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Pressing the Acknowledge/Step or Alarm Silence key will cause the pulsing piezo to silence and the
system Trouble LED to change from flashing to on steady. This block acknowledgment occurs
regardless of the number of troubles, alarms and supervisory events active in the system. When the
Acknowledge/Step key is pressed and at least one new alarm or trouble exists in the system, the
'acknowledge' message is sent to the printer and history file. If the trouble clears, either before or
after the Acknowledge/Step key is pressed, the 'clear trouble' message is sent to the printer and
history file.
If all troubles clear and there are no supervisory or fire conditions active in the system, the system
returns to normal mode operation and the System All Normal message is shown on the LCD display
and sent to the history and printer files. The auto-restore feature will restore cleared troubles even
if the troubles were never acknowledged. Note that pressing the Alarm Silence key when only
troubles exist in the system will have the same effect as pressing the Acknowledge/Step key except
the Alarm Silenced LED will light.
4.5 Alarm Operation
Alarm operation is similar to trouble operation with the following differences:
•
The piezo sounder produces a steady output as opposed to a pulsed output
•
The Fire Alarm LED flashes 1 second On and 1 second Off
•
The LCD displays Alarm along with the device name, type, address, adjective/noun,
associated zones and time/date
•
Communicate the alarm to the Central Station
•
Alarms latch and are not allowed to clear automatically
•
Alarms activate software zones if so programmed
•
Timers for Silence Inhibit, Autosilence and Trouble Reminder are started
•
Alarms activate the general alarm relay and general alarm zone Z00
•
The trouble relay is not activated
•
Store event in history buffer
•
Terminate upload or download communications
A typical alarm display would be as illustrated below:
Note that the device type, which in this example is PULL STATION, can be any other
programmable alarm type.
The information displayed in the above example provides the following information:
•
First line in display:
The type of event; in this example ALARM indicating an alarm condition
Device type identifier; in this example, PULL STATION indicates a manual pull box.
Other device type identifiers which can be displayed include SMOKE (ION) for Ionization
Detector, HEAT for Heat Detector, CONTROL for Control Module and MONITOR for
Monitor Module, PULL STATION for a manual pull box, etc. Refer to "Edit Detector" on
page 58, "Edit Module Screen for Monitor Module" on page 68 and "Edit Module Screen
for Control Modules" on page 77 for information on additional device types.
•
Second line in display:
<ADJ>; refers to the user programmed adjective descriptor from library list resident in the
control panel or custom entry via PC.
MS-9050UD PN 52413:C 01/23/08
ALARM
PULL STATION
<ADJ> <NOUN>
10:00A 090805 1M001
Operating Instructions
Z000
151
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