Alarms are used to alert operators of conditions that need attention (e.g., high well level, pump didn't start when called to run, station is offline). The ability to view and acknowledge alarms is based on the user's permission level.
When an alarm occurs, the alarm button on HT3's system tray turns red and begins blinking. A button that is red, but not blinking, indicates that there are active alarms, but they have all been acknowledged. When you place the mouse pointer over the button, the status bar displays the total number of alarms and also shows the number of active alarms and the number of unacknowledged alarms.
Alarm Notification Options
Alarm activity can be viewed in HT3's Alarm Viewer. Alarm Viewer lists all active, acknowledged, and cleared alarms, and gives you the ability to acknowledge the active and cleared alarms. You can open Alarm Viewer by clicking the alarm button in the system tray or by clicking View on the HT3 main menu and then clicking Alarms on the View submenu.
In addition, alarms can be configured to:
By having the system announce locally or send out alarm notifications, you'll always know when alarms occur - even if you're away from the computer or away from the plant.
If you purchase the optional HT3 Mobile package, you'll also be able to monitor and acknowledge alarm conditions using your smart phone.
HT3 maintains a log of all alarm activity, including information on who an alarm was acknowledged by and the time the alarm was acknowledged. This information can be viewed for an individual alarm from Alarm Viewer or for all alarms by creating an Alarm Log Report (one of the advanced reports included in HT3).
To view information on an acknowledged alarm (displayed in yellow text), you click the telemetry address of the acknowledged alarm. The selected address is surrounded by a broken, yellow line and alarm's color changes to yellow.
If you click the telemetry address of the acknowledged alarm, the Message bar displays the date the alarm occurred, the login of the individual who acknowledged the alarm, and the date and time at which the alarm was acknowledged.
Alarm Viewer is one of the key parts of the HT3 SCADA software. Its user-friendly environment provides you with important, up-to-the-moment, alarm-activity information, which enables you to quickly respond to critical situations.
Alarm Viewer features the ability to acknowledge alarms if your user account has been granted acknowledgement permission. When an alarm is acknowledged, Alarm Viewer logs the user name of the individual who acknowledged the alarm, and the date and time the alarm was acknowledged. This information can be viewed at any time by clicking the telemetry address of the acknowledged alarm.
Alarm Viewer can be opened from the HT3 menu bar or by clicking the Alarm icon that is displayed in HT3's system tray. This icon will turn red and begin blinking when an alarm occurs.
Alarm Viewer's Interface
Features the Time, Address, Name, and Description headers. Click on a header to sort alarms using that criteria. Click on the same header again to switch between descending and ascending order.
Displays all pertinent alarm information: Time alarm occurred, telemetry address of point, user-defined name of point, user-defined description of alarm (as defined in Configuration Editor).
Sort by Status Button
Sorts the alarm list by status. Click the button to display the alarm list in the following order: Alarm (red), Acknowledged (yellow), Cleared (green). Click the button again to reverse the order.
Message Bar (area directly beneath Display area)
Displays important information including:
Alarm Types and Colors
Alarm Viewer features three alarm categories. Each of these alarm types appears in a different color in the Display area, so that they are easily recognizable. The three alarm categories are: Alarm (red), Acknowledged (yellow), Cleared (green).
Alarm Viewer offers five ways to sort alarms. These are:
Delay and Snooze
When you configure an alarm, you have the option of specifying a Delay and/or Snooze time. For this reason, it is important to frequently view alarm activity via Alarm Viewer.
An alarm configured with a Delay or Snooze time is not displayed in Alarm Viewer until the specified time has elapsed.
To acknowledge alarms, you must be logged in with an account that has been granted Acknowledge Alarms permission. To acknowledge an alarm, you simply click the telemetry address of the alarm you want to acknowledge.
The Message bar displays the user name of the individual who acknowledged the alarm and the time the alarm was acknowledged.
When an ACKNOWLEDGED alarm clears (is no longer in an alarm state), it is removed from the alarm list.