5. During the automatic initialization, adjust the booster bypass using the adjustment screw on
the booster. For single-acting actuators, there is one adjustment screw; there are two
adjustment screws for double-acting actuators. Observe the description of your booster.
If 'oCAY' is shown on the display, the overshoot is less than 3%.
Adjustment of the booster is sufficient. If you do not achieve the message 'oCAY' (<3%
overshoot), try instead to achieve as small a value as possible. Observe the travel time in
the process.
6. Press the or button. The positioner again runs through the initialization step RUN 3,
starting with determination of the travel times. The following figure schematically shows the
RUN 3 sequence for the booster.
7. 'FINISH' is shown on the display when the initialization has been completed.
If the process value on the display does not remain stable or if a constant manipulated variable
cannot be achieved for a constant setpoint, further optimization of the controller data is
necessary. This is described in section Optimization of controller data (Page 104).
Booster
E.6 Booster commissioning
SIPART PS2 with PROFIBUS PA
346 Operating Instructions, 05/2019, A5E00127926-AC
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