Panasonic Electric Works Nordic ABMEW01351 Rev: - Planning Instructions Fire alarm system EBL512 G3, V1.1.x91The pre-warning offset and the heavy smoke alarm level can, for thewhole system, be set in WinG3, see chapter "Alarm algorithms", page136. See also WinG3 help.The fire alarm offset can, for the whole system, be set in WinG3, seechapter "Alarm algorithms", page 136.NOTE! This is not a normal action and a special password is required."Pre-warning", "Fire Alarm" and "Heavy Smoke Alarm" can activateprogrammable outputs respectively, see chapter "Control expression",page 76. See also EBL512 G3 Operating Instructions MEW01163.16.4.1 Alarm algorithm / Alternative alarm algorithmIn order to reduce the nuisance alarms88 and ensure that the real firealarms will be activated, six different alarm algorithms are available.See Figure 18., page 92. They are based on: Normal (N), High (H) or Low (L) sensitivity Normal (15 sec.) or slow (35 sec.) detection timeNormal sensitivity (Default) Fire alarm offset is 3.0 % smokeobscuration per meter.High sensitivity Fire alarm offset is 2.4 % smoke obscuration permeter, i.e. less than for normal sensitivity. Can be used when an"early" fire alarm is wanted.Low sensitivity Fire alarm offset is 3.6 % smoke obscuration permeter, i.e. more than for normal sensitivity. Can be used to reducenuisance alarms88 but might not fulfil the EN54-7 specifications.Normal detection time - 15 sec. (Default) There will always be min.15 seconds alarm delay89. This is a "normal filter" to reduce nuisancealarms.Slow detection time - 35 sec.. There will always be min. 35 secondsalarm delay89. This is an "extra filter" to reduce nuisance alarms88 butmight not fulfil the EN54-7 specifications.Each analog smoke detector can have two alarm algorithmsprogrammed (via WinG3). One Regular alarm algorithm that isnormally used (N-15 is default) and one Alternative alarmalgorithm that is turned on/off via a time channel (internal orexternal). E.g. normal sensitivity can be used during night-time andlow sensitivity during daytime (i.e. the alternative alarm algorithm isused to reduce nuisance alarms88 during working hours).The alarm algorithm in use can be read in menu H4/U4.The alarm algorithm parameters can, for the whole system, be set inWinG3, see chapter "Alarm algorithms", page 136 and WinG3 help.(To change some parameters a special password is required.)88 So called false / unnecessary alarms.
