Bosch DVA-12T Installation Manual download pdf (Page 25)

RAID Subsystem DVA-12T | Installation Manual Subsystem Monitoring | en 25

Bosch Security Systems F.01U.027.798 | V1 | 2006.06

4.2.7 Cooling Module LEDs

Each cooling module has one (1) red LED on the back. The LED corresponds to the single fan

in the cooling module. (See Figure 4.6) When the LED is on, it indicates the fan has failed.

When the LED is off, it indicates the fan is functioning properly.

Fig. 4.6 Cooling Module LEDs an Cooling Fan Locations

The subsystem has a novel approach to stabilizing the temperature within the subsystem:

When the intelligent sensors on the backplane detect higher temperature, such as high ambi-

ent 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.

4.3 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 RAID subsystem fails. If the RAID subsystem

manager is onsite and hears an alarm, the manager must read the error message on the PC

terminal or RAIDWatch screen to determine what has triggered the alarm. After determining

what has occurred, the RAID subsystem manager must take appropriate actions to rectify the

problem.

4.3.1 Default Threshold Values

Table 4.6 shows the default threshold values for the RAID subsystem. If any of these values are

surpassed, the alarm will sound:

CAUTION!

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.

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Bosch DVA-12T Installation Manual Page 25