Sensaphone SCADA 3000 Users manual - Manual (Page 94)

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SCADA 3000 User’s Manual
Output Alarm: An output (pump) is programmed to set an alarm if it stays on for
more than 30 minutes (a 30 minute recognition time). The alarm will not be set
unless the pump has been on for 30 continuous minutes. If the pump shuts off
after 28 minutes, the recognition time will start over from 0 the next time the
pump turns on.
Variable Alarm: A calculation within a C program computes the average volume
of material traveling through a pipe. This variable is referenced as the input
source for an alarm. The calculation must result in a value that exceeds the pro-
grammed alarm limits, for the programmed recognition time, before an alarm
will occur.
When an alarm is detected, three things happen: 1) If any of the dialout destinations are pro-
grammed and enabled, the unit will begin dialing. 2) A record of the alarm will be entered into
the event log. 3) The alarm status will be set to reflect the type of alarm (1 for a general alarm;
2 for a low-level alarm; 3 for a high-level alarm). See Chapter 10 for more detailed information
regarding UAFs.
To program alarm information, click on Programming>Alarms, or click on the Alarms button on
the toolbar. The alarm status form will appear:
Figure 7: Alarm Status
Alarm programming includes three screens: Status, Setup, and Notification. The Status screen
shows the current state of any already programmed alarms. To check on them, use the arrow
buttons in the lower left to move through the list.
Alarm Name
Each alarm can have its own name (up to 24 characters) that can be used to describe the alarm.
Since alarms can be set from any source, it is important to enter a name and be as specific as
possible. If you set an alarm from an input, it is recommended that you use the same name for
both the Input Name and the Alarm Name.
State
This parameter describes the state of the alarm. It tells you whether or not the condition has
met the recognition time, if the alarm exists, if it has been acknowledged or if it has returned to
its normal range. A description of each of the possible messages is listed below:
No Alarm: No alarm exists at the present time. The alarm source is within its pro-
grammed limits.
Waiting: The source of the alarm is presently exceeding its limits but hasn’t met
the recognition time yet.
Alarm, Alarm High, Alarm Low: The source of the alarm has exceeded its alarm
limits for the programmed recognition time. If the source is a Normally Open
or Normally Closed alarm type, the word Alarm will display. If the source is an