15
R
e
v
.3
/
01
.0
7
.2
0
1
6
Butterfly valve SV04 DIN / INCH
9
Optional trigger and query systems
9.1 End position feedback
The feedback device is located at the bracket SV04. By the installation of inductive proximity
switches M12x1 and a switch cam, the position "OPEN" and/or "CLOSED" can be queried, re-
spectively.
Figure 18: Butterfly valve type SV04 with pneumatic actua-
tor and end position feedback
9.2 Control and feedback head TOP LED
The control and feedback head TOP LED is an extension module for the pneumatic actuator
PAMS. The valve position detection is done by proximity switches. The integrated pilot valve
controls two single-acting actuators. In case of double-acting actuators, two pilot valves control
the actuator.
The design of control head and pneumatic actuator allows for an internal control air flow without
external hoses. Apart from the electric position feedback, the device status is displayed optically
at the control head itself by a mechanic position indicator.
The control and feedback head can be adapted to any M&S standard element.
A splashwater-
protected housing contains both the proximity switches for position query and the pilot valves
required for triggering.
