Polon-Alfa 4000 Operation And Maintenance Documentation Download

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ID-E342-001GB

The LCD display shows a window marked as !!! FIRE ALARMS !!! and information regarding the number
of alarming zones and the number of zones not shown on the display (due to a limited space) is
displayed in a separated field below. On the right hand side, the system displays information regarding
the elapsing time after which outputs to alarm transmission (monitoring) devices will be activated. Until
that time, the control panel signals the 1

STAGE ALARM.

The 1

stage alarm is an internal alarm and it always requires that the personnel on duty reacts in an

appropriate manner, the alarm is acknowledged with the ACKNOWLEDGEMENT push button (during the
T1 time) and the hazards within the facility are recognised (during the T2 time). If the personnel does
not react properly to a 1

stage alarm, a 2

stage alarm is generated.

The main alarm window displays messages assigned to the alarming zones. If the number of alarming
zones is too big to display them simultaneously, i.e. more than 8 zones, the alarms which are not
displayed may be viewed by means of the ALARM push button. All alarming zones will be viewed apart
from the first one which is permanently displayed in two alarm window lines and the last one displayed
in the last two lines.

stage alarm

is an internal control panel mode (signalled with the 2

STAGE ALARM message in the

location  of  the  previously  displayed  monitoring  clock)  which,  apart  from  generating  the  signals  in  the
control  panel,  causes  the  transmission  of  the  fire  signal  outside  (actuation  of  declared  outputs  as
outputs  to  alarming-monitoring  devices  and  actuation  of  additional  outputs whose  actuation  depends
on the 2

stage alarm occurrence (e.g. external signalling devices or fire protection devices controlled

with relay or potential outputs contacts).
A 2

stage alarm may be preceded with a 1

stage alarm or it is generated immediately depending on

the programmed alarming variant for a given zone in the premises or the operation mode set for the
control panel. A 2

stage alarm requires an immediate fire fighting action. During a fire alarm, a

constant acoustic signal is evoked in the control panel (simultaneously with the optical signalling) which
may be dis-actuated by pressing the backlit ACKNOWLEDGEMENT push button.
Pressing the backlit RESET push button results in clearing the fire alarm in the control panel. At least 2

access level is required to reset the fire alarm signalling.

The POLON 4500 control panel enables users to choose (program) one of the 17 alarming variants for a
given  zone  (marked  as  1  ÷  17).  The  process  of  switching  a  given  line  element  in  the  addressable
detection line into the alarm mode is verified by the control panel and, in the following sections of this
Manual will be referred to as line element actuation.

The  alarming  process  defined  by  means  of  variants  1  ÷  17  may  include  all  zones  in  the  control  panel
programmed  according  to  the  programming  manual  PM.  Within  one  zone,  two  groups  of  detectors
marked  as  group  A  and  group  B  may  be  defined.  The  groups  allow  creating  coincidences
within one zone.
When  a  fire  alarm  is  generated,  an  applicable  message  is  printed on  the  paper  tape  if the  printer  has
been provided for operation.

Note:

The fire extinguishing zones numbered from 1 to 4 may only be programmed with variants provided
especially for them, i.e. 13, 14, 15 or 16 (which does not prevent from using these variants for the other
zones).

8.1.2 One-stage alarm (variant #1)

Actuation of a fire warning device results in immediate generation of a 2

stage alarm.

This variant is applicable especially for zones of high fire danger.

8.1.3 Two-stage alarm (variant #2)