Rockwell Automation 57C329 Remote I/O Communications, AutoMax - Manual (Page 47)

3Ć21
REMOTE HEAD
OR
RAIL
GROUNDING STUD
GROUNDING STUD
Figure 3.19 Ć Grounding Stud Location
Step 4. Connect a green wire from earth ground to either stud on
the Remote I/O Head housing. For proper termination, a
lug should be used. A star washer (toothed lock washer)
should be used under the lug to ensure effective
grounding to the Remote I/O Head.
If the Remote I/O Head is to be mounted on a properly
grounded subĆpanel, remove all paint, coating, and
corrosion where the Remote I/O Head is to be mounted.
(Paint on the mounting surface will prevent good electrical
contact.) Use a star washer between the subĆpanel and
the Remote I/O Head for a good electrical connection.
As I/O Rails are installed, grounding should be run from
each rail to this common ground (see figure 3.20).