3.4 Connecting Power to the NS50
A pre-deployment power-up test of NS50 units is recommended. To conduct a power-up test:
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. Refer to the power supply
requirements Section 2.2.
2. Turn on the DC power supply and verify that the green power light is on. If there is no
green light, refer to Troubleshooting Guide on page 104.
Power can be applied to cabling whilst additional NS50 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 NS50 to supply PoE to other devices. If the
voltage drops below 15V, additional power is required.
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 13: Handling composite cable.
Do not bend the cable at sharp angles; excessive bending can fracture or break the fibre optic
cable.
Do not step on the cable.
Figure 13: Handling composite cable
3.6 Connecting Composite Cable to the NS50
A composite cable is connected to the fibre port of an NS50. Once connected, it will auto detect
devices and their settings.
The following procedure illustrates composite cable connection when there is power being supplied
downstream in the network.
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