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Design and method of operation 2-11 – Moniteur 50 Series SMART Positioners User Manual

Page 29

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Design and Method of Operation

2-11

Positioner SIPART PS2/SIPART PS2 PA
C79000-G7476-C150–01

down

Y1

Y1

138

Y2

Y2

238

PZ

8

3V

24V

3V

24V

"

dy

#

A

D

A

D

3V

J

U

BE1

BE1

BE1

#

#

3V

BE2

3V

y

x=y

A2

A1

62

61

52

51

42

41

32

31

12

11

21 22

w

up

U

3

7

9

10

E

Bus interface

Bus coupling

Option

Outlet air

Inlet air

manometer block

Basic instrument

J

y

module

Alarm module

Setpoint

Actual value

Positioning
increments

Piezoelectic
pre–control

4/3 way valve

Positioning
pressure Y1

Positioning
pressure Y2

Fig. 2-10

Block diagram for double-acting actuators (2-wire operation, state as supplied), devices with
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