Nome nmas Simple, Руководство пользователя

Страница: 8 / 35

nmas Simple
Warning and Alarm Configurations
Warning and alarm configuration allows user to define how warnings and
alarms are treated in measurement hardware and software. Common to all
''warnings and alarms'' is that they have multiple triggering levels. Basic set up
of levels is two. These two levels can be understood as warning and alarm
level.
Passing ''hardware level warnings and alarms'' always triggers data storage. If
action is related to ''figure'' calculated from ''signal'' all related data is also
automatically stored. With this operation user can always verify the reason for
alarm action.
Nmas can be configured to react on every ''figure'' level passing. This is usually
not desired since it can lead to very high amount of data storage. Usually at
least one direction of level passing should be set to values higher than 10. In
typical condition monitoring situation both passing counter values should have
values higher than 10. Due to this behavior data in trend can be higher than
warning or alarm limit without any triggered warning or alarm actions.
Reacting on level passings is controlled with configuration parameters count-
up and countdown. Count-up defines how many times figure value has to be
higher than level before level actions are triggered. Countdown amount defines
how many times figure value has to be lower than set level before level actions
are triggered.
Picture 4: Figure is higher than alarm level in five subsequent measurements and alarm is
triggered with count-up value of five.
Page 8