Pneumatic Connection - Siemens SIPART PS2 6DR5020 Series Manual

Preparing for Operation
3.5

Pneumatic Connection

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56
WARNING
For reasons of safety, the pneumatic power may only be supplied after
assembly when the positioner is switched to operating level P manual
operation with electrical signal applied (as--delivered state, see figure
4-4, page 76).
NOTE
Note the air quality! Oil--free industrial air, solid content < 30 μm, pressure
dew point 20 K below the lowest ambient temperature.
- Connect a manometer block for supply air and actuating pressure if
necessary.
- Connection by female thread G 1/4 DIN 45141 or 1/4" NPT:
P Supply air 1.4 to 7 bar
Z
Y1 actuating pressure 1 for single-- and double--acting
actuators
Y2 actuating pressure 2 for double--acting actuators
E exhaust air outlet (remove silencer if necessary)
see figure 2-3 and 2-4, page 18.
- Safety position when the electric power supply fails:
single action: Y1
double action: Y1
Y2
- Connect actuating pressure Y1 or Y2 (only in double--acting
actuators) according to the desired safety position.
- Connect supply air to P
NOTE
In order for spring--loaded pneumatic actuators to be able to reliably
exploit the maximum possible actuating path, the supply pressure must
be sufficiently greater than the maximum required final pressure of the
actuator.
deaerated
Max. Actuating pressure
(supply air pressure)
deaerated
.
Z
SIPART PS2 Manual
A5E00074631-01