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11.3.3.2
Configuring Alarm and Buzzer Outputs
To select the alarm output to be configured, click once on the button for the alarm output
and enable it by sliding the enable key
right.
Fig. 35
– Alarm 1
The alarm output may be timed using the
Time on
and
Time off
parameters. Depending on the set values, the output may behave in the following ways:
If the device is configured with alarm
Lo
,
xi
,
L
--
x
or
-
Lx
-
, the
Error condition
parameter allows for configuring the alarm output if the
temperature and relative humidity sensor fails. In this case, the output will be turned on or off according to the value configured in this parameter.
In some applications using the
RHT
Climate
Transmitter
, the occurrence of alarms right when turning the device on may need to be disregarded. A
typical example is an application in which an environment needs to be kept cool. Supposing that the alarm is configured to go off when
temperatures is lower than -10 °C or higher than 2 °C, if the initial environment temperature is 25 °C when the
RHT
Climate
Transmitter
is turned
on, the alarm will be activated. To inhibit this initial activity, you can enable
Initial alarm blocking
. With initial blocking enabled, the device will need
to reach a non-alarm condition for an alarm event to activate the output.
The buzzer* activation can be linked to each alarm output. As such, whenever the alarm output is turned on, the buzzer will be activated, abiding by
the buzzer timing configurations. To link the buzzer to the alarm output, the
Buzzer
parameter must be enabled.
*The buzzer can only be linked to an alarm output in LCD models.
To select the buzzer configurations, click once on the button
and enable it by sliding the enable key right.
Fig. 36
– Alarm 3
The buzzer configurations are similar to those of alarms 1 and 2.
