
1. Connect the composite fibre/power cable to a DC power source with correct termination. Note that the
DC supply must be between 10 and 50VDC.
2. Turn on the DC power supply and verify that the green power light is lit.
Power can be applied to cabling whilst additional WNS units are being installed. Power usage levels
should be evaluated prior to adding more units downstream to ensure that the voltage rail does not drop
too low. A minimum of 15VDC is required for a WNS to supply PoE to other devices. If the voltage
drops below 15V, a power inserter is required.
3.4.1 Installing Additional Power
Power inserters may be necessary to provide additional power in a large network or when there are branch
WNS units. This additional power can be inserted via the DC jack on the WNS as shown in
Figure 13: Power inserter DC jack
3.5 Handling Composite Cable During Installation
The composite cable is ruggedly built for the mining environment. However the following precautionary
measures should be noted during installation:
•
Never pull or create tension on the cable. Unreel the cable from the cable reel, or allow the weight of
the cable to unreel as the vehicle is moving as shown in
Figure 14: Handling composite cable
•
Do not be bend the cable at sharp angles; excessive bending can fracture or break the fibre optic cable.
•
Do not step on the cable.
Revision A
34
Wireless Network Switch User Manual
Installation
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