Section 3: Basic Wiring Rules; Section 4: Ethernet Communications Adapter Module Connections; Section 5: Jumpers And Indicator Leds - Eaton NRX Series Installation Instructions Manual

Instruction Leaflet IL01301052E
effective May 2012

Section 3: Basic wiring rules

The ECAM communication wiring requires a shielded Ethernet cable.
Please refer to the IMPACC™ wiring specification TD17513 for detailed
wiring instructions.
N otee: For technical documents please go to www.eaton.com and search for
"TD17513" .
Section 4: Ethernet Communications Adapter
Module Connections
• WARNING
ALL APPLICABLE SAFETY CODES, SAFETY STANDARDS, AND SAFETY
REGULATIONS MUST BE STRICTLY ADHERED TO WHEN INSTALLING,
OPERATING, OR MAINTAINING THIS EQUIPMENT. FAILURE TO COMPLY
COULD RESULT IN DEATH, BODILY INJURY, OR PROPERTY DAMAGE.
For installation specifics, refer to Figures 10 and 11 on pages 5 and
6 respectively for wiring diagrams, as well as pin out Table 1 (power
connections) and Table 2 (Ethernet connections) on this page.
Table 1. Power Connector Pin-Outs
Pin Number Input Signal
1 24 Vdc +
2 24 Vdc -
3 Control signal common
4 Control open signal
5 Control close signal
j
Module power uses a 5-pin input connector. Power requirement is 24 Vdc, 10 watts.
Table 2. Ethernet Connector Pin-Outs
RJ45 Pin Number 10/100 Base-T Signal
1 Transmit +
2 Transmit -
3 Receive +
Unused
4
Unused
5
Receive -
6
Unused
7
Unused
8
j The Ethernet connection uses an 8-pin grounded RJ-45 connector. A shielded Ethernet cable is
recommended.
4 EATON CORPORATION www.eaton.com
j
j
Installation Instructions for Series NRX
Ethernet Communications Adapter

Section 5: Jumpers and indicator LEDS

Refer to Figure 9 to become familiar with specific jumper and LED
locations on the Ethernet Communications Adapter Module.
Figure 9. ECAM Communications Adapter Module (Front View
Closeup)
MicroController LED (Status)
The Status indicator will be flashing green when the module is
powered up and the microprocessor is executing instructions.
On power-up the Status LED will be red for approximately 45
seconds while the module boots. When the Series NRX Ethernet
Communications Adapter Module is connected to a Series NRX trip
unit for the first time, this LED will alternately flash red and green to
signal a learning process between both units. This automatic process
will take approximately 20 seconds and occurs only once during
the initial startup. The LED will also flash red if the module is not
connected or unable to communicate with a Series NRX trip unit.
Ethernet Control Jumper
The Ethernet Control jumper provides the user with a means of
enabling or disabling remote communication control commands to the
Series NRX trip unit. With the jumper placed in the "Enable" position,
remote control commands, such as open, close and reset can be
executed. With the jumper in the "Disable" position, commands will
not be accepted.
Source/residual ground selection jumper
The Source Ground jumper selects the protection configuration for
Series NRX trip units with ground fault protection or ground fault alarm
functionality. Consult the Series NRX trip unit instructions for further
information on ground sensing. This jumper is not applicable for non-
ground fault style trip units.
Status LED
Control
k
Jumper
Source Ground
l
Jumper
j
k
l
Module
j