Alarm Annunciators
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)
- 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)
- Test, Silence Accept, Reset Push Buttons are externa
- 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)
- 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 norma
- Operation test provided
