User guide

AN24 & AN28 Annunciators Instruction Manual
38
ISA Sequence F1M
First-Out Indication with Acknowledge and Reset Pushbuttons,
and No-Lock-In of Subsequent Alarms
Momentary Alarm Maintained Alarm
Sequence F1M Sequence F1M Flowchart
Switch Positions
Condition LED Horn Condition LED Horn
1
st
Pt Next Pt 1
st
Pt Next Pt
Normal
Off Off Off
Normal
Off Off Off
Alert
Flash Steady On
Alert
Flash Steady On
Normal
Flash Steady On RESET Pushbutton
RESET Pushbutton
Alert
Flash Steady On
Reset
Flash Off On ACK Pushbutton
ACK Pushbutton
Acknowledge
Steady Steady Off
Acknowledge
Steady Off Off
Normal
Steady Steady Off
RESET Pushbutton RESET Pushbutton
Normal
Off Off Off
Normal
Off Off Off
Condition Normal
1
st
Pt LED Off
Next Pt LED Off
Horn Off
Condition Alert
1
st
Pt LED Flash
Next Pt LED Steady
Horn On
Condition Alert
1
st
Pt LED Steady
Next Pt LED Steady
Horn Off
A
larm Condition
Ack
P
r
essed
Reset while
Normal
Ack
Pressed
Condition Normal
1
st
Pt LED Flash
Next Pt LED Off
Horn On
Reset while
Normal
Condition Normal
1
st
Pt LED Steady
Next Pt LED Off
Horn Off
Reset
while
Normal