2. Using the Control Panel Control Keys
4Unimode 400 Operations PN 50709:A 10/20/97
Control Keys
The control panel provides five control keys, Acknowledge/Step, Alarm Silence, Alarm
Activate, System Reset, and Lamp Test.
Acknowledge Step Use the <Acknowledge/Step> key to respond to new alarm or
trouble signals. Pressing <Acknowledge/Step> causes the control panel to do the
following:
•silence the control panel sounder;
•change all indicators from flashing to steady;
•send an Acknowledge message to the history file, an optional printer, and an
optional ADT-LCD-80; and
•send a signal to silence the sounder on the ADT-LCD-80 and ACS annunciators.
You can also press the <Acknowledge/Step> key to display multiple alarms or troubles.
If more than one alarm or trouble exists, the control panel displays the next alarm or
trouble for 3 seconds (or until you press <Acknowledge/Step>), then displays the next
alarm or trouble.
Alarm Silence Use the <Alarm Silence> key to silence the control panel sounder as
well as sounders connected to Notification Appliance Circuits. Pressing <Alarm
Silence> causes the control panel to do the following:
•turn off the control panel sounder;
•turn off all silenceable output circuits;
•light the Alarm Silenced LED; and
•send an Alarm Silenced message to the history file, optional printer, and an
optional ADT-LCD-80.
Alarm Activate Use the <Alarm Activate> key to test notification appliances. Press
and hold the Alarm Activate switch for 2 seconds (to prevent accidental activation).
The control panel does the following:
•turns on all silenceable NACs;
•turns off the Alarm Silenced LED; and
•sends a Manual Evacuate message to the history file, optional printer, and an
optional ADT-LCD-80.
System Reset Use the <System Reset> key to reset the control panel. Press <System
Reset> and the control panel does the following:
•turns off all alarm-activated M500CH modules and NAC circuits;
•breaks resettable power to four-wire detectors; and
•sends an All Systems Normal message to the history file, optional printer, and an
optional ADT-LCD-80.
Any alarm or trouble that exists after a System Reset reactivates NACs, control outputs,
and panel audio and visual indicators.
Lamp Test Use the <Lamp Test> key to test the control panel LEDs and sounder.
Press and hold <Lamp Test> and the control panel does the following:
•lights all control panel LEDs;
•turns on the control panel sounder; and
•lights all segments of the LCD display.