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Soft-start and exhaust valve VTSA
Double-channel
Always check that each channel
in multi-channel solutions fulfils
the safety function.
Safety function
In conjunction with safe
electrical disconnection and
a pressure switch for diagnosing
the exhausted status,
“Exhausting in PL d Cat 3” can be
achieved for connection 4.
The pneumatic diagram shown is
only a basic example. The soft-
start valve function and further
valve functions can be
configured in the valve terminal
VTSA. The pressure switch must
be screwed on separately. The
calculations of the PL must be
adjusted for this. The soft-start
valve alone is not a complete
safety solution.
Protection against accidental
activation of the manual override
must be guaranteed in all
modes.
Diagnostics
Diagnostics for both channels
must be carried out via software.
Part no.
Type
557377 VABF-S6-1-P5A4-G12-4-1-P
560726 VSVA-B-M52-MH-A1-1C1-APP
Safety function
Exhausting
Protection against unexpected start-up
Input
Logic
Output
Pneumatic
Electrical
See the technical data of the individual products for detailed information.
Please observe the legal information on page 73.
Safety
exhausting
function refers
to connection
4 of the
VSVA valve!
Cat.
3
PL
d
DC
Switching position
sensing
CCF
>65%
Channels
2
Safety component
No
Per MD 2006/42/EC
All specified values are
maximum values, which
can be achieved via
correct operation
of the component.
System
protection
for a restart