XT – Configuration Option 29
The Sigma XT is the EN12904 pt 1 approved,
BSI Certified 3-zone single area extinguishing
control panel, which has replaced the popular
and established K2.01 panel.
The Sigma XT has inherited many of the facilities
of the K2.01 panel but, in addition, has more
flexibility and additional facilities that
can be provided by a microprocessor based
Whilst we have endeavoured to keep the Sigma
XT operation and feel as familiar as possible
for our existing K2.01 users, we of course
have had to meet the requirements of EN12094
This standard does have some requirements
that have resulted in a different mode of
operation to the older K2.01 panel.
The most significant difference is
that when the release sequence has started,
it is not possible to reset the extinguishing
element of the panel until the extinguishing
released signal has been received.
This is to meet clause 4.12.2 of the standard,
which states that a means to inhibit the reset
facility until the released condition has
been received shall be provided, and configured
at access level 3.
Within the configuration settings, there
is an option to allow the extinguishing system
to be reset before the solenoid output is
operated. This is configuration option C29,
which is shown as EXTINGUISHANT OUTPUT CAN
BE RESET DURING IMMINENT PHASE
When C29 is selected, the extinguishant panel
can be reset during the second stage delay
time, for testing and commissioning purposes.
This mode of operation is more in-line with
the K2.01 panel.
By default, configuration option C29 is not
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