G 3800 X036 Operation Manual
August 2006
62
© 2006 Carlo Gavazzi Industri A/S. All rights reserved
Time characteristics
Passive detector (IN)
Passive detector (OUT)
Manual armouring (IN)
Alarm signal
Alarm siren
Manual armouring (OUT)
T
FV
FV
T
A
A
T
AV
AV
T
M
M
The above illustration shows the normal sequence of an alarm using manual armouring to start and stop the
alarm:
t1: When the Mastergenerator is switched on, the alarm system becomes alert through activation (once) of the
Manual Armouring function.
t2: An alarm contact is activated, eg by the opening of a secured port. Since the armouring delay TFV in this
example has not yet elapsed, nothing happens at first.
t3: After elapse of the armouring delay TFV, the alarm is started, ie both the channel of the alarm contact and
that of the Manual Armouring start to flash.
t4: After elapse of the de-armouring delay TAV, the Mastergenerator activates the alarm siren.
t5: After elapse of the siren time TA, the alarm siren channel is deactivated. The flashing of the alarm contact
and the Manual Armouring output continues.
TEV