Function description
Operating Manual PSSu H m F DP ETH SD
1002323EN04
12
4.3.2
Current load capacity
Ensure you comply with the current load capacity of the module and periphery supply (see
"Technical Details"). If the current load is higher, an additional supply voltage module is re
quired to refresh the module supply and periphery supply.
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Module supply
The current load is the total current consumption of all the electronic and compact mod
ules.
The module supply does not automatically switch off if values exceed or drop below
their limits. However, the "5 V" LED will light and a message will be entered in the dia
gnostic list.
}
Periphery supply
The current load is the total current consumption of the sensors, actuators and test
pulses supplied via the input/output modules.
The periphery supply does not automatically switch off if values exceed or drop below
their limits. However, the "24 V" LED will light and a message will be entered in the dia
gnostic list.
Please refer to the derating diagram.
Derating diagram for periphery supply: Temperature T dependent on load current I
T (°C)
20
40
60
80
100
0
1
2
3
4
5
6
7
8
9
10
I (A)
4.4
Integrated protection mechanisms
The module has the following protection mechanisms:
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Multichannel diverse processor section
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Cyclical self tests
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Potentially isolated PROFIBUS DP interface
}
Infeed for module supply
–
Polarity protection
–
Voltage monitoring
