Rockwell Automation 1786-series ControlNet Coax Media Planning and Installation Guide - Manual (Page 36)

36 Publication CNET-IN002B-EN-P - June 2010
Chapter 2 Plan a ControlNet Coax Media System
Wiring External to Enclosures
Cables that run outside protective enclosures can be relatively long. To
minimize cross-talk from nearby cables, it is good practice to maintain
maximum separation between the ControlNet cable and other potential noise
conductors. You should route your cable by using these guidelines.
Wiring Internal to Enclosures
Cable sections that run inside protective equipment enclosures are relatively
short. As with wiring external to enclosures, you should maintain maximum
separation between your ControlNet cable and Category-1 conductors.
When you are running cable inside an enclosure, route conductors external to
all raceways in the same enclosure, or in a raceway separate from
Category-1 conductors.
Cable Routing Distance - Wiring External to Enclosures
Cable in a contiguous metallic wireway or
conduit? Route your cable at least From noise sources of this strength
Yes 0.08 m (3 in.) Category-1 conductors of less than 20A
0.15 m (6 in.) AC power lines of 20A or more, up to 100 KVA
0.3 m (12 in.) AC power lines greater than 100 KVA
No 0.15 m (6 in.) Category-1 conductors of less than 20A
0.3 m (12 in.) AC power lines of 20A or more, up to 100 KVA
0.6 m (24 in.) AC power lines greater than 100 KVA
Cable Routing Distance - Wiring Internal to Enclosures
Route your cable at least this distance From noise sources of this strength
0.08 m (3 in.) Category 1 conductors of less than 20 A
0.15 m (6 in.) AC power lines of 20 A or more, up to 100 KVA
0.6 m (24 in.) AC power lines greater than 100 KVA