Bosch Appliances DVA-08K Audible Alarm, 4.3.1, Default Threshold Values, Upper Threshold, +3.3V

32 en Subsystem MonitoringRAID Subsystem DVA-08K Installation Manual

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.
	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.
4.3.1	Default Threshold Values

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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.

Table 4.8 shows the default threshold values for the subsystem. If any of these values are sur- passed, 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	40ºC	0ºC
Temperature
Table 4.8 Default Threshold Values

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.

F.01U.027.797 V2 2008.08 Bosch Security Systems