TITANUS
RACK·SENS
®
1U
Commissioning
TRS_A_07-en-e
Data: 03/09
7
– 9
7.2.4.1
Alarm delay setting
The default delay period for the alarm threshold can be changed using
the diagnostics tool. The default setting for the alarm delay period is 10
seconds. If the smoke level rises to the alarm threshold while in opera-
tion, the delay period starts to run. The signal is only forwarded if the de-
lay period is expired and the smoke level still persists. The alarm LED
flashes during the delay period.
Alarm
delay
Default alarm
delay
Setting intervals
0 s – 60 s
10 s
1 s
The alarm delay period should only be set to 0 seconds for testing pur-
poses.
0 - 60 s
0 - 60 s
alarm delay
pre-warning period
alarm
triggering
the relays
triggering
for
extinguisher activation
7.2.4.2
Air flow range setting
The default release threshold for an air flow fault can be changed using
the diagnostics tool. The air flow fault threshold indicates the percentage
of change in air flow where an air flow fault is displayed.
threshold range
Default threshold
Setting intervals
10 % - 50 %
20 %
1 %
The air flow fault threshold should be left at the default setting of 20%
when monitoring racks with forced-air cooling.
TIP
