5. Start the initialization process. To do this, press the button for at least 5 seconds until the
display shows the following:
The positioner runs through five initialization steps during the automatic initialization
process. Displays for the initialization steps from "RUN 1" to "RUN 5" are shown in the lower
line on the display. The initialization process depends on the actuator used, and takes up to
15 minutes.
6. The following display indicates that the automatic initialization is complete. The total angle
of rotation of the actuator is shown on the upper line on the display:
See also
Sequence of automatic initialization (Page 111)
7.7.3 Manual initialization of part-turn actuators
You can use this function to initialize the positioner without needing to move the actuator to the
lower and upper endstops. The lower and upper endstops of the actuator travel are set
manually. When the control parameters are optimized, the further initialization process runs
automatically.
Conditions
The following conditions must be fulfilled before activating manual initialization:
1. The positioner has been prepared for using on part-turn actuators.
2. The actuator can be moved completely.
3. The displayed potentiometer position is within the permissible range between "P5.0" and
"P95.0".
Note
Setting of the adjustment angle
The usual adjustment angle for part-turn actuators is 90°. Accordingly set the transmission
ratio selector in the positioner to 90°.
Commissioning
7.7 Commissioning part-turn actuators
SIPART PS2 with PROFIBUS PA
Operating Instructions, 05/2019, A5E00127926-AC 127
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