WAGO 852-1417, Руководство пользователя

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WAGO Industrial Switches General 15
852-1417 Industrial Eco Switch
Manual
Version 1.2.1
3.4 PoE (Power over Ethernet)
“Power over Ethernet” (PoE) supplies power and transmits data simultaneously
and safely over the same ETHERNET cable, eliminating the need for a separate
power supply.
“Power over Ethernet” (POE) is an ETHERNET network technology defined in the
IEEE 802.3af (PoE) und 802.3at (PoE+) standards.
If the IEEE 802.3at standard is supported, a higher current can be transmitted via
the ETHERNET cable.
Table 3: Comparison of PoE and PoE+
Feature PoE PoE+
Standard IEEE 802.3af IEEE 802.3at
PSE power 15.4 W 25.4 W
Max. power PD 12.95 W 21.90 W
Max. current per core pair 350 mA 600 mA
Transmission standard 10Base-T
100Base-TX
10Base-T
100Base-TX
1000-BASE-T
Calculation example for PoE+:
Table 4: Calculation Example for PoE+
Power consumption Value
4 ports at 30 W 120 W
Device requirement 13 W
Total 133 W
Special equipment is required for PoE (PSE = “
P
ower
S
ourcing
E
quipment”) and
subscribers (PD = “ P owered D evice”).
The PoE description and performance classes are available in the appendix (see
Section “Appendix” > “PoE Performance Classes”).
PoE can be realized in 2 operating modes.
Operating Mode A
In this operating mode, the supply voltage is modulated on the data lines
(“phantom power”).
Operating Mode A can be used with the following transmission standards:
• 10BASE-T
• 100BASE-TX
• 1000BASE-T