Appendix A • Maintenance Controller Extended (MTCX)
Appendix A
547Automation PC 620 with 945GME N270 CPU board User's Manual V 1.10
3.2 Temperature monitoring - Fan control
The MTCX constantly monitors the temperature using temperature sensors (see section 1
"Temperature sensor locations", on page 541), which directly determine how the fan is
controlled. The RPM depends on the temperature measured. The limit values depend on the
MTCX firmware version being used.
The fans stop again when the temperature drops below +37°C.
Sensor range Start-up temperature Max fan speed at:
CPU +39°C +55°C
Power supply +39°C +55°C
Slide-in drive 1/2 +39°C +55°C
I/O +39°C +55°C
Table 333: Temperature limits for fan control
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