Siemens SIPART PS2 6DR50xx Instrucciones de operaciones descargar pdf (Pagina 98)

Operating

7.3 Optimizing the controller data

SIPART PS2 with and without HART communications

98 Operating Instructions, 09/2007, A5E00074631-07

Note

The "Automatic" and "Manual" modes remain set when switching to the "Diagnostics"

mode. The positioner responds as per the set mode:

• The predefined setpoint is used as a control variable in the automatic mode.

• The last reached position is retained in the manual mode.

See also

Commissioning (Page 107)

Overview parameters A to P (Page 135)

Overview of diagnostics values (Page 179)

Meaning of diagnostics values (Page 181)

7.3 Optimizing the controller data

Note

Initialize the positioner automatically before changing the parameter settings as per your

specific requirements.

The positioner determines the data for control quality automatically during the initialization

process.

The data determined is optimized for a short transient time in case of minor overshoots.

The adjustment can be accelerated or the attenuation can be intensified by optimizing the

data.

The following special cases are ideal examples for a targeted data optimization:

● Small actuators with actuating times < 1 s.

● Operation with boosters.

You must change the setting of the following parameters to optimize the controller data.

Proceed as follows:

1. Select the parameters in the diagnostics menu.

2. Activate the setting function. Press the increment button

or decrement button for at

least 5 seconds.

3. When you change the selected parameter, it is immediately updated. The effects on the

controller results can then be tested.

22 lmpulse length up / 23 lmpulse length down

You can use these parameters to determine the smallest impulse lengths for each actuating

direction. The actuator is then moved with these lengths. The optimum value depends on the

volume of the actuator in particular. Small values lead to small controller increments and

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Siemens SIPART PS2 6DR50xx Instrucciones de operaciones Pagina 98