Siemens SIPART PS2 Compact Operating Instructions page 26

Restrictors
● Reduce the air output to achieve actuating times of T > 1.5 s for small actuators. Use restrictors Y1
purpose.
● When turned clockwise, they reduce the air output and finally shut it off.
● 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.
①
Restrictor Y1
②
Restrictor Y2, only in the version for double-acting actuators
③
Hexagon socket-head screw 2.5 mm
Figure 20 Restrictors
Commissioning
Basic safety instructions
WARNING
Improper commissioning in hazardous areas
Device failure or danger of explosion in hazardous areas.
● Do not commission the device until it has been mounted completely and connected in accordance with the information
in Chapter "Technical data (Page 38)".
● Before commissioning take the effect on other devices in the system into account.
WARNING
Loss of explosion protection
Danger of explosion in hazardous areas if the device is open or not properly closed.
● Close the device as described in Chapter "Installing/mounting (Page 9)".
WARNING
Opening device in energized state
Danger of explosion in areas subject to explosion hazard.
● Only open the device in a de-energized state.
● Check prior to commissioning that the cover, cover locks, and cable inlets are assembled in accordance with the
directives.
Exception: Devices having the type of protection "Intrinsic safety Ex i" may also be opened in energized state in hazardous
areas.
26
① ②
and Y2 for this
SIPART PS2 (6DR5...)
A5E03436620-01, 03/2011