32 en | Subsystem Monitoring RAID Subsystem DVA-08K | Installation Manual
F.01U.027.797 | V2 | 2008.08 Bosch Security Systems
4.3 Audible Alarm
Different subsystem environmental and operational parameters (i.e., 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 of the subsystem fails. If the subsystem manager is
onsite and hears the alarm, the manager will have to read the error message on the LCD
screen or the PC terminal in order to determine what has triggered the alarm. After determin-
ing what has occurred, the subsystem manager must take appropriate actions to rectify the
problem.
4.3.1 Default Threshold Values
Table 4.8 shows the default threshold values for the subsystem. If any of these values are sur-
passed, the alarm will sound.
The controller self-monitoring thresholds in Table 4.8 are the default threshold values. The val-
ues set for the subsystem’s ambient temperature are pre-configured before shipping and can-
not be changed.
CAUTION!
When 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.
NOTICE!
The threshold values listed below are used to trigger a warning event and sound the alarm. A
different value set is reserved for triggering the cooling fans to operate at a high rotation
speed. The fan speed value set is not user-configurable.
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 4.8 Default Threshold Values
