Rockwell Automation 1394 SERCOS Interface Multi-Axis Motion Control System Installation Manual - Manual (Page 63)

Publication 1394-IN002B-EN-P — February 2004
Connecting Your 1394 SERCOS Interface System 3-9
Grounding Your 1394
SERCOS Interface System We recommend that all equipment and components of a machine or
process system 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 minimizes
shock hazards 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 Chapter 1.
Grounding Your System to the Subpanel
This section provides examples for connecting the chassis ground to
your 1394 and the subpanel. The 1394 system module provides a
grounding bar as a common point of chassis ground for the system
and axis modules, as shown in Figure 3.6.
Figure 3.6
1394 Ground Wire Connections
The system module single point bond bar wires to the bonded system
ground bus on the sub-panel. Refer to Figure 3.7 for grounding
configuration examples.
IMPORTANT
To improve the bond between your 1394 and the
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 Appendix B for the
1394 interconnect diagrams.
PE1 PE1 PE1 PE1
To bonded cabinet ground bus
or power distribution ground
System module
single point bond bar
1394 Front View