Pilot Control (Pilot Air Supply) - Festo VTSA Series Description

3. Installation

3.3.2 Pilot control (pilot air supply)

3−12
In the operating mode for ducted pilot and venting air via
duct (12) (see 5.4.1), there must be no pressure at duct (12),
since otherwise the valves cannot switch.
Therefore, please note the following points if you wish to use
duct (12) for ducted pilot and venting air:
The valve terminal is not equipped with reversible 2x2/2−
or 2x3/2−way valves.
The valve terminal is not equipped with valves from other
manufacturers.
The seals between the manifold sub−bases and the valves
must be mounted in the appropriate position (see
Chapter 5.4.1).
Valve terminals with a selector end plate must be
operated in positions 3 or 4 of the selector plate
(see Tab. 3/2).
Note
The VTSA... valve terminal can either be supplied with
·
internal pilot air via the type VABF−S6−1−P5A4−.. soft−start
valve or with internal or external pilot air via the corres−
ponding right end plate.
The connection seal used for the soft−start valve deter
·
mines whether the internal pilot air is supplied via the
soft−start valve or the right end plate (see assembly in
structions for VABV−S6−1Q−...). If the supply of internal
pilot air via the soft−start valve is selected, there must be
no other pilot air supply feed (duct (14)) within the valve
terminal. Exhaust air cannot be expelled via the soft−
start valve. An exhaust plate is required for operation in
a pressure zone with separated ducts (1) and (3/5).
Festo P.BE−VTSA−44−EN en 0905e