7503641000000006
014
Incorporating
SCSQ10
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
Home position
The working connection
2 (A) is vented via connec-
tion 3 (R). Pressure connec-
tion 1 (P) is closed
Schaltstellung
Switched position
The solenoids in the safety
valve are actuated simul-
taneously.
Working connection 2 (A) is
connected to the pressure
connection 1 (P).
The valve systems monitor
themselves for correct op-
eration with every switch-
ing procedure (dynamic
monitoring).
Faulty switching
The solenoids are actuated
with a time difference
> 0.5 s.
The dynamic monitor-
ing system detects the
delayed actuation and
prevents pressure build-up
at the working connection
2 (A).
4 Design and function
4.1 Electropneumatic
actuated
The safety valve with starting function is characterised by
a pressure build-up of the outlet pressure in two phases.
In phase 1, there is initially a slower pressure build-up,
which increases steadily depending on the throttle valve
position and the volume to be filled.
In phase 2, upon reaching a certain pressure, the sequence
valve first opens and then interconnects the full operating
pressure at the valve outlet of the safety valve. The so-
called gating pressure in this valve design depends on the
operating pressure and is determined by the sequence
valve with the piston area ratio of about 2:1
3
2
3
1
1
1
2
3
2
Grundstellung
Kanal „2“ auf -„3“ über
Sicherheits-Schalldämpfer
entlastet.
Arbeitstellung
Beide Magnete angesteuert,
Kanal „1“ auf -„2“ durchge-
schaltet.
Sicherheitsstellung
Bei unsymetrischer Ansteuerung,
defektem Magnet, verschmutztes
Ventil, ect.
(Darstellung ohne Anfahrfunktion)
