Approved Panels - Delays to outputs
The facility to have delays to outputs (to
allow investigation of the fire event without
evacuating the building) is an attractive
option in certain commercial premises.
Such a facility is permitted within the requirements
of the product standard EN54-2, as an "Option
with requirements". This means that such
a facility is optional, but if implemented
should meet certain requirements specified
in the standard.
7.11 of EN54-2 specifies the requirements
of the delay option, including maximum delays
permitted, which outputs can be delayed and
which level these delays are configured.
7.11 also refers to Clause 9.4.2.c of EN54-2.
This clause states that is shall be possible
to disable the immediate actioning of outputs,
to delay the response of outputs in accordance
with the requirements of clause 7.11.
other words, delays are configured at commissioning
but are never active unless selected by "Disabling
the immediate output" response.
clause 9.4.2.c. is a disablement function,
the "General Disablement" indicator
and "Delay On" indictors will also
be lit whenever the outputs are selected to
mode of operation applies to all approved
Kentec control panels. The facility to switch
the delay on and off is performed using the
"Ad" menu option on the Sigma CP
and Sigma XT control panels or by using the
"Disable Immediate Output Response"
menu option on the Syncro panel.
general, this mode of operation has not been
a problem with the Sigma approved panels,
as there are few conventional systems that
are configured with delays to outputs.
this requirement of EN54-2 does cause problems
with EN54-2 Syncro based systems for two reasons.
The Syncro is always showing the disablement
condition when the delays are selected.
It is easy to forget to select the delays
using the disablement menu if you are not
familiar with the EN54 approved version of
the control panel, as it was not necessary
to select the disablement on earlier Syncro
is necessary to understand that this mode
of operation, whist unpopular with many customers,
is necessary to meet the requirements of the
current EN54-2 standard and therefore cannot
be revised on BSI approved panels.
a detailed explanation of all the changes
made to the EN version panel, please click