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Fan Monitoring - Siemens SIMATIC Box PC 840 Manual

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Hardware Information
7.4.5

Fan Monitoring

Device fan and processor fan operation are monitored. If one of the two fans
should fail, the following reactions are triggered:
Temp LED to red
SOM application is displayed
The temperature error remains stored until the cause of the fan failure has been
corrected in one of the following ways:
S Acknowledgement of the error message via the SOM program.
S Device restart.
7-8
Reaction
Option
SIMATIC Box PC 840 Manual
A5E00085984-04

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