Siemens SIPART PS2 6DR50xx Instrucciones de operaciones descargar pdf (Pagina 99)

Operating

7.3 Optimizing the controller data

SIPART PS2 with and without HART communications

Operating Instructions, 09/2007, A5E00074631-07

frequent activation of the actuator. Large values are advantageous for large actuator

volumes.

NOTICE

Controller increments

• There is no movement if the values are too small.

• Large controller increments also lead to large movements in case of small actuators.

26 Slow step zone up / 27 Slow step zone down

The slow step zone is an area of the control deviation. It includes the area between the fast

step zone and the dead zone. The actuator is activated in the dead zone in a pulsed manner.

Even at small control deviations, the small values result in relatively large speeds of shifting.

Too large speeds of shifting result in overshoots.

Large values reduce the overshoot especially in case of large changes in the setpoint. They

lead to slow speeds of shifting near the corrected status.

43 Prediction up / 44 Prediction down

These parameters work similar to attenuation factors. These parameters are used to set the

control dynamics. The parameter settings work as follows:

● Small values result in quick adjustments with overshoots.

● Large values result in slow adjustments without overshoots.

Note

Reference variable

It is advantageous to use a fixed reference variable to optimize the control data.

Therefore, change the dead zone parameter from auto to a fixed value.

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Siemens SIPART PS2 6DR50xx Instrucciones de operaciones Pagina 99