Honeywell VRX180 What happens during an alarm, Acknowledging alarms, Display Alarm History

Online Operation Using Menus

What happens during an alarm

•A flashing red alarm indicator appears on the bottom of all screens. (The alarm must be acknowledged to stop the flashing.) On displays where the alarm point appears, the value is red and a red indicator appears.

•The alarm is entered into the active alarm summary which can be viewed at any time. The alarm summary contains the point identification, a description of the alarm, the sense (high, low rate, etc.), the time of occurrence and the current value of the point.

•When the alarm clears, the time of occurrence and the time of clearing will both be entered into the Alarm History, which is an ongoing record of the occurrence and clearing of all alarms.

•If so configured, the alarm occurrence will also be logged on a summary list stored on floppy disk (see Data Storage, section 4.26).

•If so configured, the alarm triggers a discrete output relay. The relay returns to normal state only when the alarm is cleared.

Acknowledging alarms

When an alarm occurs, it must be acknowledged by the operator to stop its indicator from flashing. Acknowledging an alarm does not clear the alarm. See Table 7-6for procedure.

		Table 7-6 Alarm Acknowledgment Procedure
Step		Action
1	Select ACCESS SUMMARIES from online menu.
2	Select DISPLAY ALARM SUMMARY to display a list of active alarms. Up to 4 pages (14 alarms)
		can be listed. Unacknowledged alarms will be flashing. Use the Up Arrow and Down Arrow buttons
		to view the various pages of the display, as desired.
		Display Alarm Summary can also be accessed by pressing the Display button, if the Alarm Summary
		display was assigned to that button. See Section 4.18.
3	Press the Up Arrow or Down Arrow button and a cursor will appear on the display. Use the Up
		Arrow or Down Arrow button to position the cursor on a flashing alarm and press Enter to
		acknowledge the alarm. The flashing will stop and the cursor will disappear.
		If you do not press any button for a period of 5 seconds, the cursor will disappear. This is a safety
		feature, because while the cursor is visible on the display, the display is temporarily disabled and a
		new alarm will not be shown.
4	If there are more flashing alarms, press the Up Arrow and Down Arrow buttons to restore the cursor.

Display Alarm History

The Alarm History display is a multi-page display which lists information on cleared alarms. The most recent 25 cleared alarms will be shown, with the oldest being dropped from the list when a new alarm clears and is logged in.

The Alarm History includes the descriptor and tag identifiers of the alarm, the type (high, low, high rate, etc.), the setpoint value at the time the alarm occurred and the date and times of the occurrence and clearing of the alarm (designated as IN and OUT times, respectively).

Use the Up Arrow and Down Arrow buttons to view the various pages of the display, as desired.

Display Diagnostics

A Diagnostic is a displayed error message that indicates a serious error or failure has occurred. See Section 9 for diagnostic descriptions and possible causes.

Video Recorder – User Manual 229