AMCI NXEE2, User Manual

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NXEE2 User Manual
I
NSTALLING THE
NXEE2
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1.3 Power Wiring
The NXEE2 accepts 24 to 48 Vdc as its input power. Maximum power draw is 2 watts (83 mA @ 24 Vdc).
This does not include the power draw of the SSI sensor. If the sensor is powered from the NXEE2, add its
power requirements when determining the size of the power supply. The mating connector accepts 24 to 12
AWG wire. Consult the electrical code in your area for minimum allowable wire size.
As shown in the figure below, the power connector is located on the bottom of the module. The mating con-
nector is included with the NXEE2. Spares are available from AMCI under the part number MS-4N. They are
also available from Phoenix Contact under their part number 187 80 37.
Figure T1.2 Power Connector Location
Power connections should be tight, as loose connections may lead to arcing which will heat the connector.
Phoenix Contact specifies a tightening torque of 4.4 to 5.4 lb-in (0.5 to 0.6 Nm).
The power supply is connected to the pins marked “+Vdc In” and “DC Return”. The “Chassis GND” pin is
used to attach the NXEE2 to earth ground.
1.4 Network Connections
As shown in figure T1.2 above, the NXEE2 modules have two Ethernet ports with a built-in Ethernet switch
connecting the two. In non-redundant applications, either port can be used to attach the module to the net-
work. The remaining port can be used to extend the network to another device if this would reduce wiring
costs.
1.4.1 EtherNet/IP DLR Applications
In Device Level Ring applications, the NXEE2 modules function as Beacon-Based Ring Nodes. In these
applications, both ports are used when wiring the ring, daisy chaining from one unit in the ring to the next.
1.4.2 PROFINET MRP Applications
In Media Redundancy Protocol applications, the NXEE2 modules function as a Media Redundancy Client
(MRC). In these applications, both ports are used when wiring the ring, daisy chaining from one unit in the
ring to the next.
Ethernet Port 1
Ethernet Port 2
Power Connector
+Vdc
DC Return
Chasis GND (Shields)
DC Return