Optimization Of Controller Data - Siemens 6DR50 Series Operating Instructions Manual

6.2.5

Optimization of controller data

Note
Initializing
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 the case of minor overshoots.
The adjustment can be accelerated or the attenuation can be intensified by optimizing the
data.
The following special cases are suitable for targeted data optimization:
● Small actuators with travel times < 1 s.
● Operation with boosters, described in section "Operation with boosters (Page 273)"
Procedure
1. Switch to "Diagnostics" mode.
2. Select the diagnostics parameters.
3. Press the three buttons of the positioner at the same time for at least 2 seconds.
4. Activate the setting function. Press the
The modified diagnostics values are effective immediately. The effects on the controller
results can then be tested.
In order to optimize the controller data, change the values of the diagnostics parameters
listed below.
Diagnostics parameters '23.IMPUP' Impulse length UP / '24.IMPDN' Impulse length DOWN
You can use these diagnostics parameters to determine the smallest impulse lengths for
each actuating direction. The actuator is then moved with these lengths. The optimum value
depends in particular on the volume of the actuator. Small values lead to small controller
increments and frequent activation of the actuator. Large values are advantageous for large
actuator volumes.
Note
Controller increments
• There is no movement if the values are too small.
• Large controller increments also lead to large movements with small actuators.
SIPART PS2 with and without HART
Operating Instructions, 09/2014, A5E00074631-12
or button for at least 5 seconds.
Operating
6.2 Operating modes
111