Geist RAC - Manual (Page 30)

30 Revision Date: 09/03/2014
Alarm Types
The RAC provides three types of alarm messages via E-Mail and SNMP:
 Trip: Occurs when a sensor value goes above a high trip threshold or below a low trip
threshold.
 Clear: Occurs when a sensor already in the Tripped or Unplugged state goes back into its
normal range.
 Unplugged: Occurs when a sensor with an alarm set loses contact with the main unit due
to the sensor being physically unplugged or another communications error.
Alarms can be added for set point, fan speed, and internal or external temperature sensors
displayed on the Alarms page. An alarm is added by pressing the “Add New Alarm Button” and
selecting the sensor value to be monitored from a drop down menu.
Thresholds
The user must set a trip threshold and type for each alarm that is added to the Alarms page.
The threshold type is chosen as either “High Trip” or “Low Trip” from a drop down menu when
the alarm is created. The threshold value is typed into a data window when the alarm is
created. Alarms are triggered based on the selected sensor’s data and the trip threshold type
and value. Alarm settings can be edited or deleted at any time.
Analysis of each unit is recommended before setting alarm thresholds as some of the values
monitored by the unit are relative values, whose scale will differ slightly between units. Allow
each unit to operate under normal, steady state conditions for several hours before setting
alarm thresholds. By allowing the sensors to operate for several hours, the user can better
understand what the normal variations are; thereby allowing the user to choose alarm
thresholds that will not trigger numerous false alarms.
Note: Changes in settings take a few moments to become active. Rapidly resetting alarm values may not
provide the desired results. Allow up to 2 minutes after changing a setting before modifying it again.