10
Note that the valve can only be fitted to a mounting surface in accordance with ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350) and with the following fastening screws:
Fastening screws
Tightening torque
Clamping length
Quantity
Part no.
Screws acc. to ISO 4762,
M5x45
7 Nm (screws A10.9)
38 mm
4
615548
2.6
FAIL-SAFE FUNCTION
Choose an option for the fail-safe function if you need this for your application.
A fail-safe function is recommended if the piston needs to be held in a secure position that is safe for your
system in the event of power supply failure.
Option FA
Option FB
Designation
Piston position
Symbol
C4WERE 6
E
… K01/…/.
Centre position:
All ports blocked
Piston E
C4WERE 6
Q
… K01/…/.
Centre position:
From ports A and B little leakage
to T
Piston Q
C4WERE 6 .-
FA
.. K01/…/.
(Option FA = from ports P and B
to ports A and T)
20% of total stroke
Equivalent to roughly 20% of Q
NOM
Pistons E, Z and Q
C4WERE 6 .-
FB
.. K01/…/.
(Option FB = from ports P and A
to ports B and T)
20% of total stroke
Equivalent to roughly 20% of Q
NOM
Pistons E, Z and Q
E
N
5.
9
07.
6.
B
A
.
0/
10.
20