Page 32 · 5300 Series
TECSource
User’s Manual
Once the AutoTune process is complete, the output will remain on and the
display will show “AutoTune Successful”. The three PID parameters will also be
displayed. Due to display limitations, only the first 2 places of resolution is
displayed, but additional resolution is available by viewing the PID parameters in
the menu. The
Gain
setting will be changed to
PID
.
If the AutoTune process fails, the instrument will display an E-436 AutoTune
Failed error message and turn the output off. Any of the following can cause the
AutoTune to fail:
Noisy temperature measurements, which make it difficult to accurately
measure oscillations
Any condition that causes the output to turn off (temperature limits,
sensor limits, etc.)
Systems with very low P or I terms
In the Auto-Tune fails due to thermal system limitations, you will need to
manually modify the PID parameters as described in the section above or select
factory gain setting.
You can turn the output off at any time to cancel the AutoTune process, and the
PID parameters will remain unchanged (an E-436 will also be displayed).
Using the AutoTune Function Remotely
The AutoTune function can be done remotely, and works essentially the same as
local operation. The TEC:AUTOTUNE command starts the process, and requires
one parameter, which is the AutoTune temperature test point.
The command will immediately put the instrument into AutoTune mode, and the
display will indicate progress in the same way as local operation. The
TEC:AUTOTUNE? query can be used to monitor the process of AutoTune. A
response of 1 indicates AutoTune is in progress. Once complete, the instrument
will respond with a 2 if AutoTune failed or a 3 if AutoTune succeeded. A
response of 0 is returned if the instrument has never started an AutoTune
process.
Turning the output off remotely will cancel the AutoTune process and generate
an E-436 error.
More details on the use of the command can be found in the
Computer
Interfacing Manual
.
Summary of Contents for TECSource 5305
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