Power Over Ethernet; Power And Voltage Range According To The Standard; Poe Properties Of The Devices - Siemens SIMATIC NET SCALANCE XR-300WG Operating Instructions Manual

Description of the device

4.7 Power over Ethernet

4.7 Power over Ethernet
Function
The "Power over Ethernet" function supplies connected devices with power via the Ethernet
cable. Devices supplied with power via an Ethernet cable do not require a separate voltage
source.
PoE-compliant devices can be divided into the following groups:
• Power source (PSE - Power Sourcing Equipment)
These inject power onto the Ethernet cable.
• Power consumer (PD - Powered Device)
These are supplied with power via the Ethernet cable.
4.7.1

Power and voltage range according to the standard

Note the values specified for the power of the power source, so that the power supply is ensured
at the power consumers according to the standard.
PoE class Power supplied by the pow‐
er source
0 15.4 W
1 4
2 7
3 15.4 W
4 30
5 45
6 60
4.7.2

PoE properties of the devices

Note
Turn off the power source before you disconnect the PoE cable of a power consumer.
32
Available power at the pow‐
er source
12.95 W
3.84 W
6.49 W
12.95 W
25.5 W
40 W
51 W
Type Standard
1 IEEE802.3af
2 IEEE802.3at
3 IEEE802.3bt
Operating Instructions, 03/2021, C79000-G8976-C454-07
Designation
PoE
PoE+
4-pair PoE
SCALANCE XR-300WG