Contact Inputs; Contact Outputs - Mircom FX-350 Series Installation And Operation Manual

Circuits and Devices
Drift Compensation
The FX-350 will automatically adjust for gradually increasing affects of dust and other accumulations of dirt in the
detectors. It will adjust the thresholds to compensate for a detector going dirty according to the gradual change in
the normal clean air value received. When it can no longer compensate for an increasingly dirty detector, a dirty
detector trouble is indicated for that device.
Auto Test
Periodically each detector is commanded to return an alarm value to test its ability to alarm. If it fails the test, a
trouble is indicated on that device. This trouble is latched until system reset.

Contact Inputs

Contact input modules on the addressable/analog device loop may be configured as any of the following input types:
• non-verified alarm inputs
• waterflow inputs
• non-latching supervisory inputs
• latching supervisory inputs
• monitor inputs
• trouble only inputs
• remote switch inputs

Contact Outputs

Contact output modules on the addressable/analog device loop may be configured as any of the following output
types:
• signals
• strobes
• relay outputs
Analog devices may be installed with relay or sounder bases. The outputs of these bases are activated when the
device active LED turns ON steady in response to an alarm. The command to activate the output is separate from
the command that activates the LED and they are not subject to the same restrictions as the LED. Output modules
configured as signals are not stroked by software at the current signal rate. When the system commands them to be
either in alert or in evacuation, the panel will simply activate them continuously. It is possible to provide stroked
operation by connecting the signal power to a conventional signal output which is stroking at the correct rate when
the device is active. Depending on the device, the system can detect open and short troubles and report it as an
output circuit trouble.
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