Networking; Eaton Breaker Panel System; Breaker Control Bus Addressing - Emerson E2 Installation And Operation Manual

3

Networking

3.1.

Eaton Breaker Panel System

The relationship between the E2 and the Eaton
Panel Breaker can be seen in Figure 3-1. The diagram
shows four Eaton Breaker Panels with two BCB mod-
ules per panel with a maximum of eight BCB modules
allowed per MODBUS port.
If the panel contains a single rail or only one BCB
module per panel, up to eight panels can be controlled
by an E2.
Terminate
NOTE: POLARITY
ON BCB
MODBUS
CONNECTORS
IS THE INVERSE
OF E2
WIRE + on E2
Connect the MODBUS
to LAN - on BCBs
shield to the chassis
WIRE - on E2
ground/earth bus of
to LAN + on BCBs
each panel
7
8 5
TERM
Panel 4 Panel 3
Figure 3-1 - E2 and Eaton Breaker Panel Layout with Example
Left/Right Rail Numbering
4 • Eaton Panel Breaker
1 2
Panel 1
6
3 4
Panel 2
3.2. Breaker Control Bus Address-
ing
Assign a unique address for each BCB on the LAN
address switches before the E2 can communicate reli-
ably. In the case of a two-rail panel, each rail has a
separate MODBUS physical address used for com-
munication: the physical address of the first rail will
be the device address visible to the user in Network
Services. The physical address of the second rail is
determined by taking the address of the first rail and
adding one. Always set the left rail as an odd number
and the right rail as an even number (odd + 1 or left
rail + 1) in order for it to display correctly in the E2.
For example, if the physical address of panel 1 is
1, (left rail = 1, right rail = 2), you will see the address
of the left rail in the Network Summary screen. In
Figure 3-1, the odd panel numbers 1,3,5, and 7 will
be visible on the Network Summary screen.
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
ON -> ON ->
1 2
1 1
2 2
3
3
4 4
5 5
6 6
7 7
8
8
ON -> ON ->
5 6
Figure 3-2 - BCB Address Configuration
The same BCB model is used
CAUTION!
for both Left and Right rails - there are
not separate BCB models for each rail. In
Figure 1-2, the BCB module for the Right rail is
mounted upside down from the Left rail, therefore
the address switch numbering and ON/OFF posi-
tions are reversed for Left and Right rail BCB
modules. Check the labeling on each BCB module
for the correct address switch numbering and
ON/OFF positions
.
1
1
2 2
3 3
4 4
5 5
6
6
7 7
8 8
ON ->
ON ->
3
4
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
ON ->
ON ->
7
8
026-1709 Rev 2 28-JUN-2011