Service manual
B - 19
Vission 20/20 • Operation and Service Manual •Vilter/Emerson • 35391SC 2.0
Appendix B • Vission 20/20 Application Procedures
Database Backup Procedure
Upgrading the program in the 20/20 panel normally in-
volves replacing the fl ashcard. Note that all compressor
operation setpoints, calibration values and maintenance
information is held on the fl ashcard. So when upgrading
to a new program (new fl ashcard), the task is simplifi ed
by using the “Database Backup” and “Database Restore”
function provided in the 20/20 to migrate the database
of the original fl ashcard to the new fl ashcard. There are
three main steps to this process:
1. Backup the database of original fl ashcard (cur-
rently in the 20/20 panel) – unto a thumbdrive or
fl ashdrive.
2. Replace original fl ashcard with new fl ashcard.
3. Restore original database to new fl ashcard.
BACKUP DATABASE OF ORIGINAL FLASHCARD
NOTE
It is REQUIRED to re-enter the Alarms and Trip settings
by “hand” when upgrading from some older version
of programs, therefore it is highly recommended
to create a “hardcopy” of all compressor operating
setpoints.
It is also recommended that for documentation
purposes, a “hardcopy” of all compressor
operation setpoints, confi guration information and
maintenance information be made prior to changing
fl ashcards. Please reference the document, titled
“Flashcard Replacement Procedure – Hardcopy” for
a list of the information that you should record.
The data migration procedure (moving the original fl ash-
card database to new fl ashcard) uses a “thumbdrive” or
“fl ashdrive” to transfer data from the original fl ashcard
to the new fl ashcard. Note that there have been a few re-
ports of some thumbdrives not being recognized by the
20/20. If you have diffi culty in getting the 20/20 to rec-
ognize the thumbdrive – then try a different one. Vilter
have successfully tested a number of different manufac-
turers and sizes; a partial list is below;
SanDisk micro cruzer 2.0GB
Imation 2.0GB
Kingston DataTraveler 512MB
SanDisk mini cruzer 128MB
AirBus 32MB
1. With the original fl ashcard installed into the 20/20
SBC, insert the fl ashdrive into the USB port. This
port is located along the right side of the single
board computer below the fl ashcard. (Please ref-
erence the picture in the section titled; Flashcard
Replacement Procedure Hardcopy
2. Logon using the Vilter username and password ( =
physics)
3. Navigate to the Data Backup screen.
4. Under “Available Devices” – you should see some-
thing like “/media/usb0” . If you don’t see any-
thing in this box, press the “Refresh” button, wait
about 5 seconds and then press it again.. If you
still don’t see it, then the 20/20 does not recognize
the fl ashdrive – try a different one. If you do see it,
highlight it.
5. Now highlight the “Filename” box (which will also
contain “/media/usb0”). A keyboard will appear –
now type in the name of the fi le that you want for
your database for this compressor…. For instance…
“vss03_month_day_year” or something similar
to identify the fi le to the compressor – then press
“Enter” key on keyboard.
6. Now press the SAVE button. A “watch” icon will
appear. Shortly thereafter, a popup box should
appear – telling you that the save was successful,
and asking if you want to “unmount” the fl ashdrive
device. Press YES. If the “watch” icon doesn’t go
away after a minute or so, then the 20/20 isn’t able
to close the backup fi le it has written to the thumb-
drive. Power down the 20/20 and try the proce-
dure with a different thumbdrive.
REPLACE ORIGINAL FLASHCARD WITH NEW
FLASHCARD
Now that the database fi le has been saved to the thumb-
drive – the “original” fl ashcard can be replaced with the
new fl ashcard.
1. Power the 20/20 down, remove the thumbdrive
and take out the “original” fl ashcard and install the
new one.
2. Label both the old and new card to identify the
compressor it is for.
RESTORE ORIGINAL DATABSE TO NEW
FLASHCARD
Now that the new card is inserted, power the 20/20 pan-
el back up. As the 20/20 boots up, a message may ap-
pear indicating that an “incompatibility” has been found.
This is NORMAL. The new fl ashcards are built such that
they recognize a couple of different single board com-
puters. Upon bootup – the cards are automatically con-
fi gured properly for the correct single board computer