Festo DAPS..R..-F..-MW.. Manual de usuario descargar pdf (Pagina 3)

To mount the semi-rotary drive with an adapter

bridge, you need:

Fig. 10

– an adapter bridge ( Fig. 10, 1 ),

– a shaft extension ( Fig. 10, 2 ).

1. Align the adapter bridge so that its supports are

oriented in the direction of the longitudinal axis of

the semi-rotary drive and, if necessary, the open

side of the adapter bridge towards the process

valve.

2. Fasten the adapter bridge to the semi-rota ry drive.

Do not yet tighten the screws.

3. Guide the shaft extension through the adapter

bridge into the star-shaped coupling on the bot-

tom of the semi-rotary drive. Make sure that the

shaft extension sits in t he coupling without being

tilted.

4. Fasten the semi-rotary drive with adapter bridge and shaft extension to the

connection f lange of the process valve. Make sure her e tha t the square of the

processing valve sits in the shaft extension without being tilted.

5. Tighten all th e scre w s in diagonally opposite sequence.

Tightening torque  Fig. 8.

After fitting the semi-rotary drive:

6. Check that the semi-rotary drive turns in the required direction of rotation and

whether the processing valve assumes the required po sition.

7. If the semi-rotary drive does not turn in the required direction of rotation:

Carry out the following modification:

DAPS..R-… (double-acting)

DAPS..RS-… (single-acting)

1. Remove the pneumatic solenoid valve.

2. Turn the solenoid valve 180°.

3. Note the position of the threaded pin fo r

orientation of a NAMUR valve.

4. Fasten the solenoid valve again.

1.Removethescrewsonthedriveside.

2. Turn th e drive 90° while it is still connected

through the shaft extension or directly to the

processing valve.

3. Tighten the mounting screws.

7.2 Pneumatic installation

Connections for the compressed air supply

• DAPS semi-rotary drive, double-acting – standard design

– Air supply at port 2 (A) – see Fig. 1 2

Rotation of the switching shaft in an anti-clockwise direction.

– Air supply at port 4 (B) – see Fig. 1 4

Rotation of the switching shaft in a c lockwise direction.

• DAPS semi-rotary drive, single-acting with spring return – standard design

– Air supply at port 4 (B): rotational movement anti-clockwise.

– Spring return: rotation clockwise.

Note

For DAPS..RS-… (single-acting):

• Fasten a filter element to the exhaust por t 2 (A) to prevent ingress of dirt

particles.

7.3 Installing circuitry

Using the pneumatic switching valves:

• Please note the instructions and explanations in the relevant operating instruc-

tions for the pneumatic valves.

8 Commissioning

Note

• Make sure that the operating conditions  section 12 lie within the permissi-

ble ranges.

The product is ready for operation as soon as it is installed and c onnected.

• Make sure that a process valve attached to the semi-rotary drive c an be

switched without hindrance.

• When the supply pre ssure is switched off, set th e handwheel to the neutral

position ( Fig. 5) so that the drive can be operated pneumatically.

• Slowly pressurize the semi-rotary drive.

8.1 Adjustment of the end positions

Some product variants offer the possibility to adjust one or even both end posi-

tions of the DAPS within narrow limits in order to influence the closing or opening

angle of the mounted process valve. During adjustment of the end positions, ob-

serve the permissible adjustment range of the DAPS used ( section 12, end

position adjustment range).

Note

Product variants without specific ation of an adjustment range have no possibility

for setting end position s, e.g. all product v ariants made of stainless steel

(DAPS-...-CR).

The now following description for end position setting refers to the following sizes

in the designs “Standard” and “Low temperature” (-T6):

– DAPS-…-R-…(double-acting); size 0015 up to 1920 (  section 8.2)

– DAPS-…-RS.. (single-acting); size 0015 up to 0960 ( section 8.3)

Information on adjustment of the end position for other sizes can be found, if ap-

plicable, in th e appendix to the operating instructions supplied with the product

( www.festo.com).

8.2 Adjustment for the DAPS-…-R-… ( double-acting) – size 0015 … 1920

For these product variants, the end position that the drive takes during venting

through port 4 (B) can be adjusted (turn to the right - close process valve).

123 54

1 Lock nut with sealing ring

2 Threaded rod

3 Piston

4 Port 2 (A)

5 Port 4 (B)

Fig. 11

1. S upply compressed air and close the process valve. The pistons move to the

outer end position. This fixes the threaded rod – dependent on the current set-

ting. Loosening of the lock nut will then not accidentally change the current

setting.

2. Screw down the lock nut with sealing ring. If the threaded rod has loosened,

retighten it by hand until a light resistance is felt.

3. S upply compressed air and open the proc ess valve. The pistons move to the

inner end position.

4. Adjust the end position:

Observe that a complete turn of the threaded rod c an change the swivel angle

approx. 1.5° to 3.5° – dependent on the product design.

– Turning the threaded rod clockwise reduces the swivel angle.

– Turning the threaded rod anti-clockwise increases the swivel angle.

5. S upply compressed air and close the process valve. The pistons run against the

threaded rod into the outer end position.

6. Check the position of the process valve. To change the swivel angle, repeat

step 3 and 4.

7. Retighten the lock nut on the threaded rod – tightening torque 5 Nm.

8. Check the mode of operation of the semi-rotary drive ( section 8.4)

8.3 Adjustment with the DAPS-…-RS.. (s ingle-acting) – size 0015 to 0960

For these product variants, one of the two end positions of the DAPS can be adjus-

ted – either the end position for right turning or the end position for left turning.

End position for right turning – closing process valve

Note

For the single-acting DAPS, the end position setting for right turning (closing

process valve) does not have a mechanical stop, since the spring disc is not

mechanically conn ected to the piston. The threaded rod therefore limits only the

path of the return spring so that the piston comes to rest without spring force.

But the piston movement or turning of the shaft is not mechanically limited and

can be continued through external forces.

1 2 3 4 5

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