RXT-300 SmartWireless™
RXT-300 Wireless IM
Rev. 2.0
Page 18 of 41
AV1-DV2
Strobe Horn Combo
Alarm Station
V2-DV2
Dual Strobe
Alarm Station
A1-DV2
Horn Only
Alarm Station
Figure 15
Basic C1D2 Wireless Alarm Stations
Although not at Alarm station, the HMI Panel has four LEDs that provide a visible indication of the four alarm
outputs. The HMI LEDs will follow the state of the alarm outputs and are labeled ALM 1, ALM 2, ALM 3
and FAULT. Alarm 4 in Detcon detection systems is usually mapped to fault conditions such as
communication errors or sensor faults where Alarm 1-3 are usually mapped to threshold settings for sensors
3.4.1
Alarm Output Properties
Alarm outputs on RXT-300s can be configured with certain properties such as Energized / non-Energized,
Latching / non-Latching and Silence-able / non-Silence-able. These are configured for each RXT-300 and
only affect the Alarm outputs on that RXT-300. Energized / non-Energized determines the active state of the
Alarm output where Energized means the open collector output is grounded when the alarm is active and
non-Energized is the opposite. Latching / non-Latching determines whether the Alarm output is latched. With
Latching selected, if an alarm event ever occurred the Alarm output will be active regardless of the current
state of the alarm. Non-Latching causes the Alarm output to just follow the current state of any alarm
condition. The Silence-able property allows the user to turn off the Alarm output even though there is an
existing alarm. If the alarm goes away and comes back again, silence is removed and the Alarm output will
become active again. The Non-Silence-able setting does not allow the Alarm output to be silenced.
NOTE:
At power up or reset, the default for Energize / non-Energize on the RXT-300 is set to
Energized until the configuration is fully loaded. If the RXT-300 is configured for non-
Energize there will be a short period of time at power up or reset the external Alarm will
activate until power-up configuration is complete.
3.4.2
Alarm Zones
RXT-300s can be grouped into alarm Zones to allow Alarm Stations to generate alerts for a group of sensors in
a Zone. There can be up to 16 Zones defined by the user each RXT-300 can be assigned to one or more
Zones. For example if there were two sets of 3 Sensor Stations that were separated by a large distance the user
can define two Zones one for each set of 3 and the user could place an Alarm Station in each Zone. When an
alarm event occurs in Zone 1 only that Alarm Station would activate and the same would be true for Zone 2.
Now if an HMI Station were added it could be placed in both Zone 1 and Zone 2 and any alarm in the system
would show up on the four Alarm LEDs on the HMI. A “global” Alarm Station could also be added and
placed in both Zone 1 and Zone 2 and that Alarm Station would activate for any alarm in the system.
