Connecting The Vtsa; Ducted Exhaust Of Control Air And Venting Air - Festo VTSA Series Description

3. Installation
3.3 Connecting the VTSA... valve terminal

3.3.1 Ducted exhaust of control air and venting air

Festo P.BE−VTSA−44−EN en 0905e
Seal working lines (2 or 4) on non−assigned valve locations
(valve locations that are fitted with cover plates) with blank
ing plugs or threaded blanking plugs to protect them from
dirt.
In order to guarantee the optimum efficiency of the valve ter
minal, we recommend in the following cases that more than
one supply or exhaust line be used:
When large volume cylinders are operated at high speeds
When several valves (e.g. 10 valves) are switched simul
taneously to the flow position.
For additional supply of the VTSA... valve terminal, the latter
can be equipped with further pneumatic supply plates (see
5.3.4. Replace manifold sub−base, pneumatic supply plate or
right−hand end plate).
As per standard ISO 15407−2 and 5599−2, ports (12) and (14)
are intended for supplying the valve terminal with external
pilot air.
The Festo valves for the VTSA... valve terminal require a pilot
air supply exclusively via duct (14).
In the case of the reversible 2x3/2−way valves from Festo,
additional operating pressure is also required at duct (12) for
the pneumatic spring. This operating pressure must corres−
pond to the pilot pressure.
All other valves from Festo which are operated so they comply
with the ISO standard work independently of duct (12). The
pilot exhaust air is exhausted unducted directly to each valve
in this operating mode.
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