Status Indicator LED Indications 4
Man-1453 Rev.01
Sigma ZXT SI Product Manual
11
Section 4
Status Indicator LED Indications
Sigma ZXT Status Indicators are provided with either 6 or 10 status LED’s dependent on the model number. These
LED indications are to supplement the Extinguishing Control Panel. Further information relating to the LED indica-
tions and their purpose are as follows:
Manual Only
An amber LED which indicates that the extinguishing system has been placed in manual mode.
In “Manual” mode the Extinguishing Release can only be triggered through manual intervention i.e. operation of a
Manual Release Push-button on the Panel/Status Indicator or operation of a Manual Release Call Point. Automatic
detection zone alarms will not activate the extinguishing release system when in Manual Mode.
Auto/Manual
An amber LED which indicates that the extinguishing system is in Auto/Manual Mode.
In Auto/Manual mode activation of the extinguishing release can be triggered by a combination of the automatic de-
tection zones or by operation of the Manual Release Push-button or Manual Release Call Point.
Hold Activated
An amber LED which Illuminates when the Hold circuit has been activated.
Activation of the hold circuit during the gas release countdown will temporary “HOLD” the release countdown timer,
the release countdown timer will continue counting down once the hold input has deactivated.
Disabled
An amber LED which Indicates that either the Extinguishant Release system or the Manual Release function has
been disabled, the LED will illuminate the LED constantly or will flash the LED dependent on the disablement status:
Extinguishing Disabled
LED will illuminate constantly - Extinguishing disablement prevents a gas release occurring while active.
Manual Release Disabled
LED will flash - This prevents the panel from being activated by a Manual Release Push-button on the Control
Panel or Status Indicator, also prevents activation from a manual release input.Extinguishant release can still
be activated through the use of automatic detection devices.
Imminent
A red LED which Indicates that 2nd stage activation has been triggered and release of the extinguishant is imminent.
Released
A red LED Indicates that extinguishant has been released into the protected area.
10 LED status indicators provide the following additional indicators:
Fire Zone ‘n’
Three red LED’s which when illuminated indicate a fire on the associated detection zone 1, 2 or 3.
Fault
An amber LED Indicates an active fault condition on the system, extinguishing control panel will provide specific de-
tails on the fault type.
