Technical specifications
8.5 Technical specifications
SIMATIC IPC427E
110
Operating Instructions, 09/2017, A5E37454814-AB
8.5.3
Power demand of the components
Maximum permitted power consumption of the auxiliary components
Auxiliary component
Maximum permitted power con-
sumption
Max. total power
+5 V
+ 3.3 V
+ 12 V
USB device
High-current 900 mA -
-
10 W (for all USB devices)
DisplayPort
-
500 mA
-
PCIe mod-
ules
Per slot
-
1.5 A
0.5 A
8 W for one slot
12 W for both slots
Total
-
3 A
1 A
The total power for PCIe cards and USB devices may not exceed 15 W
NOTICE
Device can overheat!
To avoid overheating, the power loss per PCIe slot should not exceed 8 watts.
8.5.4
Integrated DC power supply
Input voltage
24 V DC (-20%/+20%)
Output power of the power supply
Max. 80 W
Power failure buffering
Hold-
up time ≥20
ms with 20.4 V (DC_FAIL is active after > 5
ms)
Efficiency
>85 %
Note
Inrush current
The device needs an inrush current of at least 6.5 A for 15 ms.
The peak value of the starting current depends on the input voltage and the impedance of
the 24 V DC power supply. Peak currents greater than 6.5 A are possible. This will not have
a negative impact on device functionality.
