PEGAsys™ LV
April 2003
76-100016-002
2-7
2-6
MODES OF OPERATION
The PEGAsys LV system has four modes of operation.
Each mode has different indications and actions required.
The following paragraphs describe each mode and the in-
dications and actions to be taken if required.
2-6.1
Normal Standby Mode
This is the typical mode of the system. In this mode, no
alarm, trouble or supervisory conditions exist in the sys-
tem. The system display will show the time and date. In
this mode, the LCD could read:
SYSTEM STATUS NORMAL 11:06 AM_05-04-90
40_CHARACTER_CUSTOM_MESSAGE
The system provides an option which allows the System
Status Normal message to be replaced with a display of
battery charging voltage and current for the system standby
batteries. For example:
PS01_26.0 V_0.10_A_ _ _ _ _11:06 AM_05-04-90
40_CHARACTER_CUSTOM_MESSAGE
The green AC POWER LED will be illuminated to indicate
that the system’s main power source is normal.
Note:
In the Normal Standby Operation state, it is pos-
sible for the 80-character display to show data
other than the time and date. This occurs when
the system menus are being accessed either lo-
cally or remotely through one of its serial ports.
This condition will be indicated by the menu se-
lections being displayed on the display panel be-
ing illuminated.
In the Normal Standby Mode, no indicating LEDs will be
illuminated other than the “AC POWER.”
2-6.2
Active Alarm Mode
The system enters an alarm mode if a device (or devices)
has detected an alarm condition, such as smoke/heat
above the alarm threshold level. There are two types of
alarms which can occur:
1.
Device Alarm–An alarm in which a device has com-
municated the alarm status properly to the Central Con-
trol Panel, by providing the alarmed device address
for indication to the operator.
2.
Zone Alarm–An alarm condition detected by one or
several devices, but which cannot be reported by a
specific device due to a malfunction in communica-
tions between the system and the alarmed device(s).
This is a redundant feature to increase system reli-
ability and is called FailSoft Mode.
Note:
A device can signal a zone alarm to the system
during some communication failures.
2-6.2.1
ALARM MODE INDICATIONS
The following indicates the system is in its alarm mode of
operation:
•
The red “ALARM” LED will be illuminated and there
will be a continuous audible signal by the system buzzer
at the panel, and
•
The 80-character display will cycle between all cur-
rently active alarms. See Figure 2-4 for example.
1080 ALARM _ _ Photoelectric _ Detector
_ _ _ 40 _ Character _ Location _ Message
Device Location (40 Characters)
Device Type
State
Alarm On
Alarm Off
Device Address
(1001-1255)
Figure 2-3. Active Alarms Example
Note:
If the alarm is a zone alarm, the Device Address
“1000” will be displayed.
The outputs which have been previously programmed for
activation upon alarm by the specific devices will be turned
on (e.g., signal audible signaling devices, control relays
for HVAC shutdown or elevator recall).
2-6.2.2
ALARM MODE USER ACTION
The following steps should be performed when the sys-
tem is set into alarm:
1.
Press the display panel’s <ACKLDGE> button to ac-
knowledge the displayed alarm condition. The 80-char-
acter display will continue to cycle between any
remaining alarms which have not been acknowledged.
The <ACKLDGE> button must be pressed once for
each alarm received at the panel.
2.
Once all current alarms have been acknowledged, the
alarm indicating circuits (audible devices) can be si-
lenced by operating the “SILENCE” switch.
3.
After all of the current alarms have been acknowl-
edged, verify that the display reads: XXX ALARMS
REMAIN. The “XXX” representing the total of all ac-
tive alarms. All active alarms can be viewed on the
display by pressing the <SCROLL> button.
Note:
Only the first 64 alarms will be displayed. Subse-
quent alarms over the initial 64 will not be dis-
played, even when any or all of the first 64 alarms
clear. However, all alarms—regardless of the to-
tal—will be processed in the EOC. For a complete
list of active alarms, access the event buffer menu
using the CCM keypad.
4.
Any subsequent alarms will cause the alarm audible
circuits to resound. Each additional alarm must be ac-
knowledged before the alarm indicating circuits can
be silenced.
5.
When a device goes out of alarm, the display will indi-
cate the device address and produce an alarm off
(AOF) message (non-latching mode). For example:
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