Ronan X16PDM User Manual
Page 34
Rev 1.0 Series X11CA Hardware Manual
3. Event Sequences
Hardware Control-© 2002 Ronan Engineering
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A
Automatic Reset:
The sequence returns to the normal state automatically, after the event
returns to normal and acknowledged.
M
Manual Reset:
The sequence returns to the normal state, after the event returns normal,
acknowledged, and reset.
3.3 First-out Sequence
First out sequences indicate which one of a group of alarm points operated first.
To accomplish this, the visual display of the first alarm event must be different
from the visual display of the subsequent alarm events in that group. Only one
first out alarm event can exist in the group. The first out sequences are designated
by a combination of the first out designation, the basic sequence letter, and the
option numbers.
F1
No subsequent Alarm State:
The F1 family of sequences differentiates the first alarm event of the
group from the subsequent events by flashing its lamp and activating its
horn. Clearing of the first alarm event allows the system to accept the
next alarm in the group as the First out.
F2
No subsequent Alarm Flashing:
The F2 family resets the first out alarms with the operation of the
Acknowledge pushbutton. The first out alarm and subsequent alarms
operate as the F1 family. Clearing of the first alarm event allows the
system to accept the next alarm in the group as the First out.
F3
First Out Flashing and Reset Pushbutton:
Additional types of flashing are added to identify new and
acknowledged first alarms. A first out reset pushbutton is added to reset
the first alarms, whether the event has returned to normal or not.