Rockwell Automation Publication 2711P-UM006A-EN-P - November 2010
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Chapter
7
Terminal Connections
Chapter Objectives
This chapter provides topics on network and device connections.
Wiring and Safety
Guidelines
Use publication NFPA 70E, Electrical Safety Requirements for Employee
Workplaces, IEC 60364 Electrical Installations in Buildings or other applicable
wiring safety requirements for the country of installation when wiring the
devices. In addition to the NFPA, these are other guidelines to follow:
•
Route communication cables to terminal by a separate path from incoming
power.
•
Cross power and communication lines at right angles if they must cross.
•
Communication lines can be installed in the same conduit as low-level DC
I/O lines (less than 10V).
•
Shield and ground cables appropriately to avoid electromagnetic
interference (EMI).
Grounding minimizes noise from EMI and is a safety measure in electrical
installations.
For more information on grounding recommendations, refer to the National
Electrical Code published by the National Fire Protection.
Topic
Page
DH-485/DH+ Communication Module
IMPORTANT
Do not run signal wiring and power wiring in the same conduit.
