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Design and method of operation 2-10 – Moniteur 50 Series SMART Positioners User Manual

Page 28

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Design and Method of Operation

2-10

Positioner SIPART PS2/SIPART PS2 PA

C79000-G7476-C150–01

down

Outlet air

Inlet air

Y1

Y2

Y2

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

manometer block

1

J +

A

D

J

w–

J

w–

J

w+

E

H–

E

H–

E

H+

w

Basic instrument

9.2 V

40

J

y

module

Alarm module

up

1.5 k

U

2

5

4

3

6

7

8

9

10

HART
module

E

Setpoint

Actual value

Positioning
increments

Piezoelectic
pre–control

4/3 way valve

Positioning
pressure Y1

Positioning
pressure Y2

Y1

138

PZ

8

Option

Fig. 2-9

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