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Temperature monitoring / system monitoring
One goal of temperature and system monitoring is to reliably protect the computer hardware against
damage caused by overheating. In addition, any unnecessary noise is also to be prevented with a
reduced fan speed, and information is to be provided on the system state. The cover monitoring
protects the system from unauthorized opening.
The temperature and system monitoring are controlled by an onboard controller developed by
Fujitsu Siemens.
The following functions are supported:
Temperature monitoring:
Measurement of the processor temperature, measurement of the system temperature with an
onboard temperature sensor, measurement of the device temperature with an optional temperature
sensor (AUX).
Temperature control:
The temperature is controlled with the fan speed and/or by reducing the clock frequency of the
processor. The clock frequency of the processor is dependent on the setting in the BIOS setup.
Temperature-dependent processor speed control enables a reduced fan speed, decreasing noise.
Fan monitoring:
Fans that are no longer available, blocked or sticky fans are detected. Blocked or sticky fans are
operated with 12 V pulse voltage. Fans removed while the system is switched off are signaled by
the Display news LED when the system is switched on again and processed by the BIOS or the
application.
Fan control:
The fans are regulated according to temperature (exception: auxiliary fan (AUX)).
Sensor monitoring:
A fault or removal of a temperature sensor is detected. In this case all fans affected by this sensor
run at maximum speed to achieve the greatest possible protection of the hardware. Temperature
sensors removed while the system is switched off are signaled by the Display news LED and
processed by the BIOS or the application.
Cover monitoring:
Unauthorized opening of the cover is detected, even when the system is switched off. However, this
will not be indicated until the system is operating again.
Voltage monitoring:
The voltages 12 V, 5 V and the CMOS battery are monitored.
6 - English
A26361-D1132-Z120-3-7419
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