Siemens SIPART PS2 Operating Instructions Manual page 290

Booster
E.1 Operation with boosters
4. With RUN 3, the initialization is stopped for five seconds. During these five seconds, start
the function for setting the booster using the
A cycle is started which continuously determines the overshoots. The values 'oSuP' and
'oSdo' are shown alternately in the display. 'oSuP' and 'oSdo' represent the values of the
overshoot in % of the total stroke.
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
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 102).
See also
Sequence of automatic initialization (Page 108)
290
or button. The positioner again runs through the initialization step RUN 3,
button.
SIPART PS2 with and without HART
Operating Instructions, 05/2017, A5E00074631-AC