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© 2002 Carlo Gavazzi Industri A/S. All rights reserved
G 3800 X015 Configuration Software
October 2002
G 3800 X015 Configuration Software
October 2002
G 3800 X015 Configuration Software
October 2002
The above illustration shows the normal sequence and reset of an alarm:
t
1
: When power supply is connected, the system becomes alert after elapse of the set reset delay T
R
, indicat-
ed by reset of the reset output.
t
2
: After a short delay (approx. 3 s) after the occurence of a fire (activation of the Passive detector), the alarm
is started. This takes place by the alarm siren flashing and by output of the Passive detector channel, whereby
the alarm source is indicated.
t
3
: The channel generator activates the alarm signal channel after elapse of the set alarm signal delay T
M
.
t
4
: By activation of the reset button, the alarm siren and the alarm source indication are reset, although the
alarm source (Passive detector) is activated as before. The reason is that the Master Generator ignores all
alarm sources during the reset delay.
t
5
: By removing the smoke from the smoke detector, the Passive detector opens again and deactivates the
alarm channel.
t
6
: After elapse of the reset delay, the system becomes alert again, and the reset output is reset.
Time characteristics
Passive detector (IN)
Passive detector (OUT)
Reset (IN)
Alarm signal
T
EV
Siren
t
t
t
PMan_TSmoke_1a
t
2
t
1
t
4
t
3
t
t
t
t
5
t
6
Reset (OUT)
T
R
T
R
T
M
