Rockwell Automation 1797-Series ControlNet Ex Media Plannng Installation Manual - Manual (Page 70)

Publication CNET-IN003A-EN-P - January 2006
3-28 Install a ControlNet Ex Media System
Install the 1797-BCNR
Module You can also use the 1797-BCNR FLEX Ex Redundant ControlNet
Barrier Module to interconnect between ControlNet coax and
ControlNet Ex networks. This module provides an alternative to
installing ControlNet coax and Ex fiber repeater modules.
Use the 1797-BCNR FLEX Ex ControlNet barrier module in Class I,
Divison 2 or Zone 2 safe areas, as shown in the figure.
Figure 3.1 ControlNet Coax to Ex System With 1797-BCNR FLEX Ex ControlNet
Barrier Module
To install the module:
1. Select the appropriate mounting location.
2. Mount the barrier module on Rockwell Automation part number
199-DR1 DIN rail.
WARNING
The 1797-BCNR barrier module cannot be used in an
intrinsically-safe environment after it has been
exposed to non-intrinsically-safe signals.
IMPORTANT
For complete installation instructions and
requirements, refer to the FLEX Ex Redundant
ControlNet Barrier Module Installation Instructions,
publication 1797-5.35.
.
.
.
Safe Area
ControlNet A
ControlNet B
Hazardous Area
ControlNet Ex Tap
(1797-TPR)
ControlNet Ex
Tap (1797-TPR)
ControlNet Ex
Adapter
ControlNet Barrier
PA
ControlNet Ex TAP
(1797-TPR)
ControlNet Ex Tap
(1797-TPR)