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2N TELEKOMUNIKACE a.s., www.2n.cz 24/56
2.3 Electric Installation
2N Access Unit M can be fed either from an external 12 V / 1 A DC power supply or
from a PoE 802.3af supporting LAN.
External power supply
Use a 12 V ± 15 % SELV supply dimensioned to the current consumption required for
the access unit power output to make your device work reliably.
Current consumption
[A]
Available power output
[W]
1 12
PoE Supply
2N Access Unit M is compatible with the PoE 802.3af (Class 0–12.95 W) technology
and can be supplied directly from the LAN via compatible network elements. If your
LAN does not support this technology, insert a PoE injector, Part No. 91378100,
between and the nearest network element. This power supply 2N Access Unit M
p r o v i d e s
with 12 W for its own feeding.2N Access Unit M
Combined power supply
2N Access Unit can be fed from an external power supply and PoE at the same time.
In this configuration, the maximum supply power is available.
Tip
The external power supply can also be used a PoE switch failure backup
making the unit constantly functional.
Connection to LAN
2N Access Unit M is connected to the LAN using a UTP/STP cable (category Cat-5e or
higher) via the dedicated LAN connector. As the device is equipped with the Auto-
MDIX function, you can use both the straight and crossed cable version.
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