Operating instructions

Description

3.4 Device components

SIPART PS2 with and without HART communications

30 Operating Instructions, 09/2008, A5E00074631-08

3.4.6 Restrictors

Note

The exhaust air valve is always open in the de-energized state.

● Reduce the air output to achieve actuating times of T > 1.5 s for small actuators. Use

restrictors Y1 ① and Y2 ② for this 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.

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Figure 3-14 Restrictors

① Restrictor Y1

② Restrictor Y2, only in the version for double-acting actuators

③ Hexagon socket-head screw 2.5 mm