Festo DPA Serie Instrucciones De Utilizacion página 19

DPA
Fitting the proximity sensors for sensing option (DPA− −A only) è Fig. 2
Fasten the proximity sensor1 in one
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of the 6 available sensor grooves on
the right−hand side of the DPA (rotary
knob top, pneumatic ports front). The
proximity sensor must be positioned
in the middle of the cylinder barrel.
Connect the proximity sensors to the
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adding counter.
Note
The proximity sensor records each individual stroke of the drive piston. In order
to arrive at the usual count of double strokes, the number of individual strokes
has to be halved.
Information of the proximity sensor and the adding counter can be found in the
operating instructions for these products.
Pneumatic connection for input pressure, output pressure, exhaust air
Note
Incorrectly dimensioned cable cross−sections can impair the timing behaviour of
downstream switched components.
Use hoses with a minimum inner diameter or the hose types recommended in
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Fig. 3 for the input and output pressure.
Use a silencer for the exhaust air. If the exhaust air is to be ducted, it must be
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vented relative to atmosphere.
The exhaust air from both valve exhaust ports (7 è Fig. 1) must not be
ducted.
Check whether an air reservoir is required. In this way you will avoid pressure
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fluctuations.
Festo DPA 0712d English
Fig. 2
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