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3�1 Supply voltage 58665
The model 58665 can also be operated either using PoE or
from an external power supply.
The current draw can be found in the technical appendix.
3�1�1 Power over Ethernet
In PoE environments (Power-over-Ethernet, IEEE802.3af) power
is provided by the network infrastructure. The Com-Server
supports both phantom power using data pairs 1/2 and 3/6
as well as power feed using the unused wire pairs 4/5 and
7/8.
The model 58665 is a device in PoE Power Class 1 (power con-
sumption 0.44 to 3.84W).
3�1�2 External supply
As an alternative to PoE power supply the Com-Server can also
be powered by an external power supply connected to the
screw terminals on the underside of the housing. A half-wave
rectifier makes the input reverse polarity protected. AC or DC
power may be used, whereby the following limit values must
be observed:
• AC: 18Vrms (- 10%) - 30Vrms (+10%)
• DC: 12V (-10%) - 48V (+10%)
(before SN 2283238 24V (-10%) - 48V (+10%))
When powering with DC voltage polarity must be observed:
L+M
+12-48V DCGND
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