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FX-350 Series Installation and Operation Manual
41
Waterflow Alarm
Waterflow inputs are sampled every second. If 10 samples are in alarm in any given 15
second period, an alarm condition is confirmed and the alarm is processed as for non-verified
inputs.
The alarm zone status indicator flashes whenever even one sample indicates an alarm
condition. If the alarm is confirmed the indicator will go steady, it will be turned OFF when 15
seconds elapses without any samples in the alarm condition. The waterflow retard operation
operates regardless of whether or not the system is in alarm.
Note: Do not use the retard operation with any external retarding device.
Non-Latching
Supervisory
When an un-bypassed supervisory input goes into alarm the common supervisory sequence
is activated. Un-bypassed relay, signal, and strobe outputs are updated according to their
programming and supervisory zone status indicators associated with the input are activated.
Supervisory activations are displayed on the shared display in the common queue with
supervisory as the second highest priority.
When a non-latched supervisory input is restored, outputs programmed to it also return to
normal unless they are also programmed to other active inputs. Zone display indicators will
also be updated to indicate that the input is no longer active and the message will be removed
from the shared display common queue. If there are no other active supervisory inputs the
common supervisory condition will be restored.
Latching
Supervisory
Latched supervisory inputs operate the same as non-latched supervisory inputs except that
the alarm condition is latched: restoration of the circuit (from alarm to normal) is ignored until
system reset. Not permitted in Canada unless done so by AHJ.
Monitor
Monitor input status may be reflected on monitor zone indicators and in the common queue,
with monitor having the lowest priority on the shared display. They may also be programmed
to relay, signal, and strobe outputs. When an un-bypassed monitor circuit goes into alarm,
the status display and programmed outputs are activated. When it restores the status display,
the outputs restore unless they are also programmed to other active inputs.
Trouble-Only
An alarm condition on an un-bypassed trouble only input initiates the common trouble
sequence as a non-latching trouble. The status is reflected on trouble zone indicators and in
the common queue on the shared display with trouble-only as the third priority. They may
also be programmed to relay, signal, and strobe outputs.
Note that the trouble condition initiated as a result of an alarm on a trouble-only input is
separate from the circuit or device supervision trouble.
Remote Switch
Inputs
Remote switch inputs may be used to provide remote control of system common controls.
Remote switches are processed as a toggle operation. When the circuit is activated it sends
an event through the system similar to pressing the switch on the front panel. When the
circuit is restored it is ignored. For example if a remote switch is associated with the fire drill
common control activating it once when drill is not activated will turn on drill and activating it
again will turn off drill.
Remote switches are supervised to ensure that they do not get "stuck" in the "ON" position. If
they remain active for more than 30 seconds a circuit trouble is generated. The trouble is non-
latching and goes away when the input is restored.
Remote switches themselves are not correlated to relay, signal, and strobe outputs although
the feature they are associated with may be.
Input Types
Description
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