32 NFS2-640 Operations P/N 52743:L4 06/10/19
Operation of the Control Panel Disabled Points Mode of Operation
An Action Pre-Alarm latches until you reset the system - even if the detector sensitivity drops
below the Action level. Zone F09 activates - but Zone Z00 (general alarm) and the trouble and
alarm relays do not activate. The fifth zone programmed, not the first four, in the detector’s CBE
activates. A subsequent alarm condition for this detector clears the Action indication from the LCD
display.
Interpreting Pre-Alarm Type Codes
The Type Code that displays in the Pre-Alarm warning indicates the function of the point that initi-
ates the Pre-Alarm warning. Refer to the Detectors section of Table 3.1 for the Type Codes that can
appear in a Pre-Alarm warning, and for descriptions of those Type Codes.
3.9 Disabled Points Mode of Operation
The control panel indicates disabled points by displaying a screen for each disabled detector, moni-
tor module, and control/relay module. Disabled points do not cause an alarm or any Con-
trol-by-Event activity. If more than one point is disabled, the control panel displays by priority,
mimicking the alarms.
When one or more points are disabled, the control panel does the following:
• Holds all disabled output points in the off-state
• Flashes the
SYSTEM TROUBLE LED
•Lights the
POINT DISABLED LED
• Sends a Disabled Point message to the LCD display, History buffer and installed printers,
FDU-80 annunciators, and CRT-2s
• Displays a message for each disabled point
Figure 3.14 Sample Disabled Point Message
3.10 Non-Alarm Mode of Operation
3.10.1 Purpose of Non-Alarm Points
Non-Alarm points are addressable monitor modules programmed with one of the Non-Alarm Type
Codes listed in Table 3.5. Non-Alarm points, except Non-Fire, operate like monitored system func-
tions that can produce troubles—but with the differences shown in the following sections.
CAUTION:
DISABLING A ZONE DISABLES ALL INPUT AND OUTPUT DEVICES ASSOCIATED WITH THE
ZONE.
Disable message
Type Code of the disabled device
Address of the
disabled device
DISABL TAMPER INTENSIVE CARE UNIT
EASTERN WING 03:20P 041515 1M159
Custom descriptor for
this device location
Time and date of trouble
Extended 12 character
custom label
Monitor Modules
Type Code
Latching
(Y/N)
Purpose What it does
ACCESS MONTR N Used for monitoring building access Activates CBE
Table 3.5 Non-Alarm Type Codes (1 of 2)
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