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The following table summarizes the PoE parameters.
PoE PSE parameters
Required power supply parameters
Power available to a PoE device
Required power supply wattage
for a PoE device
Power available to a PoE(+) device
Required power supply wattage
for a PoE(+) device
PoE Power Budget Examples
Example #1
This example is for the Advantech
a power of 65 W. We will use 15 W as the maximum router power consumption; see Chap-
ter 4.1. You can use this power supply to power:
• up to three PoE devices (3
• just one PoE+ device (1
Example #2
To power four PoE+ devices, you should power the router with a minimum power supply of
135 W; see the following calculation:
• required power supply wattage = 4
Use a power supply with enough power to cover the required power consumption of all
connected PoE devices, including the router itself. We recommend using a power supply
with some power reserve.
48 V / up to 135 W
12.95 W / per port
15.40 W / per port
25.50 W / per port
30.0 W / per port
Table 5: PoE PSE Parameters
RPS-ICR4-WR2-PSE
15.4 W + 15 W = 61.2 W < 65 W),
30 W + 15 W = 45 W < 65 W).
30 W + 15 W = 135 W.
18
ICR-4461
power supply, which can supply
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