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Item number: M511A
Library Programmed in Accordance with IEC 61131-3
With the help of the PDPI SOFTcontroller, dead-beat PDPI control algorithms can be incorporated into compatible programming systems in accordance with IEC 61131-3. Standard controllers cannot be used in many technical control applications. However, in this case it’s possible to create defined controllers for any application through the use of basic modules. In addition to simple control tasks, highly complex controllers can be configured with special filtering tasks.
Additional features above and beyond the basic version:
Filters und Functions for Distorted Controlled Variable
Parameter: Peak filter
Function: Individual erroneous measurements caused by, for example, electrostatic discharge to the sensor, are suppressed.
Parameter: Smoothing filter
Function: In accordance with controlled system dynamics, several measured values are combined for control purposes in order to avoid an unsteady controlled variable.
Parameter: Adaptive measured value correction
Function: Suppression of periodic, constant or slowly changing oscillation.
Limitation: Inactive if the period is longer than ½ delay time
Parameter: Oscillation disabling(oscillation period: 3 to 200 clock cycles)
Function: Suppression of oscillation with a constant period, if the period is longer than ½ Tu.
Parameter: Feed-forward control
Function: Suppression of controlled variable swells and dips in the event of load fluctuations, e.g. caused by operation/standstill of a machine/system
Limitation: Load fluctuation interval much greater than delay time
Parameter: Response in event of sensor failure, sensor error manipulating factor
Function: If operation must be continued with a defective sensor, the controller reads out a plausible manipulated variable in order to maintain the working level.
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