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2-10
Connecting Your 1394 SERCOS Interface System
Grounding Your 1394
SERCOS interface System
Publication 1394-5.20 — July 2001
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.
Grounding your System to the Subpanel
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 figure below for
details on grounding your system and axis modules. Refer to
Appendix B for interconnect information.
Figure 2.7
PE Safety Ground Configuration with Multiple 1394 Systems on One Panel
1394C-SJTxx-x System Modules
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
Bonded ground bar
(optional)
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
System module
single point
bond bar
Bonded cabinet ground bus
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
All ground wiring must
comply with local codes
SERCOS System Module
Status
DANGER
RISK OF ELECTRICAL SHOCK. HIGH VOLTAGE MAY
EXIST UP TO FIVE MINUTES AFTER REMOVING POWER.
Always follow NEC and
applicable local codes
Ground grid or power
distribution ground
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