Operating Procedures
30 ARTC-SVX002A-EN
Active Alarms Screen
The active alarms screen lists all active (triggered) and
non-active alarms in tabular form. See below figure.
Information presented in this screen in tabular form
includes:
• Alarm is considered 'Active' (Triggered) if 'Source
Value' = 1, other words it's still active in the PLC.
• If alarm is 'Not Active' (Not Triggered), its 'Source
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, so only 'Active' alarms will remain on
the list.
Select
This column indicates if the alarm is selected or unselected
for acknowledgment or resetting.
ID
This column displays the descriptive title each alarm.
Source Value
This column displays the numeric value of each alarm.
If an alarm has a Source Value = 1, it can only be reset with
the RESET button when the condition triggering the alarm
has been resolved.
If an alarm has a Source Value = 0, it can be acknowledged
or reset, which removes it from the active alarms list.
State
This column displays the alarm state. There are four
possible states for any alarm:
• TRIGGERED (ACTIVE) / NOT ACKNOWLEDGED
• TRIGGERED (ACTIVE) / ACKNOWLEDGED
• NOT TRIGGERED / NOT ACKNOWLEDGED
• NOT TRIGGERED / ACKNOWLEDGED
Both active and non-active alarms can be acknowledged.
When a non-active alarm is acknowledged, it can be reset,
which immediately removes it from the active alarms list.
Isolation Valves:
- Valve LED is green = valve is open
- Valve LED is gray = valve is closed
Compressor 1 is OFF; Compressor 2 is ON Compressor 1 is ON; Compressor 2 is in alarm
Table 3. Module status conditions (continued)
Figure 16. Active alarms for the chiller
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