ControlNet Ex Modular Repeater Adapter & Fiber Repeater Module
15
Publication
1797-IN015G-EN-P - August 2017
Describing the ControlNet Ex System Diagram
A maximum of 48 ControlNet Ex nodes may be connected together by 250 m
(820 ft) of coax cable and 48 taps. The distance to increases to 1000 m (3280
ft) 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).
IMPORTANT
Make sure all fiber modules are attached and secured prior to
applying intrinsically safe power to the adapter. Failure to do
so may cause damage to the adapter and modules.