Specifications

Portable Drying/Conveying Systems Chapter 4: Operation 30 of 76
Because of the size of the screen, only three (3) comments/alarms can be viewed at a time.
To view alarms not visible on the screen, press the DOWN button. To return to a particular
alarm, press the UP button to scroll upward in the alarm history.
Pressing CNV (Convey) in this screen will take the operator to the CONVEY STATUS of
the system.
At this point the operator can return back to the DRYER MENU or MAIN MENU by
touching the appropriate button on the screen.
Auto Tune
This screen allows the operator to automatically tune the process air temperature control
algorithm to a specific drying application. The autotune sequence should be initiated if the
user feels there are unacceptable fluctuations in the process air temperature. The calculated
P, I, and D variables will be shown in the lower left hand portion of the screen for reference
purposes.
The autotune feature can be enabled by pressing the PUSH TO START PROCESS
AUTOTUNE button.
AUTOTUNE IN PROGRESS or PROCESS NOT ACTIVE will inform the operator of
the current status of this feature.
At this point the operator can return back to the DRYER MENU or MAIN MENU by
touching the appropriate button on the screen.
Dew Pt Setup
This screen allows the operator to set the dew point alarm value.
The HIGH LIMIT ALARM VALUE is an audible/visual alarm which will sound when the
process air dew point rises to this value. Values can be set for degrees Fahrenheit between
– 40 through +15 degrees and degrees Celsius between -40 through -10 degrees.
Setting Values
By pressing and holding the numbers in the HIGH DEW PT ALARM, the ALARM
STARTUP DELAY or the ALARM BED SW DELAY buttons, the following screen will
be displayed: