The temperature control has two primary modes, PID mode and On-Off mode. The control is factory set in PID mode. This
mode is best for applications requiring excellent temperature stability, +/- 1 degree. On-Off mode can be used where faster
run-up and recovery times for batch-style processing are desired and where a greater cyclical deviation from set point is
not critical.
To place the control in On-Off mode, navigate
[level 1]
in the functions menu. Change the
[int.t]
and
[der.t]
function
settings to
[oFF]
and the
[CyC.t]
to
[on.of]
. Return to the temperature display by pressing the up & down keys
together for 3 seconds. The control will now operate in On-Off mode.
The control's PID performance parameters as well as other control variables are factory tuned for your model's
temperature range and capacity to provide heating and performance characteristics for a broad range of applications. For
certain applications, such as extra large or high density loads, it may be necessary to generate new PID parameters to
improve oven performance.
To customize performance for a specific application, activate the auto-tune function. At the "tunE" prompt in the functions
menu, change the function setting from "off" to "on". NOTE: To tune parameters more accurately for set temperatures
below 250 degrees F, change the function setting to "At.SP" (at set point), instead of the "on" setting. Auto-tune will take
between 5 and 45 minutes to complete. When completed it will return to normal operation automatically.
Start the tune function at the point in your application for which you desire better performance. For example; If you want
better run-up performance once a load is placed, start the auto-tune function just after you've place the load. If you want
the best stability after the load achieves temperature, start the auto-tune function after the load achieves temperature, etc.
Displays total
variance (0.9°)
Press & Hold
Then Press Once
Displays High Variation
*
*
*
*
*
*
Temperature Tracking Feature
This feature monitors the stability of the control during any given length process. It will record and display the
following:
The total variation or spread between high and low temperature.
The absolute or maximum high temperature
The absolute or minimum low temperature
EXAMPLE:
Advance Control Operation
AUTO-TUNING performance parameters PID:
PID vs "On - Off" Operation:
Navigate on the controller to "CheK" prompt in menu level 3. (see page 6 for more accesing controller levels)
Once on the “CheK” parameter hold the star key and then the up arrow key to select the
ON
option.
Return to temperature display by pressing and holding both arrow keys simultaneously until temperature is
displayed or simply allow the control to auto-return in 60 seconds.
The control will track the temperature variation until "CheK" is turned to
OFF
. Recorded readings are retained
until next "CheK" ON.
How to start the tracking feature
*
You can view readings at any time during or after tracking feature has been turned off. But de-powering the unit
will reset "CheK" to OFF and "rEAd" to zero.
To view total temperature variation navigate to "rEAd" prompt in menu level 3. (see page 6 for more accesing
controller levels)
*
Press & Hold
Then Press Once
Displays Low Variation
*
The example below shows a typical temperature tracking reading in sequence from left to right .
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