Siemens SIPART PS2 series - Page 7

Electropneumatic positioners
SIPART PS2
Technical description
6/7
Siemens FI 01 · 2009
6
SIPART PS2, electropneumatic positioner, function diagram
A
D
A
D
1
BE1
I
W+
I
W-
W
y
0
x
0
+
_
W
x
+U
BE2
A1 A2
6
+5 V
+24 V
2
_
y
+
y
U
U
I
5
4
3
p
Z
p
2
p
1
8
9
p
2
p
1
p
1
_
+
p
2
p
1
A1 A2
7
II
1 Motherboard with microcontroller and input circuit
2 Control panel with LCD and pushbuttons
3 Piezoelectric valve unit, always present
4 Valve unit, present as accessory in double-action positioner
5 Iy module for SIPART PS2 controller
6 Alarm module for 3 alarm outputs and one binay input
Travel
Travel
Exhaust
Exhaust
Inlet air
HART
Micro-
controller
7 SIA module (slot initiator alarm module, fig.) or limit value contact module
8 Spring loaded pneumatic actuator (single-action)
9 Springless pneumatic actuator (double-action)
Note:
Alarm module (6) and SIA module (7) can only be inserted as alternatives.
© Siemens AG 2008