Arroyo Instruments ComboSource 6300 Series, Руководство пользователя

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Page 44 · 6300 Series ComboSource User’s Manual
The instrument displays the AutoTune test point. Use the knob to adjust the test
point to your typical operating point. If you will be operating at two or more set
points, you will usually want to select the set point furthest away from ambient.
Once the temperature test point is selected, press ENTER.
The instrument asks for a final confirmation to start the AutoTune process. Press
ENTER to start, or MENU to exit.
Once the AutoTune process starts, the display will indicate the present
temperature, which step it is performing, and the word “AutoTune” will flash on
the display.
The typical temperature profile of an AutoTune process is shown in the graph
below. The first step, which is the calculation of the P and D parameters,
completes at around 68 seconds, then the mount is allowed to stabilize with the
new P and D parameters,. Then the second step begins, which is the
determination of the I term. This completes around 200 seconds into the test,
and then the output stabilizes with the calculated set of PID parameters for the
remaining portion of the graph.
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. The
Gain setting will be changed to PID .