Siemens SIPART Series Operating Instructions Manual page 100

Connection
5.2 Pneumatic
5.2.2 Pneumatic connection
Pneumatic auxiliary power
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.
Note
Specifications regarding air quality
Observe the specifications regarding the air quality, see section "Pneumatic data
(Page 236)".
● 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
– P
● For double-acting actuators, connect actuating pressures Y1 or Y2 depending on the
See also
Pneumatic connection versions (Page 96)
Changing the operating mode (Page 105)
98
WARNING
sound absorber if required.
: Supply air 1.4 to 7 bar
Z
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
Leakage
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.
• After installing the pneumatic connections, check the tightness of the entire control
valve.
SIPART PS2 with and without HART
Operating Instructions, 10/2013, A5E00074631-11