Wiring; Bcb Wiring; Lan/Power Connectors; Power On Indicators - Emerson E2 Installation And Operation Manual

2

Wiring

2.1.

BCB Wiring

Two four-pin combination LAN/Power Connec-
tors are located on each BCB (Figure 2-1). It also has
the "Breaker Terminations" for plugging into the
Eaton Breaker Panel and the "LAN Address Switch-
es" used to set the MODBUS address (1 to 8) for com-
munication with E2. Three recessed LEDs (RUN,
LAN, PWR) are located on the BCB that indicate the
communication and power status of the BCB.
LAN Address
Switches
1 2 3 4 5 6 7 8
Breaker
Termination
Figure 2-1 - BCB Connectors

2.1.1. LAN/Power Connectors

A 24VAC transformer is needed to power the BCB
modules (see Table 2-1). One 75VA transformer can
power up to four panels, eight BCB modules, if they
are in the same area, or one 75VA transformer can be
used per panel.
Primary Color
Transformer Model: TR75VA005
COM Black
120V White
208V Red
240V Orange
480V Grey
Table 2-1 - Transformer lead Colors/Supply Voltage
2 • Eaton Panel Breaker
LAN/Power
Connectors
RUN LAN PWR
Status LEDs
Secondary Color
24 VAC Yellow
COM Yellow-
White
Primary Color
Transformer Model: TR75VA003
COM Black
277V Brown
Table 2-1 - Transformer lead Colors/Supply Voltage
The secondary leads of the 24 VAC transformer
should have one wire connected to the 24 V terminal
of the BCB modules, and the other secondary wire
connected to the 24 Com terminal of the BCB mod-
ules. The side of the 24VAC secondary connected to
the 24 Com terminals of the BCB should also be con-
nected to the chassis ground/earth bus of the panel.
It is recommended to use 16 AWG wire with 600
V isolation jacket for interconnecting BCB modules
24VAC power with a maximum length of 150 feet. If
the BCB modules are mounted in closer proximity
such that the total power length is 50 feet or less, then
18 AWG conductors may be substituted.
Figure 2-2 - BCB LAN and Power Connectors
2.2.

Power ON Indicators

2.2.1. BCB Status LEDs

Once power is applied to the Eaton Breaker Panel
and each connected BCB, the "PWR" (Power) LED
on each BCB should be illuminated red. If the Power
LED does not illuminate, verify the power supply and
the proper wiring terminations on each BCB. Confirm
all four-pin connectors are properly wired.
PWR
The PWR LED is illuminated ON solid when the
BCB is powered up (24VAC). If the PWR LED is
OFF, the other LEDs will be OFF. Verify that the cir-
cuit breaker is functional and check wiring to ensure
that the BCB is receiving power.
Secondary Color
24VAC Yellow
COM Yellow-
White
24 V
24 Com
LAN+
LAN-
24 V
24 Com
LAN+
LAN-
026-1709 Rev 2 28-JUN-2011