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Configure Alarm Handling
Configure Alarm Handling
About Alarms
When an alarm is generated, the alarm is:
• Indicated on the RTU front panel, and
• Listed in the RTU alarm log.
If the RTU is equipped for communication, the alarm is sent to:
• SCADA system, or
• SMS receivers.
General
Alarm Delay
Alarm generation can be delayed.
Before using this function
To delay a mains error alarm, the RTU has to be connected to a 24 V battery backup that
can supply the RTU during the delay time.
Restriction: Mains power failure
• The pumps are blocked directly at mains power failure. This block is not delayed.
• The maximum delay for a mains error alarm is 960 minutes.
Function: Alarm delay
When the alarm condition is fulfilled longer time than the alarm delay, the alarm is
generated.
Configure alarm delays
1. Specify general delay in the General alarm delay menu (12_1).
2. Specify delays for:
• Mains error alarms in the Pow.fail alarm delay menu (12_2).
• Low level alarms in the Low level alarm delay menu (12_3).
• Blocking alarms in the Blocking alarm delay menu (12_4).
Alarm Priority
The alarm priority determines what happens with the alarm.
Function: Alarm priorities
APP 521 User manual
Priority
Description
A
Alarm is sent to:
SCADA system, or
SMS receivers
B
Same as for priority A.
C
Alarm is only local in the RTU.
D
Alarm is sent to:
SCADA system according to its D-alarm time frame, or
SMS receivers according to the D-alarm time frame in the RTU.
F
Alarm is not recorded.
H
For future use.
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