Siemens SIMATIC IPC627D Operating Manual page 21

"Fan Control Configuration"
Parameter
Fan Control Mode
Depending on the ordered device configuration
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BIOS Description
Operating Manual, 05/2016, A5E33664825-AB
submenu
1
Meaning
Enhanced The fan speed is automatically increased to maintain the CPU
1
performance. Suitable for high temperatures.
Standard The fan speed is automatically adjusted. Cooling and CPU power
are balanced in this case.
Silent The processor speed is automatically adjusted to the temperature
before the fan speed is adjusted. The fans are quieter, but the
CPU performance decreases as well.
Disabled The fan control is switched off. The fans always run at full speed.
BIOS Setup (SCU)
3.4 Advanced menu
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