Siemens SIMATIC SCALANCE X-300M PoE, Краткое руководство по эксплуатации

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Table 7-10 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 7-11 Electrical isolation
Between the ports No
Between ports and ground Yes
Between ports and 24 VDC power input Yes
Table 7-12 Pin assignment of the Ethernet ports of the SCALANCE PoE switch
Pin number / wire
1)
Assignment for data transmis‐
sion
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.
7.3 Cable lengths
Table 7-13 Permitted cable lengths (copper cable - Fast Ethernet)
Cable type Accessory (plug, outlet, TP cord) Permitted cable length
IE TP torsion cable with IE FC Outlet RJ-45
+ 10 m TP cord
0 to 45 m
+ 10 m TP cord
with IE FC RJ-45 Plug 180 0 to 55 m
Technical data
7.3 Cable lengths
SCALANCE X-300M PoE
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Compact Operating Instructions, 11/2019, A5E02630810-13