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Siemens Desigo Insight, Operating the management station, V6.0 SP3 CM110588en01_11
Building Technologies Alarm handling 2018-09-05
8 Alarm handling
This section describes how the Desigo Insight alarm system works, and how you
may use it.
8.1 Principles of alarm handling
Your Desigo system controls your building automation and control system plants.
Sometimes events occur (e.g. a fault) that is important for the operator to know and
requiring user intervention. The alarm system processes and issues the
appropriate reports (e.g. to a printer or pager) for such events.
Your Desigo system reacts automatically to a fault (e.g. the ventilation plant is
automatically locked during a fire alarm).
An alarm is issued for a control deviation (i.e. a dirty filter triggers only a simply
alarm).
In both cases the system changes to an alarm state and a corresponding alarm is
issued. The system returns to normal after the cause of the alarm is eliminated and
reset by the user.
The diagram shows a typical Desigo system reacting to an alarm event. Note the
functions performed by the management station, the PXM10 / PXM20 hand-held
terminal and the receiver.
1 Physical event.
2 The alarm object in the automation stations changes state and sends out an
alarm message.
3 The management stations receives the alarm and forwards it to the receiver.
The new state is displayed in the Alarm Viewer.
4 The printer (alarm receiver) prints the alarm.
You must differentiate between these two: An alarm message is what is sent to a
receiver, such as a printer.
An alarm state is the condition an alarm object takes when a measured variable is
outside normal range.
Chapter overview
What the alarm system
does
Hardware elements of
the Desigo system
Alarm
messages and
alarm states