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User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
337
The page includes the following fields:
Object Description
Power limit mode Allow to configure power limit mode of Web Smart Device. It can choose :
Port Priority Deliver PoE power by port priority setting
Total Limit. Set limit value of the total POE port provided power to the PDs.
Power reservation Show the total watts usage of PoE Switch.
PoE Function Can enable or disable the PoE function.
Priority Set port priority for the POE power management
It can choose the “port priority”, value is “1~4”. High priority is “1”.
Device class Class 0 is the default for PDs. However, to improve power management at the
PSE, the PD may opt to provide a signature for Class 1 to 3.
The PD is classified based on power. The classification of the PD is the maximum
power that the PD will draw across all input voltages and operational modes. A
PD shall return Class 0 to 3 in accordance with the maximum power draw as
specified by Table 4.1.
Current(mA) It shows the PoE device current Amp.
Consumption [W] It shows the PoE device current watt.
Power Limit It can limit the port PoE supply watts.
Per port maximum value must less 15.4, total ports values must less than the
Power Reservation value.
Once power overload detected, the port will auto shut down and keep on
detection mode until PD’s power consumption lower than the power limit value.
For SGSW-2840P, the total PoE power reservation from Port-1~24 is up to 260W
For SGSD-1022, the total PoE power reservation from Port-1~8 is up to 110W
PD Classifications
A PD may be classified by the PSE based on the classification information provided by the PD. The intent of PD classification is
to provide information about the maximum power required by the PD during operation. Class 0 is the default for PDs. However,
to improve power management at the PSE, the PD may opt to provide a signature for Class 1 to 3.
The PD is classified based on power. The classification of the PD is the maximum power that the PD will draw across all input
voltages and operational modes.
A PD shall return Class 0 to 3 in accordance with the maximum power draw as specified by Table 4-13-1.