ABB COM600 series User Manual page 74

74
COM600 series, version 4.1
User's Manual
To create an alarm group:
1. Create virtual Application OPC server.
2. Create Virtual Subnetwork.
3. Create Virtual IED.
4. Create Virtual LD.
5. Create LN.
6. Create GroupAlarm SPS object
If you are going to create several Group Alarm objects, rename each object with a
unique name within LN.
7. Open Group Alarm Configurator.
Drag and drop the data objects, which shall belong to the alarm group to Group Alarm
Configurator tool. You can use data objects from any of the OPC servers of COM600.
The data objects of following types can be used as a member of alarm group: ACD,
ACT, SPS, SPC, DPS, DPC, ENS, ENC, INS, or INC. When the objects are inserted to
the tool, they have by default the alarming states configured according the event definition
linked to the object. If no event definition is linked to an object, it does not have any of
the states as alarming. Alarming states can be manually specified in the tool by checking
the corresponding check box of the state.
When the objects have been added and the alarm states are configured, accept the con-
figuration by clicking apply.
The logic of the alarm group is configured with the Group Alarm Logic Property of the
object. There are three choices:
•
AND
Alarm group is active if all signals belonging to the alarm group are active. Signal
changes which does not change alarm group state or quality does not cause an update
in the alarm group object.
• Dynamic OR
Group alarm is active if any of the signals belonging to the alarm group is active.
Any signal state change causes an update of the alarm group object even if the state
or quality of the alarm group does not change.
• Static OR
Group alarm is active if any of the signals belonging to the alarm group is active.
Signal changes, which do not change the alarm group state or quality, does not cause
an update in the alarm group object.
The handling of the source signal quality is configured with the Signal Handling property.
There are three choices:
• Group Quality Follows Signal Quality
Group alarm is calculated using only the signals with good/known quality. The
group alarm has the quality of the signal with the worst quality in the group.
• Unknown Signal StatesTreated As Alarming
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