Pneumatic Connection - Siemens SIPART PS2 Compact Operating Instructions

Basic device, Ex n (PA)
Figure 17 Connection of the standard controller version with the "n" type of protection

Pneumatic connection

Introduction
WARNING
Owing to safety reasons, the pneumatic auxiliary power supply must be fed after installation only if the positioner is
switched to the "P-manual mode" when an electrical signal is available, refer to the as-delivered condition.
NOTICE
Observe the specifications regarding the air quality, see section "Technical data (Page 38)".
● If required, connect the pressure gauge block for supply air and actuating pressure.
● Connection via female thread G¼ or ¼" NPT:
– Y1: actuating pressure 1 for single and double-acting actuators
– Y2: actuating pressure 2 for double-acting actuators
– Exhaust air outlet with a sound absorber at the bottom of the device. Remove the sound absorber if required.
– P : Supply air 1.4 to 7 bar
Z
● For double-acting actuators, connect actuating pressures Y1 or Y2 depending on the desired safety position. Safety
position in case of electrical auxiliary power supply failure:
– Y1: Single-acting, depressurized
– Y1: Double-acting, maximum actuating pressure
– Y2: double-acting, depressurized
Note
After installing the pneumatic connections, check the tightness of the entire control valve. Besides continuous air
consumption, the positioner may try to compensate the position deviation due to leakage. This will lead to premature
wear in the entire control unit.
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SIPART PS2 (6DR5...)
A5E03436620-01, 03/2011