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Powered Device
Classes
Maximum power output
Class
0
1
2
3
4
Power Budget
Powered devices are grouped into the five classes listed in Table 1 on
page 23. The classes are based on the amount of power the devices
require. The IE210L Series PoE switches support all five classes.
Table 1. IEEE powered device classes
from a switch port
15.4W
4.0W
7.0W
15.4W
30.0W
The IE210L Series PoE switches have the following power budgets:
AT-IE210L-10GP: 124 watts
AT-IE210L-18GP: 247 watts
This is the maximum amount of power the switches can provide at one
time to the powered devices.
The power requirements of the PoE devices determine the maximum
number of devices the switch can support at one time. So long as the total
power requirements of the powered devices is less than the power budget
of the switch, the switch can supply power to all the devices. But if the total
power requirements exceed the power budget, the switch denies power to
one or more ports using a mechanism referred to as port prioritization.
To determine whether the power requirements of the PoE devices you
plan to connect to the switch exceed its power budget, refer to their
documentation for their power requirements and add the requirements
together. The switch should be able to power all of the devices
simultaneously as long as the total is below its power budget. If the total
exceeds the available power budget, you should consider reducing the
number of PoE devices so that all of the devices receive power.
Otherwise, the switch powers a subset of the devices, based on port
prioritization.
The switch can handle different power requirements on different ports.
This enables you to connect different classes of PoE equipment to the
ports on the switch.
IE210L Series Industrial Gigabit Ethernet Switch Installation Guide
PD power range
0.44W to 12.95W
0.44W to 3.84W
3.84W to 6.49W
6.49W to 12.95W
12.95W to 25.5W
Margin of cable loss
0.8W
0.2W
0.4W
0.8W
1.2W
23
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