Configuring NAC Outputs
Settings are provided in the panel GUIand Loop Explorer 2 for controlling the NAC outputs of the Aura Fire
Alarm ControlPanel. Selections are available in these utilities for providing outputs with synchronization or
various forms of constant power. Settings are also provided to allow the Alarm Silence button to operate on the
front panel in various modes.
Review the settings described below to configure each NAC output for operation.
Output Options
General Alarm and Emergency are selected as default conditions. Alternative output options for this
field include Auxiliary Output, Pre-Alarm Output, Supervisory Alarm, and Trouble. Do not select the
General Alarm option if the NAC channel is to be controlled by cause-and-effect programming.
Strobe
Strobe Output is not selected for operation as a default condition. Selecting this field allows the user
to define which synchronization protocol to be used.
NAC AUX 24V DC
When the Strobe option above is not selected, Off is selected as the default operating condition.
Options for this output are continuous constant power, door holder, and resettable.
l Continuous constant power provides a voltage output comparable to AUX 24V.
l Door holder outputs lose power during fire alarm conditions and/or during ACpower loss.
l Resettable causes power loss that lasts 4-5 seconds each time the panel is reset.
Alarm Silence
Each NAC is configurable in reaction to the Alarm Silence button on the front panel. Edit properties
of the NAC channel in Loop Explorer 2. Select the box for Silencing if NAC silencing is required on
this channel. If Internal Synchronization Protocols are in use, an option is also available to Silence
the strobe. Failure to check the Strobe Silence box will cause horns to be silenced with continued
operation of the strobe.
For more details, refer to NAC Output Specifications.
SHIELD Fire, Safety & Security Ltd
Aura Fire Alarm Control Panel Installation Manual
Version 1.00 |June 2019 |MAN-1431VS
Page 58
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