Electromagnetic actuated 3/2 way valve
Home position
Switched position
Faulty switching
The working connec-
tion
2 (A) is vented via
connection 3 (R).
Pressure connection 1
(P) is closed..
The solenoids in
the safety valve are
actuated simulta-
neously. Working
connection 2 (A) is
connected to the
pressure connection
1 (P).
The valve systems
monitor themselves
for correct operation
with every switching
procedure (dynamic
monitoring).
The solenoids are
actuated with a
time difference >
0.5 s.
The dynamic
monitoring system
detects the delayed
actuation and pre-
vents pressure build-
up at the working
connection 2 (A).
Y1
Y1
Y1
Y2
Y2
Y2
3.5 Design and function
The safety valve is designed as a dual valve with piston valve. It comprises two mechanical-
ly separated pilot control systems and main valve systems. The pilot control systems are
depending on the ranges electromagnetic or pneumatic actuated respectively.
Incorporating
XSz8 - XSz50; XSz8V - XSz10V
02/22
Our policy is one of continued research and development. We therefore reserve the right to amend,
without notice, the specifi cations given in this document. © 2014 Norgren Ltd
7503578000000006
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