Siemens SIPART PS2 6DR50xx Manual page 25

1
2
BE1
3 V
I
W+
+24 V
+5 V
W
A
D
I
W-
A
D
y
+U
0
_
+
W
x x
0
6
BE2
7
1 Motherboard with microcontroller and input circuit
2 Control panel with LC-display and momentary action switch
3 Piezo-valve unit, always built-in
4 Valve unit with double-acting positioner always built-in
5 Iy-module for positioner SIPART PS2
6 Alarm module for three alarm outputs and one digital input
7 SIA-module (Slot Initiator-Alarm-module)
8 Spring-loaded pneumatic actuator (single-acting)
9 Spring-loaded pneumatic actuator (double-acting)
Figure 2-10 Block diagram of the electro-pneumatic positioner, functional diagram
.
SIPART PS2 Manual
A5E00074631--06
HART
_
y
_ + y
+
Micro-
controller
U
U
I
5
A1 A2
I I
A1 A2
NOTE
Alarm module (6) and SIA module (7) can only be used alternatively.
Design and Functional Principle
3
Supply air
Zuluft
p
Z
Exhaust air
Abluft
p
1
p
1
p
2
p
2
Abluft
Exhaust
air
4
8
p
1
9
p
2
p
1
stroke
stroke
25