TSA-200 / TSA-200XT / TSA-240 / TSA-240XT
© 2010 –
2014 Telefire Fire & Gas Detectors Ltd
Revision 1.06 July 2014
Page 55 of 79
After the extinguishing pulse has elapsed, reset will change the state of the CP as
described earlier, i.e. all alarm indications and outputs are OFF, BUT THE
EXTINGUISHING AND GENERAL FAULT OUTPUTS AND INDICATIONS ARE ON,
and only after entering and exiting the programming mode
, and then pressing the
reset key again (if all issues are resolved. i.e. no events) will the Quiescent state be
reestablished.
15.10 Silencing and Resounding
The TSA-200XT / TSA-240XT has three sound sources: the Internal Buzzer, the Fire
Alarm sounder (horn), and the evacuation (extinguishing) sounder. Their properties are
explained below.
15.10.1
The Internal Buzzer
The Internal Buzzer sounds on every Alarm or Fault event. It can be silenced at any
time, at access level 2, by pressing the Buzzer Off keyboard switch and keying in the
password. The Buzzer resounds on any event, but it cannot be resounded through the
keyboard.
15.10.2
The (Fire) Alarm Sounder
The Control Panel (ECD) has a FIRE ALARM Sounder output, typically a Horn.
This output operates on ANY alarm signal, even if the trigger source does not belong to
the extinguishing decision group.
Silencing of the FIRE ALARM sounder (typically a Horn) output, is possible at access
level 2, as it requires the Operator's password. Silencing is done by pressing the
"Silence/Resound" keyboard switch.
The internal buzzer is also silenced when the alarm sounder is silenced
The Fire Alarm Silenced condition is indicated by a dedicated LED in the General
Display area.
Resounding of the silenced Alarm sounder is possible by pressing the Silence/Resound
key for several seconds.
15.10.3
Evacuation sounding Devices
The TSA-200XT /TSA-240XT has an output for an Extinguishing Sounder (Also referred
to as the Evacuation Sounder, EVAC, or alarm device) output. It operates when the ECD
enters the Pre Discharge Warning Time (extinguishing delay), during the extinguishing
pulse and after the extinguishing pulse has ended, and remains ON until reset.
Silencing the alarm devices ONLY, is not supported!
However, the Extinguishing Module can be disabled by programming.
PLEASE NOTE THAT DISABLEMENT OF THE EXTINGUISHING MODULE
DISABLES ALL THE EXTINGUISHING OUTPUTS AND MOST INPUTS. (See below)
15.11 Disablement
It is sometimes necessary to disable certain functions or interfaces of the ECD. (For
example, if some welding is done near detectors, the ECD might be activated, and it is
required to disable the affected zones, and rely on Manual Activation for protection
against fire)
The control panel will ignore alarms from disabled zones and will not activate disabled
outputs or relays.
