THORLABS MTDEVAL User Manual page 30

MTDEVAL
7. Usually, at this point the PID optimization for the settling behavior is finished. If required, the
PID values and the cycle time can be manually fine tuned in order to optimize the loop
response to changes of the thermal load.
8. As a final step, save the settings to the non-volatile memory:
Notes
· The cycling time is the time base of the internal digital control loop and is calculated
automatically by entering the critical gain and the critical oscillation period.
· If manually changing the cycling time, the firmware calculates the I and the D share anew.
· The optimized PID parameters are valid for a steady state, that depends on the set
temperature as well as on the ambient conditions (ambient temperature, temperature of the
thermally controlled object). Any changes of the operating and/or environmental conditions
may require a re-adjustment of the PID parameters.
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