Technical specifications
8.7 X-300M PoE technical specifications
SCALANCE X-300
Operating Instructions, 02/2012, A5E01113043-12
195
Table 8- 89 Power over Ethernet at port P1, P2, P3, P4
PoE function within a power supply system According to IEEE 802.3af / 802.3at (type 1) for
environment A
Method of PoE power feed Alternative A
(refer to the following table for the pin
assignment)
Reserved power per port 15.4 W at port,
of which the following can be used by the PD:
12.95 W
Overall power on all 4 ports Max. 30.8 W
Table 8- 90 Electrical isolation
Between the ports No
Between ports and ground Yes
Between ports and 24 VDC power input Yes
Table 8- 91 Pin assignment of the Ethernet ports of the SCALANCE PoE switch
Pin number / wire
1)
Assignment for data
transmission
Assignment for power transfer
(PoE).
Alternative A (MDI-X)
Pin 1 RX+ V-
Pin 2 RX- V-
Pin 3 TX+ V+
Pin 4 - -
Pin 5 - -
Pin 6 TX- V+
Pin 7 - -
Pin 8 - -
1)
with 4-wire industrial twisted-pair cables, the wires are connected to pins 1, 2, 3 and 6.
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