Active Supervisory Signal Mode of Operation 3. Operation of the Control Panel
NFS-640 Operations Manual P/N 51334:B 10/03/2003 29
Active Supervisory Signal Mode of Operation
How the Control Panel Indicates an Active Supervisory
The system goes into Supervisory mode when a monitor module point programmed with a Supervisory
type code activates. When a Supervisory point activates, the control panel does the following:
• Produces a warbling audible tone
• Turns on the Supervisory relay (TB10)
• Flashes the
SUPERVISORY LED (yellow)
• Displays one of the Type Codes listed in Table 6.
•Displays
ACTIVE in the status banner on the control panel, along with information specific to
the device
• Sends a Supervisory message to the LCD display, History buffer, and installed printers,
terminal mode LCD-80s, and CRT-2s
Note: If a fire alarm exists, and there are silenced alarms (the SIGNALS SILENCED LED is lighted), a Supervisory alarm
will resound the panel sounder.
A Typical Supervisory message that appears on LCD display:
Figure 12 Sample Supervisory Signal Message
How to Respond to an Active Supervisory
If a Latching Supervisory Type Code Displays
Some Supervisory Type Codes latch the control panel (Refer to Table 6 for a list of these type codes). To
return the control panel to normal operation, you must correct the condition causing the supervisory
condition, then reset the control panel. Take the following action:
Note: If a fire alarm exists, and there are silenced alarms (the SIGNALS SILENCED LED is lighted), a Supervisory alarm
will resound the panel sounder.
1. Press the ACKNOWLEDGE/SCROLL DISPLAY key to silence the panel sounder and switch the
SUPERVISORY LED from flashing to steady—regardless of the number of troubles, alarms, and
supervisory signals. The control panel sends a Supervisory message to the History buffer and
installed printers, terminal mode LCD-80s, and CRT-2s.
2. Correct the condition that activated the supervisory point.
3. When you finish correcting the latching supervisory condition, press the
SYSTEM RESET key to
return the control panel to normal operation (indicated by the “System Normal” message). The
control panel sends a “System Normal” message to the LCD display, History buffer and installed
printers, terminal mode LCD-80s, and CRT-2s.
ACTIVE TAMPER INTENSIVE CARE UNIT
EASTERN WING Z004 03:19P 071401 2M147
Status Banner
Type Code
Custom descriptor for
this device location
Device address
Time and date of trouble
Zone
Extended 12 character
custom label
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