dl-breadcrumbs__homedl-breadcrumb-item__separatorConfiguration and programmingdl-breadcrumb-item__separatorLibraries and solutionsdl-breadcrumb-item__separator...dl-breadcrumb-item__separatorTemperature Control librarydl-breadcrumb-item__separatorControl principledl-breadcrumb-item__separatorState machine
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The Temperature Control package in AC500 V3 library uses a state machine to accomplish all work , including:

  • Automatic PID control (state PID_Process): Normal operation

  • Auto tuning procedure (state AutoTune): Can be used during the commissioning phase to calculate the optimized parameters for PID controller.

  • Manual Control (state Manual): Open loop control with directly change of duty cycle.

  • Alarm handling

The figure below explains the statemachine of temperature control for one temperature zone.

Fig. 405: Control Principle of State machine
Control_principle_state_machine