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Information for the specialist - Configuration
4.8.1
Alarm configuration
The alarm configuration menu permits configuration of the priority for all alarms. A complete alarm list with
default settings and actions, can be found in Appendix D Alarm list. It contains all the default alarm texts and
priorities.
Priority
Alarms can be given different priority levels A-alarm, B-alarm and C-alarm or Not active. The A- and B-
alarms are connected to the digital output sum alarm. The digital output can be inverted, so that an
inoperative alarm gives a high output and vice versa. A- and B- alarms must be acknowledged to reset. C-
alarms automatically reset as soon as there is no longer a cause for alarm.
Stop function
Each alarm offers the possibility to choose whether an activated alarm should stop the controller or not
(Extra stop function). The controller can also be set to run at reduced speed during alarms. Automatic restart
will take place when the alarm has been acknowledged.
For some alarm types such as Electric heating overheated and Warning freeze protection it would be
dangerous to not stop the unit on alarm. Therefore, for such alarm types, the program will always reset the
stop function to Active even if the operator should choose Inactive.
Unfortunately it is not possible to remove the display text concerning the stop function for these alarm
types. This is because the available program space demands that all alarms are treated in the same way in the
display.
N N o o t t e e ! ! For alarms that have been set to I I n n a a c c t t i i v v e e , the extra stop function should also be set to I I n n a a c c - -
t t i i v v e e , or unexpected malfunctions may occur.
4.8.2
Sum alarm
There is one sum alarm function with one digital output.
A and B alarms all activate the sum alarm output, if it has been configured.
✓
Class C alarms are removed from the alarm list when the alarm input resets even if the alarm has not
✓
been acknowledged.
Table 4-50 Sum alarm
Inputs and outputs
DO
4.8.3
Alarm limits
[Alarm status►Alarm limits]
The only alarm limit that can be set is the Deviation alarm for supply air temperature.
4.9 Access rights
Access rights
60 (76)
Sum alarm
Optigo
Ardo
manual, Rev. A
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