Barox L Series, Operating Instructions Manual, Page: 19 / 69

barox Kommunikation 19
3.11.1. PoE Configuration
Every switch has a pre-defined performance capacity. This describes how much power can be
supplied via the PoE ports. The crucial component here is the power supply installed in the
switch. In the above example using an RY-LGSP16-10 switch with 8 PoE+ ports, a maximum
of 130 W can be supplied. This means that it is impossible to connect a 30 W terminal device
to each of the 8 ports as this would require a total of 240 W. The integrated power unit cannot
supply this much power.
This means that it is important to keep track of how much power is being supplied per port.
POE appliances are divided into various categories depending on their respective consumption.
Class Power available to the powered device Classification signature
0 0.44
– 12.96 W
0 to 4 mA
1 0.44
– 3.84 W
9 to 12 mA
2 3.84
– 6.49 W
17 to 20 mA
3 6.49
– 12.95 W
26 to 30 mA
4 12.95
– 25.50 W (only 802.3at/Type 2)
[4]
36 to 44 mA
https://de.wikipedia.org/wiki/Power_over_Ethernet
Reserved Power determined by
One can define how the maximum amount of power to be supplied is determined in the section
“Reserved Power determined by”.
-
Class = corresponds to the class to which the terminal device says it belongs
- Allocation = according to the value stated in the
“Maximum Power (W)” column
- LLDP-Med = ditto Class mode, pulls the information via LLDP (where possible)
If the terminal device exceeds the predefined power limit, the port turns PoE off.