Product specifications

Chapter 3: Subsystem Monitoring
The FALCON II has a novel approach to stabilizing the temperature within
the subsystem: When the intelligent sensors on the backplane detect higher
temperature, such as high ambient temperature or the failure of any cooling
or PSU module, the system will turn the cooling fans to high speed to
extract more heat. Once the ambient temperature cools down to normal or
the cooling or PSU modules have been replaced, the cooling fans will return
to low speed.
3.3 Audible Alarm
Different controller environmental and operational parameters (like
temperature, etc.) have been assigned a range of values between which they
can fluctuate. If either the upper or lower thresholds are exceeded, an
audible alarm will automatically be triggered. The alarm will also be
triggered when an active component on the FALCON II fails. If the E
FALCON II manager is onsite and hears an alarm, the manager must read
the error message on the LCD screen or PC terminal to determine what has
triggered the alarm. After determining what has occurred, the FALCON II
manager must take appropriate actions to rectify the problem. WARNING!
If an alarm is triggered it is necessary for you to determine the problem.
If the audible alarm is ignored and the problem is not rectified,
unexpected damages may occur.
3.3.1 Default Threshold Values
Table 3-7 shows the default threshold values for the FALCON II
subsystem. If any of these values are surpassed, the alarm will sound:
Upper Threshold Lower Threshold
+3.3V +3.6V +2.9V
+5V +5.5V +4.5V
+12V +13.2V +10.8V
CPU Temperature 90ºC 5ºC
Board Temperature 80ºC 5ºC
Enclosure Ambient
Temperature
40ºC 0ºC
Table 3-7: Default Threshold Values
Audible Alarm
3-9