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Operating Procedures
Active Alarms Screen
Figure 18. Active alarms for the heat pump
The active alarms screen lists all Active (Triggered) alarms
as a table.
•
Alarm is Active (Triggered) if State Value = 1, other
words it's still active in the PLC.
•
Alarm is Not Active (Not Triggered), its State Value = 0
and it can be reset using Reset button.
•
Both Active and Not Active alarms can be
acknowledged. When Not Active alarm is
acknowledged, it can be reset, which will remove it from
the list to show only Active alarms in the list.
Select
This column indicates if the alarm is selected or deselected
for acknowledgment or resetting.
Action
This column gives alarm details if applicable.
Name
This column gives alarm name.
Alarm Status
This column displays the alarm state. There are five
possible states for any alarm:
•
Triggered Not Acked – Alarm triggered (active) but not
acknowledged.
•
Triggered Acked – Alarm triggered (still active) and has
been acknowledged.
•
Not Triggered Not Acked – Alarm no longer appears
(inactive) but not acknowledged.
•
Not Triggered Acked – Alarm no longer appears
(inactive) and acknowledged.
•
Not Triggered – Alarm no longer appears (inactive),
acknowledged and reset (removed from Active Alarms
list).
32
State
Alarm is Active (Triggered) if State Value = 1 (still active in
the PLC).
Alarm is Not Active (Not Triggered), its State Value = 0 (can
be reset using Reset button).
Both Active and Non Active alarms can be acknowledged.
When a Non Active alarm is acknowledged, it can be reset
which will remove it from the list to show only Active alarms
in the list.
Description
This column provides alarm description or for certain
alarms, snapshots of module parameters values.
Time
This column is the date-time stamp indicating exactly when
the alarm occurred.
Check/Uncheck All
This button is used for selecting and deselecting all listed
alarms.
Drop-Down Menu
This is used to either list all the alarms, both active and
non-active, or only active alarms (the default selection).
Reset PLC
This button is – used to reset Active alarms in the PLC, so
they could be further acknowledged/reset on the HMI.
Only alarms which alarm condition is false can be reset in
the PLC otherwise Reset PLC will have no effect on it.
Alarm History
On the active alarms screen, pressing the alarm history
button displays the alarm history screen.
The alarm history screen displays the history of alarms
recorded by the primary microprocessor. See the following
figure.
ARTC-SVX009A-EN
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