Alarm Handling - Alarm Severity
Fusion4 MSC-L Part No.: 4418309_Rev09
6 - 4 Installation & Operation Manual
Honeywell
1. Initially there are no active alarms available, hence the severity is
None for all the loading arms.
2. A device alarm applies to all arms. Hence, when D is activated, the
alarm action of D - Display, applies to all the loading arms.
3. Then PS1 is activated, which brings L1 to Display severity. The
difference is not seen, because the arm already was at the Display
severity.
4. If the Device alarm D is deactivated, then it is removed from all the
loading arms. But, since there is still one active alarm Display
severity on the product stream 1, it affects the loading arm L1.
Hence, L1 will have Display severity.
5. Now if PS3 is activated, it does not affect any loading arm as stream
P3 is not associated to any loading arm. However, this alarm
appears in the alarm screens and in the alarm log.
6. If the alarm action for PS1 is changed from Display to Shutdown &
Display, there is no effect at this point. This is because, the alarm
action used in the MSC-L is only sampled at the time the alarm is
activated.
7. If PS1 is deactivated, it removes the last activated Display alarm for
L1 and hence L1 changes to Alarm severity None.
8. If PS1 is activated, then it uses the configured Shutdown & Display
alarm action, and brings the alarm severity of L1 to Shutdown &
Display.
9. If a stream has an active alarm then it is not allowed to associate the
stream to a loading arm or to dissociate from a loading arm. You
need to try and clear the alarms first or reboot the MSC-L after the
faulty (re) configuration is made.
The loading progress bars at the left side of the screen display an icon
which indicates the state of the loading arms. The state of the loading
1. Initial None None None
2. D is activated Display Display Display
3. PS1 is activated Display Display Display
4. D is deactivated Display None None
5. PS3 is activated Display None None
6. PS1 action changed to
shutdown
Display None None
7. PS1 is deactivated None None None
8. PS1 is activated Shutdown None None
9. PS3 is associated to L3 This is not allowed in the MCL.
Deactivate first or reboot after.
Alarm Change Severity
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