System 9000TS
25
ISA F1A-1 – Automatic Reset First Up
PROCESS
SEQUENCE
VISUAL
AUDIBLE
ABNORMAL
OR NORMAL
FIRST ALARM
FLASHING
AUDIBLE
SEQUENCE
PROCESS
OFF
VISUAL
AUDIBLE
SILENT
NORMAL
NORMAL
ACKNOWLEDGE
WHILE ABNORMAL
(FIRST OUT RESET)
RETURN
TO NORMAL
FIRST TO
ABNORMAL
AUDIBLE
VISUAL
SEQUENCE
PROCESS
ABNORMAL
SILENT
ON
ACKNOW.
SUBSEQUENT
TO ABNORMAL
Sequence Features
1. Acknowledge and test pushbuttons.
2. Alarm audible device
3. Lock In of momentary first alarm only, no lock in of momentary subsequent
alarms
4. Flashing and audible indications for first alarm only, new subsequent alarms go
to the acknowledge state.
5. First out indication is reset and the audible is silenced when acknowledged.
6. Automatic Reset of acknowledged alarm indications when the process returns
to normal
7. Silence pushbutton can be used to silence the audible alarm only