Ronan X16PDM - Manual (Page 36)

Rev 1.0 Series X11CA Hardware Manual
3. Event Sequences
Hardware Control-© 2002 Ronan Engineering 32
3.4.2 F1A-1
First Out with Automatic Reset
The First Alarm operates as a basic sequence A. Subsequent alarms operate as a
status lamp. The visual display of the subsequent alarms is steady on until the
events return to normal, at which time the lamplights go off.
Key applications:
1. If First out is the only alarm of importance.
2. Current status of the subsequences is of interest.
3. Minimum operator action is preferred for the subsequent alarms.
4. Subsequent alarms must lock-in and be annunciated by audible and
visual flashing, see sequence F3A.