EVCO c-pro kilo AHU - Manual (Page 80)

C-PRO KILO AHU APPLICATION MANUAL
Pag. 80
7 DIAGNOSTICS
The application is in the process of managing a series of alarms and related fans, pumps,
probes and other operations from the central unit. Based on the various types of alarms it is
possible to configure a rearmament (if manual or automatic), an eventual delay in signal and
of other actions which will follow in a specific case.
When one or more alarms are active the alarm icon flashes.
To see the alarms, choose ALARMI (ALARMS) from the general Menu; alternatively, alarms
can be seen at the Main page by pressing ESC and then choosing “Mostra ALARMI
>>”(Show Alarms>>).
If from one alarm page you press the ESC key, or if you wait for the 60 second timeout
period, you will be brought back to the main application page.
In order to run the various active alarms you need to press the ENTER key further: the alarms
are presented in order of priority as they are presented in the alarm table.
All the digital inputs related to the alarms are managed from the parameter PH51 which
assumes the following significance:
⋅
If set to “NO” the inputs are normally open: logic N.O.
⋅
If set to “NC” the inputs are normally closed: logic N.C.
7.1 Manual and automatic alarms
As previously displayed there are two types of alarms, those which are re-armed manually
and those which are re-armed automatically. Certain alarms are capable of having their type
of rearmament set from the parameter (Riarmo alarmi) “R-arm alarm” more in accordance
with user requirements. Meanwhile other alarms already have their rearmament stabilized by
the application.
7.1.1 Manual alarms
In the case where a manually re-armed alarm is present, the led L0 will begin flashing.
Once the conditions for which the alarm are verified they will be restored allowing for
manual rearmament of the alarm. To perform this operation:
⋅
position on the alarm restore page
⋅
press the ENTER key for approximately 2 seconds.
At this point if there are no other alarms, the following will appear on the indicated page “NO
ALARMI”(NO ALARMS), the led L0 will shut off and the machine will return to normal
operation or you will view the page relating to the next active alarm.
The consequences derived from a manual active alarm remain valid until the user cancels the
alarm message.
7.1.2 Automatic alarms
In the case where a automatically re-armed alarm is present, the led L0 will begin flashing.
Once the conditions for which the alarm are verified the rearmament and the cancellation of
the alarm message are restored; restoration is automatic without user intervention. The
consequences derived from an automatic active alarm remain valid until the causes for which
the alarm went off are restored.