Siemens X-400 - Manual (Page 39)

Product Description of SCALANCE X-400
Operating Instructions for SCALANCE X-400 Industrial Ethernet Switches
C79000-G8976-C186-03
39
3.1.1 Power Module
The power module is inserted in slot 2.
The power can be fed into the power module redundantly over two inputs. The two
power inputs are isolated from each other, there is no power distribution. If redun-
dant power feed-in is used, the switch is supplied solely by the section of the
power module with the higher output voltage.
The front 4-pin connector is used for the power supply. The input voltage is 24 V
DC (20.4 – 28.8 V). The signaling contact supplies the fault status at the rear 4-pin
connector. If there is a fault, the contact opens.
F
L 1
L 2
R M
S T B Y
D M 1
D M 2
P 1
P 2 P 1
P 2
P 3
P 4 P 1
P 2
P 3
P 4 P 1
P 2
P 3
P 4 I N 1 / I N 5
I N 2 / I N 6
I N 3 / I N 7
I N 4 / I N 8
2 3 4 1 1 8 9 1 0 7 6 5
Figure 3-5 Slot of the power module