Manual Corrigo E Ventilation, revision M
Chapter 5
Functional description
47
5.9 Alarms
Alarm handling
Alarms are indicated by the red alarm LED on the front or on E-DSP.
All alarms can be monitored, acknowledged and blocked using the display and buttons.
Alarm priorities
Alarms can be given different priority levels, A-alarm, B-alarm, C-alarm or not active. Digital
outputs can be bound to act as alarm outputs for A-alarms or B-alarms or both A- and B alarms. C-
alarms are internal alarms which are not forwarded. 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
For each alarm there is the possibility of choosing whether activated alarm should stop control or
not. Automatic restart will take place after removal of the alarm cause and the alarm has been
acknowledged.
For some alarm types such as electric heating high temperature limit and water heating frost
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 since the available program space demands that all alarms are treated in the same
way in the display.
Note: For alarms that have been set to Inactive, the extra stop function should also be set to Inactive,
or unexpected malfunctions may occur.
Alarm text
The alarm text that should be shown in the display when there is an alarm can be changed using E
tool. For more information, see the E tool manual.
Inputs and outputs
DO
Sum alarm A + B
DO
Sum alarm A
DO
Sum alarm B
Содержание Corrigo E series
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