BR-Automation Automation PC 820, User Manual, Page: 38 / 252

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Technical data • Entire device
Automation PC 820 User's Manual V 1.00
2.2.3 Temperature monitoring - Fan control
The MTCX constantly monitors the temperature using temperature sensors (see section 2.2.2
"Temperature sensor position" on page 37), which directly determine how the fan is controlled.
The RPM depends on the temperature measured.
)
The fans are only switched off again when the evaluated temperature remains 6°C below the
start-up temperature for a time span of 30 minutes (=lag-time).
Sensor range Start-up temperature Max fan speed at:
CPU + 70°C + 86°C
Baseboard Out + 65°C + 81°C
Baseboard Center + 65°C + 81°C
Baseboard In + 54°C + 70°C
Power supply + 65°C + 81°C
IF slot (PCIec card slot) + 65°C + 81°C
Table 14: Temperature limits of the fan (MTCX PX32 V0.03).