Programming and Operating 4
Shield Fire, Safety and Security Ltd.
Shield A-XT Releasing Fire Control Panel - Installation and Operation Manual SEXTCP-OM
Revision E01.00
47 of 127
Double Zone Fire Condition
Upon receipt of a second fire condition when the control panel is switched to Automatic and Manual mode, the Abort
input is not active, and the Disable Extinguishant Sub-system function has not been invoked, the control equipment
will respond as above and as listed below:
• The second stage alarm output will operate. (NAC circuit S3)
•
The 2nd stage contact will operate.
• The release imminent indicator will operate
• The seven segment LED displays will indicate the time remaining until release in seconds.
• The extinguishant output will operate after the configured delay time and for the configured duration after which
it shall de-activate.
The fire control panel can reset a releasing count-down if the reset is performed before zero (0) and all inputs are
clear of alarm conditions. The reset of the releasing count-down can be performed while operating the fire control
panel in Access Level 2.
Abort Function
Abort is a is a temporary function that suspends the releasing count-down after contacts on a momentary-switch are
closed. Suspension of the releasing count-down occurs at 10 seconds. Activating the abort function prior to 10 sec-
onds continues the releasing count-down until the timer reaches 10 seconds.
Activating the abort function after 10 seconds causes an immediate suspension of the releasing count-down and the
timer holds at 10 seconds. The releasing count-down re-starts at 10 seconds when contacts on the momentary-switch
are opened. A releasing event occurs when the count-down timer reaches zero. An abort function overrides a manual
release function when the manual release is activated before the abort. The manual release function overrides the abort
function when the abort is activated before the manual release.
Silence/Sound Alarms
The Silence/Sound alarm button can only be operated at access level two which means that the Enable Control key
must be inserted and turned to the right. To silence the NACs, insert the Enable Control key, turn to the right and press
the Silence/Sound alarm button.
When the NACs have been silenced, the Zone Fire LEDs will change from flashing to a steady state. Pressing the
Silence/Sound alarm whilst the fire control panel is in this silenced condition, will cause the NACs to operate again.
The NACs can be toggled on and off with the Silence/Sound alarm button as required.
Reset
To reset the panel, insert the Enable key, turn to the right then press the Reset button. Latched inputs associated with
extinguishant section will reset only after the duration timer has elapsed once the activated condition has been
established.
Zone Trouble
Removal of a detector from it’s base or a trouble on any of the zone wiring will cause the Trouble LED and Zone
Trouble LEDs to flash, indicating the zone in which the trouble has occurred.
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