AC Drives - Manual (Page 59)

Rockwell Automation Publication DRIVES-IN001M-EN-P - March 2014 59
Best Practices Chapter 4
Hardware
You can mount the drive and/or mounting panel with either bolts or welded
studs.
Figure 21 - Stud Mounting of Ground Bus or Chassis to Back Panel
Figure 22 - Bolt Mounting of Ground Bus or Chassis to Back Panel
If the drive chassis does not lay flat before the nuts/bolts are tightened, use
additional washers as shims so that the chassis does not bend when you tighten
the nuts.
Back Panel
Welded Stud
Paint-free Area
Nut
Flat Washer
Mounting Bracket or
Ground Bus
Star Washer
If the mounting bracket is coated with a non-conductive
material (anodized, painted, and so on), scrape the material
off around the mounting hole.
Flat Washer
Back Panel
Bolt
Paint-free Area
Nut
Flat Washer
Mounting Bracket or
Ground Bus
Star Washer
Nut
Flat Washer
Star Washer
Star Washer
If the mounting bracket is coated with a non-conductive
material (anodized, painted, or other), scrape the material off
around the mounting hole.