Pneumatic actuated 5/2 way valve
Home position
Switched position
Faulty switching
The working connec-
tion 2 (A) is vented via
connection 3 (R).
Connection 4 (B) is
connected to pressure
connection 1 (P).
Pressure is applied
to the safety valve
simultaneously via the Z
connections.
Working connection 2
(A) is connected to the
pressure connection 1
(P).
Connection 4 (B) is
vented via the vent
connection 5 (S).
The valve systems
monitor themselves
for correct operation
with every switching
procedure (dynamic
monitoring).
Pressure is applied to
the Z connections with
a time difference of >
0.5 s.
The dynamic monito-
ring system detects the
delayed actuation and
prevents pressure build-
up at working connecti-
on 2 (A).
Connection 4 (B) is still
connected to the pres-
sure connection 1 (P) to
hold up any load that
has been raised.
Z
1
Z
2
3(R)
1(P)
5(S)
2(A)
4(B)
3(R)
1(P)
5(S)
2(A)
4(B)
Z
1
Z
2
Z
1
Z
2
3(R)
1(P)
5(S)
2(A)
4(B)
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
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