ESP ESPAN-04 Series User Manual page 8

Sequence : Automatic Reset
Standard sequence : ANSI/ISA-S18.1-1981 (Annunciator sequences & specifications)
STANDARD SIGNAL
VISUAL
LAMP
A-1-2-14
AUDIBLE
SOUND
Automatic reset occurs after acknowledged and the process condition has turned to
normal.
Alarm Sequence Chart
• Manual reset sequence
In this mode, the momentary fault inputs will be latched until acknowledgement and
reset to clear. Alarm device is silenced , lamp stop flashing and steady on when
acknowledged command.
Manual reset of the alarm can be done only process conditions return to normal.
• Auto reset sequence
In this mode, If alarm contact returns to normal before acknowledgement then the
alarm function will immediately reset on acknowledge stage.
• Input Indicator Function
This function is same as indicator lamp. When an alarm signel feed through an
assigned input of annunciator, the LED display lamp of that design fault will lid or
steady on . After alarm input returns to normal then the display lamp will automatic
off.
ESPAN04 Series – User Manual
NORMAL ALERT
OFF FLASH
OFF ON
- 6 -
RETURN TO NORMAL
BEFORE ACK
OFF
OFF
@ESPAN
ACK BEFORE
RETURN TO NORMAL 2*
STEADY ON
OFF
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RETURN
TO
NORMAL
OFF
OFF