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Description of the device
4.7 Power over Ethernet (PoE)
• The PoE ports are divided into port groups:
– Ports P5 to P8
– Ports P13 to P16
Devices with 8 ports have one port group, devices with 16 ports have two port groups.
• In total a power source can make a maximum of 120 W (incl. line losses) available. The power
can distributed to the port groups variably.
• Note the line losses. For example to supply power consumers with approx. 102 W, the
connected PoE power supply must make at least 120 W available.
• If you use a Cat5/Cat5e cable with a maximum length of 100 m, the connected device can be
supplied with a power of 25.5 W.
Note
Turn off the power source before you disconnect the PoE cable of a power consumer.
Sample configuration for PoE ports on SCALANCE XP-200
The following configuration graphics show as examples how power supply via PoE might look
with SCALANCE XP-200. In all examples, 120 W is available through the SCALANCE
XR216PoE EEC. These 120 W are used differently in the examples:
• In example 1, the 120 W are used to operate 4 power consumers which each consume
approx. 25.5 W.
• In example 2, the 120 W are used to operate 6 power consumers which each consume
approx. 13 W.
• In example 3, the 120 W are used to operate 8 power consumers which each consume
approx. 6.5 W.
Example 1
SCALANCE
XP216PoE EEC
①
42
Office
PoE
Power consumer
SCALANCE W1750D-2IA RJ45
PoE
Required power
Approx. 25.5 W
Operating Instructions, 03/2021, C79000-G8976-C428-08
PoE
PoE
Available ports
P5 - P8, P13 - P16
SCALANCE XP-200
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