Rockwell Automation 1797-ACNR15 ControlNet Ex Redundant Media Adapter - Manual (Page 16)

16 ControlNet Ex Redundant Media Adapter
Publication 1797-5.14 - March 2010
Description of the ControlNet Ex System Diagrams
A maximum of 48 ControlNet Ex nodes may be connected together by 250 m
of coax cable and 48 taps. The distance increases to 1000 m when you use
only 2 taps. See the table below for more information.
The fiber media of the 1797-RPFM can be installed in a hazardous location
(Zone 0, 1 or 2; Class I, Zones 0, 1, and 2; Class I, Division 1 and 2; Class II,
Division 1 and 2; Class III, Division 1 and 2) to connect two 1797-RPFM
modules or they can be installed through different locations into the
nonhazardous location to connect the 1797-RPFM with any approved
associated apparatus.
All cables and fiber media that are not light blue must be marked as IS using
the 1797-EXMK marking kit or other locally approved IS identification or
segregation method.
During the installation of the ControlNet Ex system, all metallic parts must be
isolated to prevent an earth connection (high voltage withstanding of isolating
material must be > 500V ac).
System
Diagram Name Catalog
Number Catalog Name Description
1797-RPA 1797-RPA ControlNet Ex
Modular Repeater
Adapter Represents one ControlNet Ex
node and must be connected
to a coax trunk cable by
1797-TPx
1797-RPFM 1797-RPFM ControlNet Ex Fiber
Repeater Module,
Medium Distance Allows connection of a
maximum of two devices per
1797-RPA and is powered
directly by 1797-RPA
1797-ACNR15 1797-ACNR15 Redundant Media
ControlNet Ex
Adapter Represents one ControlNet Ex
node and must be connected
to a coax trunk cable by
1797-TPx - each one with two
redundant output channels
that are connected to different
ControlNet Ex networks (coax
cables and 1797-TPx)