Technical information
8.4 Technical specifications
SIMATIC IPC477D, IPC477D PRO
224
Operating Instructions, 11/2016, A5E31347228-AF
8.4.3
Power requirements of the components
Maximum power consumption of the auxiliary components
Auxiliary components
Maximum permitted power
consumption
Max. total power
+5 V
+3.3 V +12 V
USB device
1
High current
1 A
-
-
Built-in unit: 10 W for all USB
devices
PRO device: 5 W for all USB
devices
PCIe modules
1 2
Per slot
-
1.5 A
0.5 A
5 W for the whole device
PROFIBUS
500 mA
-
-
1
The total power for PCIe
2
and USB expansions may not exceed 15 W
2
Not for PRO device, for built-in unit only
Note
Built-in unit may overheat!
For thermal reasons, the power loss of the PCIe expansion card may not exceed 5 W with
built-in units.
8.4.4
Integrated DC power supply
Input voltage
24 V DC (-20%/+20%)
Power consumption
1
Max. 90 W
Power failure buffering
Hold-
up time ≥20
ms with 20.4 V (DC_FAIL is active after >
5 ms)
Efficiency
>85 %
1
Power consumption depends on device configuration. The specified power consumption relates to
the maximum device configuration.
Note
Inrush current
At least 5 A inrush current for 15 ms is required for device startup.
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.