Abnormal COMM’s Detection.
Abnormal comms has always been monitored within the loop code, however when any abnormal
comms is generated by raised background current this will generate a fault on the panel. This is a
requirement for EN54 part 13
Fast Automatics.
The introduction of a more robust response to electrical noise on the loop wiring has slightly slowed
the response of smoke detectors on larger loops. Whilst still within the requirement of EN54, fast
automatics have been introduced to provide an interrupt to speed up the response to an alarm
condition.
Fig 38
Pulse Buzzer on Disables
In normal circumstances the buzzer will sound when any disablement is put onto the panel. This is a
requirement of EN 54 and UL 894, however in certain countries, this is classed as a nuisance warning
so the facility for disabling the buzzer on a disablement can be removed using this button.
Reset Screen
On a later version of software (Display v 3.3.53 dated 5/5/16), VDS require any faults to appear on the
screen following any reset, so a delay screen has been included to allow time for any continuing faults
to appear.
Fig 39
If this screen is not required, then it can be turned off in the high level menu go to page 4 and choose
‘’Reset screen’’ then yes/no as required.
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