Festo VTSA-44-MP Series Manual page 110

3. Installation
Valve sub-bases
Pressure zone with vacuum or
low pressure supply via
connection (1)
Pressure zone with excess
1)
pressure supply via port (1)
1)
in accordance with diagrams in Appendix A, Fig. A/1
Tab. 3/3: Valve sub-bases
3-32
The pressure zone must be fitted only with the following valve
sub-bases:
– 5/2-way valve, monostable (ident. code M and O)
– 5/2-way double pilot valve (ident. code J and D)
– 5/3-way valves (ident. code G, E and B)
– Reversible 3/2-way valve (ident. code P, Q and R).
These valves must be operated via port (3) and (5)
in a separate pressure zone with vacuum or low pressure.
Valves with ident. code K, H, and N (2x3/2-way valves) with supply
through port (1) are not suitable for vacuum or low pressure.
The pressure zone can be fitted additionally with the following
valve sub-bases:
– 2x2/2-way valves (ident. code VC and VV), see also
the following note
– 2x3/2-way valves (ident. code K,H and N)
Note
Reversible 2x2/2-way valve with ident. code VV:
– If the VTSA/VTSA-F valve terminal is also equipped with
other valves, operate the reversible 2/2-way valve in a
separate pressure zone with separate exhaust ducts.
Connecting the valve in vacuum operation:
– Supply operating pressure for the pneumatic springs at
port (1).
– Either supply vacuum at port (5) and operating pressure
at port (3) or vice versa.
– The suction line (line supplied with vacuum) shall be
equipped with a filter to prevent any contamination from
entering into the valve.
– In vacuum operation, the suction line and the pressure
line shall be connected via a T-piece for the ejector
pulse.
Festo P.BE-VTSA-44-EN en 1101f