Rockwell Automation 2090 Ultra3000 Installation Manual - Manual (Page 105)

Publication 2098-IN003E-EN-P — April 2004
Connecting Your Ultra3000 3-9
Grounding Your Ultra3000 All equipment and components of a machine or process system
should have a common earth ground point connected to their chassis.
A grounded system provides a safety ground path for short circuit
protection. Grounding your modules and panels minimize shock
hazard to personnel and damage to equipment caused by short
circuits, transient overvoltages, and accidental connection of
energized conductors to the equipment chassis. For CE grounding
requirements, refer to Meeting CE Requirements in Chapter 1.
Grounding Your System to the Subpanel
Figure 3.9
Chassis Ground Configuration (Multiple Ultra3000 Systems on One Panel)
IMPORTANT
To improve the bond between the Ultra3000 and
subpanel, construct your subpanel out of zinc plated
(paint-free) steel.
ATTENTION
!
The National Electrical Code contains grounding
requirements, conventions, and definitions. Follow
all applicable local codes and regulations to safely
ground your system. Refer to the illustration below
for details on grounding your Ultra3000. Refer to
Appendix B for the power wiring diagram for your
Ultra3000 drive.
Bonded ground bar
(optional)
Bonded cabinet
ground bus
Ground grid or power
distribution ground
Always follow NEC and
applicable local codes
Chassis ground Chassis ground
Chassis ground
Chassis ground