Siemens SIPART PS2 Series Operating Instructions Manual page 94

Connection
5.4 Restrictors
● In order to set the restrictors, we recommend closing them and then opening slowly.
● In case of double-acting valves, ensure that both restrictors have approximately the same
setting.
Figure 5-15
*) Restrictor Y2
See also
Sequence of automatic initialization (Page 109)
94
①
Restrictor Y1
②
Restrictor Y2, only in the version for double-acting actuators *)
③
Hexagon socket-head screw 2.5 mm
Restrictors
②
is not active for single-acting Fail in Place F01
SIPART PS2 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E00074631-AE