Application Considerations - Rockwell Automation Allen-Bradley ControlNet 1734-ACNR User Manual

C-20 Determine Your ControlNet Media Requirements

Application Considerations

Publication CNET-UM001C-EN-P - November 2005
The guidelines in this section 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. When planning your cable
system there are certain installation considerations depending on your
application. There are three categories of conductors:
Table C.3 Conductor Categories
Category Includes
• ac power lines
1
• high-power digital ac I/O lines
• high-power digital dc I/O lines
• power connections (conductors) from motion drives to motors
• analog I/O lines and dc power lines for analog circuits
2
• low-power digital ac/dc I/O lines
• low-power digital I/O lines
• ControlNet communication cables
• low-voltage dc power lines
3
• communication cables to connect between system components
within the same enclosure
These guidelines apply only to noise coupling. Intrinsic
ATTENTION
safety requirements for cable mounting are of the highest
priority.