User guide

AN24 & AN28 Annunciators Instruction Manual
39
ISA Sequence F2M
First-Out Indication with Acknowledge and Reset Pushbuttons
Momentary Alarm Maintained Alarm
Sequence F2M Sequence F2M 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 ACK Pushbutton
ACK Pushbutton
Acknowledge
Steady Steady Off
Acknowledge
Steady Steady Off
Normal
Steady Steady Off
RESET Pushbutton RESET Pushbutton
Reset
Off Off Off
Normal
Off Off Off
Condition Normal
1
st
Pt LED Off
Next Pt LED Off
Horn Off
Return
to Normal
Reset
while Normal
Condition Alert
1
st
Pt LED Flash
Next Pt LED Steady
Horn On
Condition Normal
1
st
Pt LED Steady
Next Pt LED Steady
Horn Off
Condition Any
1
st
Pt LED Steady
Next Pt LED Steady
Horn Off
A
ck Pressed
A
larm Condition