Product Manuals/Man-1088_Sigma XT_26 Page 19 of 40
13. Connection to relay contacts
Volt free changeover relay contacts are provided for local control and signalling if required. These
contacts are rated for switching signalling circuits only and the maximum ratings listed in table 1
should not be exceeded under any circumstances.
Typically, the Aux 24V output of the control panel is switched through these relays and used to
control other systems.
13.1 Fault relay
The fault relay is normally energised and will de-energise upon any fault condition including total
loss of power. These also include the following inputs and monitored circuits:
Low Pressure Input Active
Low Pressure Fault
Zone Fault
Sounder Fault
Ext Output Fault
Fault – FLT Remote Input Active
Battery Fault
13.2 Local fire relay
The fire relay will energise upon activation of a fire condition on any of the zones or pressing of the
sound alarm button on the front panel. The relay will remain activated until the alarm is silenced or
the panel is reset. This relay will not operate upon activation of the remote AL input.
13.3 Fire relay
The fire relay will energise upon activation of a fire condition on any of the zones or pressing of the
sound alarm button on the front panel. This relay will not operate upon activation of the remote AL
input. The relay will remain activated until the panel is reset.
13.4 1
st
stage alarm
The first stage alarm will operate upon activation of a zone that has been configured to contribute
to the extinguishant release decision and will de-activate only when the panel has been reset.
This relay will also operate upon activation of the panel mounted or a remote manual release
switch.
13.5 2
nd
stage alarm
The second stage alarm relay will operate when the panel enters the activated condition (i.e. the
release countdown timer has started) and will de-activate only when the panel has been reset
from the released condition.
13.6 Extract relay
The extract relay will operate when option
Ac
is selected at access level 2.
This provides a means to vent a room of extinguishant gases but prevents the gases from being
vented during a discharge.
