AirLink LX40 Series Hardware User Guide
Rev. 2 January 2021
20
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The LX40 can also use Power over Ethernet. An Ethernet cable connected to a
compatible
1
network switch or router can supply power to the LX40. No connection to the
on page 21) is required.
Warning:
Electrical installations are potentially dangerous and should be performed by personnel
thoroughly trained in safe electrical wiring procedures.
Avertissement :
Les installations électriques sont potentiellement dangereuses et devraient être
effectuées par du personnel parfaitement formé aux procédures de sécurité de câblage électrique.
The LX40 supports an operating voltage of 7 V–36 V, but because low voltage standby
mode is enabled by default, you must supply more than 9 V at startup.
In cases where both PoE and DC power are connected, PoE will power the LX40 when
DC voltage is below 20 V.
If you want to operate the router at a lower voltage, you can change the low voltage
standby settings once the router is up and running. For more information, refer to the
ALEOS Software Configuration User Guide (Services chapter).
Cable Strain Relief
Sierra Wireless recommends using cable strain relief for installations in high-vibration
environments.
Place the cable strain relief within 200 mm (8 in.) of the LX40 to reduce the mass of cable
supported by the power connector under vibration. Ideally, the strain relief mounting for
the DC cable should be attached to the same object as the LX40, so both the router and
cable vibrate together. The strain relief should be mounted such that it does not apply
additional stress on the power connector. The cable should not be taut and should not pull
the power connector at an angle.
Fusing
For DC installations, Sierra Wireless recommends fusing the power input using a 4 A, fast
blow fuse on the V
in
line, recommended to have no more than ±10% de-rating over the
operating temperature range.
1. The LX40 is a 802.3af Powered Device
