Siemens FC2005 - Pre-Signal

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Pre-Signal
When an alarm causing device in a Pre-Signal input group is initiated, the alarm condition is
reported at the panel. Its associated NACs are not activated until the programmed
investigation delay has relapsed or 2
nd
Alarm is initiated anytime during the Pre-Signal delay
time (see figure below).
1
st
Alarm
Initiated
2
nd
Alarm
Initiated
Panel
Reset
Pre-Signal Delay time
Figure A
Figure B
When 2
nd
Alarm is
Initiated
Audible ON
Audible OFF
Audible ON
Audible OFF
Pre-Signal
Normal
Sequence
Pressing the reset button at anytime during the Pre-Signal sequence will initiate a reset
condition and restore the panel to stand-by state.
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