Festo VTSA Series, Руководство пользователя

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3. Installation
3−22
Festo P.BE−VTSA−44−EN en 0601a
3.3.8 Vacuum/low pressure operation
Please note
Valves with identifier T32 C −A, T32 H −A, T32 U −A (2x3/2−way
valves) are not suitable for vacuum or low pressure oper
ation if they are supplied via connection 1.
·
Operate these valves in a separate pressure zone.
·
The operating pressure for this pressure zone must be
set in accordance with the diagram in appendix A,
Fig.A/1.
The following conditions must be fulfilled in order that you
can operate your VTSA valve terminal at supply connection 1
with vacuum or low pressure between 0.9 ... 2 bar:
the pilot control of the valve solenoid coils is operated
with regulated external pilot air.
the valve terminal is fitted with the following valves:
single−solenoid 5/2−way valves
(identifier M52
A , M52− M )
5/2−way double−solenoid valves (identifier B 52, D 52)
5/3−way mid−position valves
(identifier P53
C −M, P53 E −M, P53 U −M)
reversible 2x3/2−way valves (identifier T32 F −A,
T32 N −A, T32 W −A). These valves must be operated via
connections 3 and 5 in a separate pressure zone with
vacuum or low pressure.
3.3.9 Connecting the pneumatic tubing
Please note
·
Use blanking plugs to seal all connections not required
for the functioning of the valve terminal.