Lumel RE82 User Manual
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Contents
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368.2.1. Auto-tuningThe controller has the function to select PID settings.These settings ensure in most of case an optimal control.To begin the auto-tuning, one must transit to the tune(acc. to the fig. 13) and hold down the push-button during at least2 seconds. If the control algorithm is set on on-off or the auto-tuningfunction is locked, then the tune message will be hidden.For the correct execution of the auto-tuning function, the setting of sTloand sTHi parameters is required. One must set the sTlo parameteron the value corresponding to the measured value at the switched offcontrol. For object temperature control, one can set 0ºC.One must set the sTHiparameter on the value corresponding to the ma-ximum measured value when the control is switched on the full power.The flickering ST symbol informs about the activityof the auto-tuning function. The duration of auto-tuning dependson dynamic object properties and can last maximally 10 hours.In the middle of the auto-tuning or directly after it, over-regulations canoccur, and for this reason, one must set a smaller set point, if it possible.The auto-tuning is composed of following stages: |
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