9
1.2.3. Operation Overview of PoE Power Supply Func
-
tion
The downlink ports can provide PoE power supply for IEEE802.3at/af compatible
devices. A single port can supply power up to 30 W.
The number of downlink ports and amount of power supply by the whole unit are
shown below for each model.
・ Power supply operation when the PoE LIM. LED is orange blink (the whole unit
is overloaded)
When the whole unit is overloaded due to a power request exceeding the limit,
you can check which port has stopped supplying power, by checking whether
the port LED (right) is green blink. To keep power request less than maximum
power supply on the whole unit, unplug the cable connected to the port green
blink.
Priority control of the power supply can be set and changed from the web con
-
trol screen. (By factory default, the priority of all downlink ports is set as the
same.)
・ Power supply operation when a single port is overloaded
When power request exceeds the maximum on a single port, the port is over
-
loaded and stops supplying power. You can check which port has stopped sup
-
plying power, by checking whether the port LED (right) is green blink. Unplug
the cable on the port green blink.
Note:
Power consumption may be greatly different between during normal opera
-
tion and during maximum power consumption depending on the PoE power
receiving device. Configure the switch
not to exceed the limit
.
Note:
When priority control is not set or the priority is set as the same for all ports,
the port with the smallest port number will be given priority for power supply.
(If power request exceeds the limit of the whole unit, a port with a larger port
number is blocked to stop supplying power.)
Model name
Number of downlink ports
(PoE power supply supported)
Power supply by the
whole unit
GA-A
16 (port 1 to 16)
112 W
GA-A
24 (port 1 to 24)
168 W
GA-A
48 (port 1 to 48)
336 W
