Honeywell Fusion4 MSC-L User Manual

Alarm Handling - Alarm Severity
Part No.: 4418309_Rev09 Fusion4 MSC-L
Honeywell Installation & Operation Manual 6 - 3
NOTE: Active stream alarms that are not associated with
any arm have no effect on batches and do not drive
alarm indication and/or alarm shutdown outputs.
6.2.5 Date & Time
The Date and Time associated with an alarm indicates the most recent
date and time at which the alarm is activated. In the alarm log it is the
date and time at which the state of the alarm is changed.
6.3 Alarm Severity
The alarm severity is a concept that applies to loading arms. The alarm
severity of a loading arm is the highest severity of the active alarms that
affects the loading arm. The alarm severity is further explained in the
following example.
6.3.1 Setup
Consider the MSC-L that is set-up as follows:
 Three product streams P1, P2, and P3.
 Three loading arms L1, L2, and L3.
 One Device alarm D
 Two product stream alarms PS1 and PS2.
6.3.2 Configuration
The streams are configured as follows:
 P1 is associated to L1
 P2 is associated to L2
 P3 is not being associated to any arm
The alarms are configured as follows:
 D, a Device alarm with alarm action Display.
 PS1, a Product stream alarm on product stream 1 with alarm action
Display.
 PS3, a Product stream alarm on product stream 3 with alarm action
Pause & Display.
6.3.3 Scenario
For the above set-up and configuration, assume a sequence of alarm
state changes and observe how it affects the severity is for each of the
loading arms. The initial alarm state of each of the alarms is inactive.
Alarm Change Severity
L1 L2 L3

Honeywell Fusion4 MSC-L Specifications

General

Brand	Honeywell
Model	Fusion4 MSC-L
Category	Desktop
Language	English