Pneumatic Connection In The Flameproof Enclosure; Pneumatic Connection Versions - Siemens SIPART PS2 PA 6DR55 Series Operating Instructions Manual

3.4.4.2

Pneumatic connection in the flameproof enclosure

Structure
The pneumatic connections are provided on the right side of the positioner.
Figure 3-10
①
②
③
④
*) for double-acting actuators
3.4.4.3

Pneumatic connection versions

Overview
For the integrated attachment for single-action linear actuators, the following pneumatic
connections are provided at the rear side of the standard controller:
● Actuating pressure Y1
● Exhaust air outlet
These connections are sealed with screws when the device is delivered.
The exhaust air outlet is corrosion-resistant for the blanketing of the pick-up room and the
spring chamber with dry instrument air.
The following overview diagram shows the pneumatic connection versions for different
actuator types, regulating action and safety position after an auxiliary power supply failure.
SIPART PS2 with PROFIBUS communication
Operating Instructions, 09/2007, A5E00127926-07
Pneumatic connection in the flameproof enclosure
Restrictor Y2
*)
Restrictor Y1
Actuating pressure Y2
*)
Supply air P
Z
3.4 Device components
⑤ Actuating pressure Y1
⑥ Exhaust air outlet E
⑦ Enclosure ventilation (2x)
Description
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