EVCO | 21.10.2020 | AZ
| 34
144EJBSI104
EVLJBOX HP Sequencer -
Application manual
Diagnostics
The application is able to manage a set of alarms relating to the configuration and communication:
–
of the slaves
–
of the evaporator temperature
–
of the condenser temperature
–
and other machine functions
For the RTC alarm, it is possible to configure the type of manual or automatic re-arm through parameter
PA11
.
When the EPJgraph alarm LED flashes, it means there is at least one master alarm.
The programme only displays the slave alarms. To view the active alarms, select the slave in question.
The alarms can be viewed by accessing the “alarm menu”
or pressing the “ON/STAND-BY”
key on the desired device.
Press the “ON/STAND-BY”
key or wait for the 60 second timeout to view the main page.
Press the “ENTER”
key to view the active alarms which are displayed in order of priority.
Manual and automatic alarms
There are two types of alarm:
–
Manual re-arm
–
Automatic re-arm
These alarms allow the user to set the most suitable type of re-arm for his needs through a parameter.
Manual alarms
If a manual re-arm alarm is present:
–
The alarm LED will start flashing.
Press the “ENTER”
key on the “alarm menu”
to view the code of the first active alarm.
Once the situation that triggered the alarm has been resolved, the alarm can be re-armed manually as follows:
–
go to the page of the alarm to be reset
–
hold down the “ENTER”
key for about 2 seconds.
If there are no other active alarms:
–
The page with the words “NO ALARMS” will be displayed
–
The alarm LED will switch off
–
The machine will resume normal operation or the page referring to the next alarm will be displayed.
The consequences of an active manual alarm will remain valid until the alarm message is cancelled.
The only manual alarms in the programme are:
–
Slave configuration alarm
AL01
–
Alarm
RTC AL11,
enabled and set, and with manual re-arm (
PA11 = 1
)
–
Alarm evaporator output temperature probe
–
Alarm condenser output temperature probe
Automatic alarms
When an automatic re-arm alarm is present:
–
The alarm LED will start flashing
Press the “ENTER”
key on the “alarm menu”
to view the code of the first active alarm.
Once the situation that triggered the alarm has been resolved, re-arm and cancellation of the alarm message will happen
automatically without the user having to take any action.
The consequences of an active automatic alarm will remain valid until the cause of the alarm has been resolved.
