W&T Microwall Gigabit 55210, Manual

Page: 15 / 75

15
W&T
Hardware, interfaces and displays
Subject to error and alteration
2�2 Power supply
The power supply of the Microwall is alternatively via PoE or
an external power supply. Simultaneous connection of both
power supplies is not permitted. The current consumption
can be taken from the technical data.
2�2�1 PoE- supply
The Microwall can be supplied via the interface Network 1 (ye-
llow) via PoE according to IEEE802.3af. It is a PoE power class
2 device (power consumption from 3.84W to 6.49W).
2�2�2 External power supply
As an alternative to the PoE supply, the Microwall can be sup-
plied externally via the pluggable screw terminal located on
the underside of the housing. The DC voltage used must be
within the following range and the polarity must be observed:
•
DC voltage: 24V (-10%) - 48V (+10%)
1
WARNING
Only a floating power supply unit may be used for the exter-
nal supply of the Microwall 55211. Its reference ground for
the output voltage must not have a direct connection to the
protective conductor.
The power supply unit used to supply the Microwall must
guarantee a safe separation of the low voltage side from the
supply network according to EN62368-1 and must have „LPS“
characteristics.