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STANDARD OPERATING SEQUENCES
 
Products I Alarm Annunciators I STANDARD OPERATING SEQUENCES

The MINILEC Annunciation systems are programmed to operate as per following operating sequences confirming to ISA standards. Other sequences / non standard sequences are given as per customer’s requirement.

Minilec Sequence Code Operating Sequence Title ISA Std. Code
S1
S2
S3
S4
Manual Reset
Auto Reset
Ringback
First UP
M1
A1
R1-12
F2M-1

SEQUENCE S1 : Manual Reset (M1)
  Test, Silence Accept, Reset Push Buttons are external.
  Audible alarm can be silenced by pressing Silence (Mute) Push button.
  Manual reset of Accepted faults after process conditions return to normal.
  Operation test provided.

SEQUENCE S2 : Auto Reset (A1)
S2
  Test, Silence Accept, Reset Push Buttons are external.
  Audible alarm can be silenced by pressing Silence (Mute) Push button.
  Automatic reset of Accepted faults after process conditions return to normal.
  Operation test provided

SEQUENCE S3 : Ringback (R1-12)
S2
  Test, Silence Accept, Reset Push Buttons are external.
  Alarm & ringback Audible devices.
  Audible device or ringback alarm can be silenced by pressing Silence (Mute) Push button.
  Ringback visual & audible alarm when process status returns to normal.
  Operation test provided.

SEQUENCE S4 : First Out Manual Reset (F2M-1)
S2
  Test, Silence Accept, Reset Push Buttons are external.
  Audible alarm can be silenced by pressing Silence (Mute) Push button.
  Automatic reset of Accepted faults after process conditions return to normal.
  Operation test provided
   
Note:
P : Process Status, V : Visual Alarm Status, A : Audible Alarm Status, RB : Ringback audible alarm status.
 
 
 



Alarm Annunciators