Rockwell Automation 1786-series ControlNet Coax Media Planning and Installation Guide - Manual (Page 35)

Publication CNET-IN002B-EN-P - June 2010 35
Plan a ControlNet Coax Media System Chapter 2
Follow Application and
Installation Guidelines The following guidelines coincide with the guidelines for the installation of
electrical equipment to minimize electrical noise inputs to controllers from
external sources in
IEEE standard 518-1982.
The categories of conductors are shown in the table.
General Wiring Guidelines
Follow these guidelines for wiring all ControlNet cables.
•
If cable must cross power feed lines, it should do so at right angles.
•
Route at least 1.5 m (5 ft) from high-voltage enclosures, or sources of
rf/microwave radiation.
•
The bend radius for all fixed-tap drop cables is 1.5 in.
•
If the conductor is in a metal wireway or conduit, each section of the
wireway or conduit must be bonded to each adjacent section so that it
has electrical continuity along its entire length, and must be bonded to
the enclosure at the entry point.
See the table for more information on general wiring guidelines.
Category Includes
1
•
AC power lines
•
High-power digital AC I/O lines
•
High-power digital DC I/O lines
•
Power connections (conductors) from motion drives to motors
2
•
Analog I/O lines and DC power lines for analog circuits
•
Low-power digital AC/DC I/O lines
•
Low-power digital I/O lines
•
ControlNet communication cables
3
•
Low-voltage DC power lines
•
Communication cables to connect between system components
within the same enclosure
Publication Pub. No.
Industrial Automation Wiring and Grounding Guidelines 1770-4.1
System Design for Control of Electrical Noise GMC-RM001