12
Front Panel Indicators, Controls, and Operation
2.6 Common Controls
2.6.1 Signal Silence Button
Pressing the Signal Silence button after the panel is in alarm turns ON the Signal Silence LED
and deactivates any silenceable indicating circuits. Non-silenceable circuits are unaffected.
Signals re-sound upon any subsequent alarm. This button does not function during any
configured Signal Silence Inhibit Timer period. It also does not function if indicating circuits are
active as the result of a fire drill. In a Two Stage system, if the Auto General Alarm Timer has
not timed out, the Signal Silence button also performs the same function as the Acknowledge
button.
2.6.2 Fire Drill Button
The Fire Drill button activates all programmed and non-disconnected indicating circuits, but
does not transmit any alarms via the city tie or common alarm relay. The Fire Drill button may
be programmed to operate specific indicating circuits. The fire drill is cancelled either by
pressing the Fire Drill button again (toggle switch) or if the panel goes into a real alarm.
2.6.3 General Alarm Button
Activation of the General Alarm button immediately sends the panel into general alarm. It also
re-activates the signals if they have been silenced during alarm. The general alarm condition
remains active until the panel is reset. Silenceable signals can be silenced using the Signal
Silence button.
2.6.4 System Reset Button
The System Reset button resets the panel and all circuits:
2.6.5 Acknowledge Button (Two Stage Only)
If the panel is not configured for Two Stage operation, this button could be configured for a
different operation. If the panel is configured for Two Stage operation, activation of the
Acknowledge button while the Auto General Alarm Timer is timing (e.g. there is an alarm in the
panel but it is still in the first stage) cancels the timer and turns the Acknowledge LED on
steady amber.
• Resets all Latching Trouble Conditions • Resets all Initiating Circuits
• Resets 4-Wire Smoke Supply • Turns off all Indicating (NACs) Circuits
• Turns off Signal Silence, Acknowledge
and General Alarm LEDs
• Turns off Fire Drill
• Stops and resets all Timers • Processes inputs as new events
• Aux Disconnect is not affected • Reset cannot be activated until the Signal
Silence Inhibit timer has expired
• Resets devices activated by input
simulation and manual control
Attention: The System Reset can be global (all control panels) or by defined Node
group (one or more Nodes) as programmed using Mircom’s MGC-4000
Configurator Software.
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