Alarm Operation - Fire-Lite MS-9200UDLS Manual

Operating Instructions
– OPEN - indicating an open circuit on an addressable device
– DIRTY1 - maintenance alert indicating that a detector is near but below the allowed alarm
limit and is in need of maintenance before the performance is compromised
– DIRTY2 - maintenance alert indicating that a detector needs immediate maintenance since it
has been within 80% of its alarm threshold for 24 hours
– INVREP - maintenance alert indicating a hardware or communication problem in the
detector
– TEST F - indicating a detector has failed the automatic test operation which functionally
checks its sensing chamber and electronics
– INV ID - indicating that an incorrect device code (Type ID) has been programmed for an
installed device (for example, Photo has been programmed but an Ion detector has been
installed)
– SW TBL - indicating a module has failed the testing of its Class A switching relay
– BLOCK - indicating that a beam detector's beam is totally blocked
– ALIGN - indicating that a beam detector is in beam alignment mode
• Fourth line in display:

Time; the current time in this example is 10:00A which represents 10:00 AM

Date; the current month, day and year in this example is 01 for January, 08 for the 8th day of
the month and 01 for the year 2001

Device Address; 1D001 in this example 1 represents SLC Loop, D represents a detector and
001 represents device address 001
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
136 MS-9200UDLS Series Manual — P/N 52750:H 4/14/2014
Alarm Operation