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Indicators, Controls and Operations
The Main Display Panel on the Main Fire Alarm Control Board consists of:
• 18 common LED Indicators (top half of display)
• 8 Common Buttons (top half of display)
• Up to 12 Initiating Circuit Alarm LEDs and 12 Initiating Circuit Trouble LED Indicators
• 4 Indicating Circuit LEDs (labeled NAC - Notifying Appliance Circuit)
• Up to 16 disconnect buttons (12 for initiating circuit and 4 for indicating circuits)
LED Indicators may be amber, red, or green, and may illuminate continuously (steady), or at
one of two flash rates.
• Fast flash (Supervisory)- 120 flashes per minute, 50% duty cycle
• Trouble flash (Trouble)- 20 flashes per minute, 50% duty cycle
Note that each display is supplied with laser printer printable paper labels for sliding into the
plastic label template on the panel. For the Main Display, the paper label is Mircom# NP-2005;
this includes English and French versions.
9.1 Common Indicators
9.1.1 Buzzer
The buzzer is activated by any of the following events:
If the buzzer is turned on in response to a Non-Latching Trouble or Supervisory, it is turned off
if the condition causing it goes away and there is no other reason for it to be on.
9.1.2 A.C. ON LED
The green AC ON Indicator illuminates steadily as long as the main AC power is above
minimum level. The LED turns off when the level falls below the power-fail threshold and the
panel is switched to standby (battery) power.
9.1.3 COMMON ALARM LED
The red COMMON ALARM LED illuminates steadily whenever the panel detects an alarm
condition on any initiating circuit. Pressing the GENERAL ALARM button also turns on the
COMMON ALARM LED. The LED remains on until the SYSTEM RESET button is pressed.
Note: There are different labels for two stage operation.
Fire Alarm Steady
Supervisory Alarm Fast flash
Trouble Trouble flash rate
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