User's Manual

User’s Manual of LRP-822CS/LRP-1622CS
332
In a power over Ethernet system, operatin wer supply unit) over the LAN
infrastructure to powered devices (PDs), r required
by PDs can ximum availabl
power than t ower consu tion of the
ajority of the ports, power management is implemented.
oltage and current .The input power consumption is equal to the
nd activates additional
ower than the power level at which additional PDs cannot be
ue ties. The power budget is
anaged according to the following user-definable parameters: maximum available power, ports priority and maximum
allowable power pe
Reserved Power
There are five m e ring how the ports/PDs may reserve power and when to shut down ports.
 Allocation mode
In this mode, the user allocates the amount of power that each port may reserve. The allocated/reserved power for each
port/PD is specified in the Maximum Power fields. The ports are shut down when total reserved power exceeds the amount
of power that the power supply can deliver.
4.15.2 System Configuration
g power is applied from a power source (PSU-po
which are connected to ports. Under some conditions, the total output powe
e power provided by the PSU. The system with a PSU is capable of supplying less
mption of all the PoE ports in the system. In order to maintain the func
exceed the ma
he total potential p
m
The PSU input power consumption is monitored by measuring v
system’s aggregated power consumption .The power management concept allows all ports to be active a
ports, as long as the aggregated power of the system is l
connected .When this val is exceeded, ports will be deactivated, according to user-defined priori
m
r port.
s for configuod
In this mode, the port power is not turned on if the PD requests more available power.
4.15.3 Power over Ethernet Configuration
This section allows the user to inspect and configure the current PoE configuration setting as screen in Figure 4-16-1
appears.
Figure 4-16-1: PoE Configuration Screenshot