Phason Supra-RS, Руководство пользователя

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Programming the alarm and display settings
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Another important setting is alarm silencing. Silencing temporarily disables an alarm setting after an
alarm has been acknowledged. This prevents the alarm relay from activating immediately after
acknowledging the alarm. If the alarm condition is still present after the silencing period, the alarm
relay activates again.
You can set the silencing duration to be from 0 seconds to 30 minutes. If you set it to 0 seconds,
acknowledging the alarm will not deactivate the relay; the alarm relay remains active until the alarm
condition goes away.
Besides the standard high and low temperature alarms, the Supra has many other alarm conditions.
For a complete list and descriptions, see the
Alarm settings worksheet
on page 142.
How alarm settings work
Let’s say the
high temperature alarm
setting is 85.0°F, the
minimum duration
is 5 minutes, and the
silencing duration
is 15 minutes. If the temperature rises to 86 degrees, but drops below 85 degrees 2
minutes later (before the
minimum duration
of 5 minutes), the alarm relay does not activate.
If the temperature rises to 86 degrees and stays there for 5 minutes, the alarm relay activates. The
alarm relay remains active until a user acknowledges the alarm or the temperature drops below the
high temperature alarm
setting. After the alarm has been acknowledged, if the temperature remains
above the
high temperature alarm
setting, the relay activates again in 15 minutes (after the
silencing
duration
).
How alarm biasing works
The purpose of alarm biasing is to prevent the alarm from sounding on very hot days when the
temperature
set point
cannot be maintained. The
bias temperature
is added to the
high temperature
alarm setting
if the outdoor temperature is higher than the
high temperature alarm setting
.