10
Neon
- Conventional Fire Alarm Control Panel
5.3.16 General Fault indication (General Fault)
GENERAL FAULT
, indicates a problem in the system. It
turns
ON
(steady ON)
in case of:
•
Zone wiring connection problems,
• Signalling devices output wiring problems
• Relay outputs wiring problems.
• Auxiliary and power faults
• Earth fault condition
The above mentioned problems could be open circuits,
shorts between wires or shorts between wires and earth.
Consequently the Fault relay output is activated (
Item 22,
page 4
). At the same time there will be a continuous audible
notification from the on board Buzzer.
It is possible to silence the Buzzer by pressing the
SILENCE
BUZZERS
key
[2]
, with the keyswitch in A.L.1 position.
When the problems causing the fault(s) are restored all the
above indications will turn off automatically.
Short
Normal
Open
Min
Max
Min
Max
Min
Max
Signaling
devices
0
400 1.6K
7K
10K
∞
Zone
0
15
1.5K
7K
10K
∞
Table 4.
Fault detection values (Ohm)
Zones also recognize the range of 40 to 1200 Ohms as
alarm.
5.3.17 Zone Disablements, Test, Fault indications
These indicators, referenced as FL1 to FL8, show that the
corresponding zone is:
•
In “zone open” Fault if blinking at 1 sec interval
•
In “Zone Shorted“ fault if blinking at 0.5 sec interval.
• Disabled by an A.L.2 operation, if continuously ON with
the
*DISABLEMENTS*
indicator also active (steady
ON).
• In test (and thus disabled), if continuously ON with
*TEST*
indicator also active (steady ON).
Zone faults
Possible causes of a zone fault indication are:
(a1)
Disconnection or interruption of wiring of the zone.
(a2)
Short-circuit in the wiring of the zone.
(a3)
Removal of sensor from its base.
(a4)
Removal of the terminating resistor or capacitor
(EOL).
See also section 10.3
.
Watchdog System
The
Neon
panel contains a watchdog circuit that will ac-
tivate when the microprocessor is either faulty or unable
to execute the programmed firmware. Upon detection, the
Fault relay, the on board sounder and the system and gen-
eral fault indicators on the user interface are all activated.
6. Alarm Verification
(also called Intellizone in this manual)
6.1 System Overview - Alarm Verification
The purpose of the Alarm Verification feature is to minimize
false alarms. The concept of alarm verification is to have
the system receive a Second Alarm signal from the same
or another zone within a predefined time after the First
Alarm signal. Only then will the General Alarm condition be
activated. To prevent the First Alarm signal from causing a
General Alarm, it must originate from an intellizone.
Please note that the terms Alarm Verification and intelli
-
zone are treated as synonymous in the following sections.
6.2 System Operation - Alarm Verification
Each zone may be programmed to be an “Intellizone” (from
microswitch SW-B). The sum of the intellizones form the
intellizone group.
The operation of the intellizone system is as follows:
When an alarm condition is detected on an intellizone (First
Alarm):
• The
“Intellizone Delay”
is activated (can be set from
SW-A 6,7,8).
•
The “Automatic Alarm Cancel Delay” (5 minutes) timer
is activated.
• The pre-alarm is indicated on the corresponding Alarm
Indicator (AL1-AL8). The General Alarm Indicator is
not activated.
•
The system buzzer produces a notification sound.
•
The Main Siren relays are NOT activated (General
Alarm condition is not established).
•
The Siren 2 relay, if configured so by SW-A-5, is acti
-
vated.
•
After the “Intellizone Delay” time, the automatic detec
-
tors are reset.
•
During the “Intellizone Delay” any other zone (NOT
only intellizones) except the initial may provide the
Second Alarm signal (see below).
•
The intellizone pre-alarm will remain active for the
remainder of the 5 minutes before the initial alarm is
completely canceled.
During the above delay (Automatic Alarm Cancel Delay)
any zone (not only intellizones), including the initially trig
-
gered intellizone may provide the Second Alarm.
The Second Alarm will:
•
Activate the General Alarm Condition.
• Activate the alarm siren relays.
•
De-activate the Siren 2 relay, if configured for pre-
alarms by SW-A-5.
The Intellizone feature may be disabled/re-enabled from
Access Level 2, Key
[3]
“Alarm verification toggle”. The
system status is indicated accordingly with the “Alarm Veri-
fication” as below:
• OFF:
No Alarm verification programmed.
• ON:
Alarm verification active for selected zones.
• BLINKING:
Alarm verification is programmed but not
active at the moment, either due to Day/Night or man
-
ual disablement.
6.3 Day/Night hardware input
The disablement of the Alarm Verification system, can also
be controlled by the “Day/Night input” hardware input. If
left unused (nothing connected to the input) the system will
use Alarm Verification, unless the user has disabled it.
If connected to a switch (for example to a periodic timer),
when the contacts are closed (shorted together) the Alarm
Verification is disabled. The panel will indicate the disabled
condition by blinking the
*ALARM VERIFICATION*
indica-
tor.
