Western Telematic AFS-16-1 manual Over Temperature Alarms

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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