16
When switching to the
PRE-ALARM
state, the triggering of detectors on other inputs are also
taken into account provided that they belong to the same zone. If upon triggering of a first or second
detector of this input, the other input is already in the
PRE-ALARM
state and the detector on it was
triggered no more than 120 seconds ago, this input goes to the
FIRE
state. Thus, the transition to the
FIRE
state takes place if triggering of two fire detectors is registered without requery within two minutes
in the same input or different inputs belonging to the same zone.
When switching to the
FIRE
state, the triggering of detectors on other inputs are also taken into
account, provided that they belong to the same zone. When going to the Fire status, the other input was
already in the
FIRE
state and the detector on it was triggered no more than 120 seconds ago, this input
goes to the
FIRE2
state. Thus, the transition to the
FIRE2
state is initiated if different inputs belonging to
the same zone go to the
FIRE
state twice within two minutes.
When in the
PRE-ALRM
,
FIRE
, and
FIRE2
states, the input is not monitored for short-circuit
and open-circuit faults.
When in the
PRE-ALRM
,
FIRE
, or
FIRE2
states, the input can go to the
DISARMED
,
ARMED
(
ARMING FAILED
if input is or normal) only through manual and network-controller
commands.
Integration Time (Debounce Time) for Input of Type 1 is defined as described in
1.4.2.29
, except
for:
- Integration time of transition from the
ARMINNG FAILED
state to the
ARMED
state is 3
seconds;
- Integration time of transition from the
SHORT/OPEN CIRCUIT
state to the
ARMED
state is 1
second.
The connection of fire smoke (normally open) and detectors on the Input of Type 1 is provided in
1.4.2.13.2.
Type 2: One-Threshold Fire Combined
The input supports fire smoke (normally open) and heat (normally closed) detectors.
The input resistance corresponding to different physical states is provided in
Possible logical states of the input:
–
ARMED (ARMED, ENABLED)
- the input is monitored, the circuit resistance is normal;
–
DISARMED (DISARMED) -
the input is not monitored;
–
DISABLED -
the input is not monitored; the monitoring is disabled by the network controller;
–
ARMING DELAY -
the arming delay is still in progress
;
–
PRE-
ALARM
-
the input goes to this state if the following occurs:
Triggering of one detector (when the
Fire Input Requery Inhibit
parameter is enabled)
Triggering of heat fire detector
–
FIRE
- the input switches to this state in case of:
the triggering by one heat detector was confirmed (after a requery);
the second transition to the PRE-ALRM state of different inputs of the same zone was
registered in a time not exceeding 120 s. In this case, the input that has gone to the
PRE-
ALARM
first does not change its state