AEC VacTrac Series Conveying Systems - Manual (Page 35)

Page 34 12-Station Controllers VacTrac™ Conveying Systems
5-6 Understanding Flash Memory Technology
Your VacTrac™ Series 12 station controller uses a new technology
called flash memory. This type of memory writes and reads like
normal memory, but the advantage is that the data is retained
after power is shut down. If you alter any parameter, the controller
saves the new data to flash memory. This procedure takes several
seconds and takes all the processor time. For this reason, the
controller does not write to flash memory while running. Any
changes to load times are saved when you press the
STOP key and
the controller shuts down completely.
Important!
Let the controller save parameter changes to flash memory
completely before you shut down the controller.
It is also possible for a write error to occur during this operation. If
this occurs, the system always saves a backup of the data.
To recover from a write failure:
„ Shut off the controller, wait 15 seconds, then restart the
controller.
The boot sequence detects the write error and attempts to
restore the backup file.
It is also possible, although rare, that the backup and original file
could both become corrupt. If this occurs, then reset the controller
to factory default parameters before proceeding. However, all
parameters you’ve previously stored are lost and you’ll need to set
up the controller from the beginning. You should record what
settings you use in the controller system if this occurs.