Western Telematic AFS-16-1 Switch User Manual


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7-3
Alarm Configuration
7.2. The Over Temperature Alarms
The Over Temperature Alarms are designed to inform you when the temperature level
inside your equipment rack reaches or exceeds certain user-defined levels. There
are two separate Over Temperature Alarms; the Initial Threshold alarm and the Critical
Threshold Alarm.
Typically, the Initial Threshold alarm is used to notify you when the temperature within
your equipment rack reaches a point where you might want to investigate it, whereas the
Critical Threshold alarm is used to notify you when the temperature approaches a level
that may harm equipment or inhibit performance. The trigger for the Initial Threshold
alarm is generally set lower than the Critical Threshold alarm.
If the user-defined trigger levels for temperature are exceeded, the AFS-16 can also
enable the Contact Output on the AFS-16 Control Module's AUX connector.
To configure the Over Temperature Alarms, access the AFS-16 command mode using
a password that permits Administrator Level commands, and then use the Alarm
Configuration menu to select the desired alarm feature.
Note that both the Initial Threshold menus and Critical Threshold menus offer essentially
the same set of parameters, but the parameters defined for each alarm are separate
and unique. Therefore, parameters defined for the Critical Threshold Alarm will not be
applied to the Initial Threshold Alarm and vice versa.
Both the Over Temperature (Initial Threshold) alarm and the Over Temperature (Critical
Threshold) alarm offer the following parameters:
• TriggerEnable: Enables/Disables the trigger for this alarm. When Disabled, this
alarm will be suppressed. (Default = On.)
Note:Tocancelanalarmwithoutcorrectingtheconditionthatcausedthe
alarm,simplytoggletheTriggerEnableparameterOffandthenbackOnagain.
AlarmSetThreshold: The trigger level for this alarm. When temperature
exceeds the Alarm Set Threshold, the AFS-16 can send an alarm (if enabled.)
(Initial Threshold: Default = 90°F or 32°C, Critical Threshold: Default = 100°F or
38°C.)
AlarmClearThreshold: Determines how low the temperature must drop in
order for the Alarm condition to be cancelled. (Initial Threshold: Default = 80°F
or 27°C, Critical Threshold: Default = 90°F or 38°C.)
Note:TheSystemParametersmenuisusedtosetthetemperatureformatfor
theAFS-16unittoeitherFahrenheitorCelsiusasdescribedinSection5.3.
• ResendDelay: Determines how long the AFS-16 will wait to resend a message
generated by this alarm, when the initial attempt to send notification was
unsuccessful. (Default = 60 Minutes.)
• NotifyUponClear: When this item is enabled, the AFS-16 will send additional
notification when the situation that caused the alarm has been corrected. For
example, when Notify Upon Clear is enabled, the AFS-16 will send initial notification
when it detects that the temperature has exceeded the trigger value, and then send
a second notification when it determines that the temperature has fallen below the
trigger value. (Default = On.)
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