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ALPU PTP INJ
INSTALLATION NOTES
The ALPU PTP INJ is intended to be installed indoors or outdoors, on wall or pole
mount applications. The unit features mounting feet on the sides that mount on 4”
center-to-center holes with #10 sized hardware. The mount foot also adapts to 4”
diameter pole mounting kits with a 4.5” center-to-center holes and larger hardware.
Communication cables with the RJ45 connectors already installed can feed directly
into the enclosure. The enclosure features has an integral retention feature that
grips the cable with a screw down bracket. A pole mount adapter kit (pn 1000-1164)
is available to meet installations on a wide range of pole diameters from 2” metal
fence poles to 10” diameter utility poles.
INSTALLATION INSTRUCTIONS
1.
Remove the cover by removing the screw on the front of the unit.
2.
Mount the device using the two mounting holes, as close to the equipment
to be protected as possible with the strain reliefs facing the ground as
shown in Figure 1.
3.
Connect one Ethernet cable between the Transceiver and the protection
module using the “SURGE” RJ45 jack.
4.
Connect one Ethernet cable between the Powered End Station and the
protection module using the “PROTECTED” RJ45 jack.
5.
For Power-over-Ethernet applications, connect the external power & return
conductors (±70 Vdc / 1A max) to the screw terminals for the appropriate
signal pair lines to be powered.
For IEEE 802.3-2012 Mode A, connect the power and return conductors
(up to 14 AWG/2.5mm2) to the “Mode A” connector. This will carry the
power on signal pairs 1/2 and 3/6.
For IEEE 802.3-2012 Mode B, connect the power and return conductors to
the “Mode B” connector. This will carry the power on signal pairs 4/5 & 7/8.
See the Application Diagram (Figure 2) for further information.
Note: For custom applications, any two of the four screw terminals can
be used to carry the power and return conductors across different pair
groupings as required.
6.
The ALPU incorporates a 1/4-20 ground stud. Attach a ground reference
wire (minimum 8 AWG) as short as possible (less than 3 feet) between this
stud and the site grounding point. The two optimum ground connection
points are shown on the metal enclosure (see Figure 1).
Refer to local codes and equipment manufactures standards before
installation.
7.
Replace cover.
1200-452 Rev B
Figure 2 - Application Diagram
Figure 1 - Mechanical Outline Drawing (in[mm])
