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Alarm
(
ALARM
). Alarm is a special parameter type with its own dialog editor. Each alarm
parameter is composed of the following sub-parameters:
•
Low threshold – the lower alarm limit of the measured signal. If the value stays below this
limit for predefined time “low alarm” event will be generated;
•
High threshold – the higher alarm limit of the measured signal. If the value stays above this
limit for predefined time “high alarm” event will be generated;
•
Trigger time – waiting time before a “low alarm” or “high alarm” event is generated;
•
Release time – waiting time before an “idle alarm” event is generated;
• Set of notification channels – In case of alarm, maintenance staff will be immediately alerted
via E-mail, SNMP, GPO or SMS (the additional GSM modem should be installed), which
allows technicians to restore the normal service as soon as possible.
The picture above shows the structure of the alarm editor dialog. The bar graph indicates the
signal range of the alarm. The highlighted area represents the permitted signal value range. If
current signal value (pos. 4) is in this range, no alarm event will be generated. Basic elements of
the alarm editor dialog:
1. Lower limit of the alarm range;
2. Low threshold value;
3. Measurement unit;
4. Current value of the signal;
5. High threshold;
6. Higher limit of the alarm range.
ALARM
edit dialog, front panel buttons usage:
Left/Right – Selects previous/next sub-parameter of the alarm.
Up/Down – Change the value of the selected (highlighted) sub-parameter. The value always
stays in the permitted parameter range. Low threshold value cannot exceed the high threshold and
vice-versa;
OK – Accept the value and exits edit dialog;
SB2 – Toggles ON/OFF the low alarm generation;
SB3 – Toggles ON/OFF the high alarm event generation;
SB4 - Discards all changes and cancels edit mode.
Содержание DB7000
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