Festo DAPS..R..-F Series User manual

Semi-rotary drive
DAPS..R..-F..
Festo AG & Co. KG
Postfach
D-73726 Esslingen
[phone]
www.festo.com
(en) Operating instructions 8023613
1211f
[8023611]
Original: de
Semi-rotary drive DAPS..R..-F.. English...................................
1 Control sections and connections
9
12 3 4 5 6
78
aJaA
1Transmission shaft (shaft groove
shows the process valve position –
here closed)
2Compressed air supply port 2 (A)
3Four mounting threads – such as
for mounting the limit switch or
sensor box
4Compressed air supply port 4 (B)
5Mounting thread for threaded pin
for aligning the NAMUR valve
6View from below – flange to
ISO 5211
7Star-shaped coupling for seating
of the square of a process valve
8Mounting thread
9Some product designs:
leakage groove
aJ Mounting thread for pneumatic
NAMUR switching valve
aA Only for product variants with the
ability to adjust the end position:
lock nut for securing the set end
position.
Fig. 1 Operating elements and connections – example of standard design,
double-acting
2Design
Semi-rotary drives of the DAPS series are compact in design and have simple and
robust mechanics with little wear and tear. The design of the product is dependent
on the product design and may differ from the representation shown in Fig. 1
(Fig. 1).
Through the housing, a shaft is guided outward on both sides. Through this, the
reaction torque is transmitted to a process valve (Fig. 1, 6) and, if applicable,
a limit switch or sensor box (Fig. 1, 1).
The flange to the process valve is normally designed in accordance with ISO 5211
(section 12). Four mounting threads on the top are used for mechanical attach-
ment of a limit switch or sensor box (Fig. 1, 3). The housing side has a hole
pattern for valve attachment in accordance with VDI/VDE 3845 (NAMUR).
The housing of some semi-rotary drives has, on the process valve port side, a leak-
agegroove(Fig. 1, 9) through which the leakage of an untight process valve
can escape.
The product is available in various designs. Depending on the version, the DAPS is
designed as a single-acting or double-acting semi-rotary drive. The single-acting
design with spring return is available with different spring strengths for various
supply pressures.
These operating instructions describe the following product variants:
Features Type codes Description
Series DAPS- Semi-rotary drive
Size or nominal torque in
Nm
0008-
…
8000-
Nominal torque 8 Nm
…
Nominal torque 8000 Nm
Swivel angle in degrees 090- 90°
Closing direction RCloses to right
Mode of operation - (without)
S
Double-acting
Single-acting
Spring strength (with
mode of operation S)
(without)
1-
2-
3-
4-
(Omitted for double-acting)
Spring strength for connection pressure 2.8 bar
Spring strength for connection pressure 3.5 bar
Spring strength for connection pressure 4.2 bar
Spring strength for connection pressure 5.6 bar
1st flange hole pattern F03
…
F25
Flange hole pattern F03
…
Flange hole pattern F25
2nd flange hole pattern (without)
05
…
16
No second flange hole pattern
Flange hole pattern F05
…
Flange hole pattern F16
Design (without)
-T6
-CR
Standard design (-20 °C to + 80 °C)
Low temperature (-50 °C to +60 °C)
Stainless steel (-20 °C to + 80 °C)
Fig. 2 Type code (e.g. DAPS-0120-090-R-F0507-CR)
Select suitable accessories (e.g. adapter kits) from the catalogue
(www.festo.com/catalogue).
3 Function
The piston movement of the DAPS is converted to a rotary movement by means of
yoke kinematics (Scotch yoke). These kinematics are only effective within an angle
of approx. 90°.
For double-acting semi-rotary drives:
Pressurising and venting of the cylinder chambers
cause the piston in the DAPS to move back and forth.
The
linear motion of the piston is transformed into a swiv-
el motion of the transmission shaft.
Fig. 3
For single-acting semi-rotary drives:
Return is through spring force.
Product designs with different spring strengths are
available (Fig. 2). Fig. 4
The screwed-on processing valve absorbs the reaction torque of the semi-rotary
drive. The torques permitted in accordance with the technical data
(catalogue www.festo.com/catalogue) apply here.
4 Application
The DAPS semi-rotary drive is intended to activate right-closing process valves,
such as ball valves and butterfly valves with a rotation angle from 0° (valve closed)
to 90° (valve open).
It is completely tailored to the requirements of the processing industry and is suit-
able for control of media-flow process valves in fluid engineering systems.
5 Transport and storage
Ensure the following storage conditions: short storage times in cool, dry, shaded
and corrosion-resistant locations.
Warning
Danger of crushing! Danger of shearing!
The DAPS weighs up to about 183 kg, depending on the product version.
Body parts can be crushed or cut off if the product falls.
• For product versions weighing more than 12 kg, always use appropriate load-
carrying equipment in order to handle the product safely during transport and
assembly.
6 Requirements for product use
Note
Incorrect handling can result in malfunctions.
• Make sure that all the instructions in this section are always observed. The
product will then function correctly and safely.
• Compare the limit values specified in these operating instructions with your
actual application (e.g. pressures, forces, torques, masses, speeds, temperat-
ures). The product can be operated in compliance with the relevant safety
guidelines only if the load limits are observed.
• Ensure that all applicable regulations for your location are adhered to, e.g. of
the trade association or national institutions.

• Take into consideration the ambient conditions at the location of use. Corrosive
environments reduce the service life of the product.
• Remove the packaging except for the adhesive labels on the compressed air
supply ports (danger of contamination). The material used in the packaging has
been specifically chosen for its recyclability (exception: oil paper = residual
waste).
• Use the product in its original status, without any unauthorised product modific-
ations.
• Protect the device from pressure fluctuations. Use excess-pressure and pres-
sure-regulating valves.
• Make sure the compressed air is properly prepared (Technical data
section 12).
• Before carrying out installation, dismantling and maintenance work, switch off
the compressed air supply and vent the drive. Secure compressed air supply
against accidental restarting.
Danger
In the case of single-acting DAPS, high spring forces (mechanically stored en-
ergy) are at work inside the product.
Parts can be ejected and cause serious personal injuries if the end cap is dis-
mounted.
• Never remove the end cap!
• Return the product to Festo if defective or for service.
Note
• Use only unlubricated compressed air under normal conditions.
The DAPS semi-rotary drive possesses an initial lubrication which suffices for the
complete service life.
Note
Continuous operation at the limits of the specified ambient temperature and
work frequency can reduce the service life of the semi-rotary drive.
• Use lubricated compressed air for continuous operation under extreme con-
ditions. The oil must be chemically inert and must not carbonise.
If lubricated compressed air is used:
The initial lubrication will be washed out. The semi-rotary drive may then only be
operated with lubricated compressed air.
7 Installation
Note
The following instructions on fitting the DAPS semi-rotary drive onto a pro-
cessing valve may only be used if the following requirements are met:
– The semi-rotary drive is installed in the direction of the tubing.
– If a 2-way process valve is used:
The 2-way process valve is closed.
– If a 3-way process valve is used:
The switching status of the 3-way process valve is known.
Note
If a 3-way processing valve is used:
• Align the semi-rotary drive so that the port openings for a NAMUR valve face
thesidewithouttubing.
Note
Outflowing processing medium must not ingress into the semi-rotary drive.
The housing of some semi-rotary drives has a leakage groove on the process
valve port side. If the processing valve leaks, the leakage can flow through the
open groove.
• For housings with leakage grooves, make sure that the groove (Fig. 1, 9)
is not sealed. In this way you can be sure that neither processing medium nor
escaping air from the processing valve can penetrate into the semi-rotary
drive.
The DAPS semi-rotary drive can be mounted with or without an adapter bridge.
If there are high media temperatures in the tubing and in processing valve:
• Use an adapter bridge and also a heat-insulated coupling extension.
7.1 Mechanical installation
• In order to mount the DAPS semi-rotary drive, set the switching shaft of the
process valve so that the desired operating method for opening and closing the
process valve is implemented.
• Note that a processing valve with butterfly valve can only be opened in one dir-
ection and closed in the opposite direction.
• Observe the tightening torque
Thread M5 M6 M8 M10 M12 M14 M16 M20
Tightening torque [Nm] 5…
6
10 …
11
20 …
23
45 ...
50
80 …
85
125 …
135
190 …
200
370 …
390
Fig. 5
To mount the semi-rotary drive without an adapter
bridge:
1. Place the semi-rotary drive on the switching shaft
oftheprocessvalve.Makesureherethatthe
square of the processing valve sits in the
star-shaped coupling of the semi-rotary drive
without being tilted.
Fig. 6
2. Fasten the semi-rotary drive with 4 corrosion-res-
istant screws and retaining rings (material: VA) to
the connection flange of the process valve.
3. Tighten all the screws in diagonally opposite
sequence. Tightening torque Fig. 5.
4. Continued Point 6.
To mount the semi-rotary drive with an adapter
bridge, you need:
Fig. 7
1
2
– an adapter bridge (Fig. 7, 1),
– a shaft extension (Fig. 7 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-rotary drive.
But do not tighten the screws yet.
3. Guide the shaft extension through the adapter
bridge into the star-shaped coupling on the
bottom of the semi-rotary drive. Make sure that
the shaft extension sits in the coupling without
being tilted.
4. Fasten the semi-rotary drive with adapter bridge and shaft extension to the
connection flange of the process valve. Make sure here that the square of the
process valve sits in the shaft extension without being tilted.
5. Tighten all the screws in diagonally opposite sequence.
Tightening torque Fig. 5.
After attachment of the semi-rotary drive:
6. Check in cyclical tests whether the semi-rotary drive turns in the required direc-
tion of rotation and whether the process valve takes the required position.
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 for
orientation of a NAMUR valve.
4. Fasten the solenoid valve again.
1.Removethescrewsonthedriveside.
2. Turn the 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:
– Air supply at port 2 (A) – see Fig. 1, 2
Rotational movement of the switching shaft in an anti-clockwise direction.
– Air supply at port 4 (B) – see Fig. 1, 4
Rotational movement of the switching shaft clockwise.
DAPS semi-rotary drive, single-acting (spring return):
– 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 port 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 connected.
• Make sure that a process valve attached to the semi-rotary drive can be
switched without hindrance.
• Slowly pressurize the semi-rotary drive at first. For slow start-up pressurisation
use soft-start valve type HEL.
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 specification of an adjustment range have no possibility
for setting end positions, e.g. all product variants 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 the 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 45
1Lock nut with sealing ring
2Threaded rod
3Piston
4Port 2 (B)
5Port 4 (A)
Fig. 8
1. Supply compressed air and close the process valve. This fixes the threaded
rods, if necessary – dependent on the current setting. Loosening of the lock nuts
will then not accidentally change the current setting.
2. Screw down the lock nuts with sealing ring on both sides. If the threaded rods
have loosened, retighten them by hand until a light resistance is felt.
3. Supply compressed air and open the process valve. The pistons run into the
inside end position
4. Adjust the end position:
Observe that a complete turn of the threaded rod can change the swivel angle
approx. 1.5° to 3.5° – dependent on the product design.
– Turning threaded rods clockwise reduces the swivel angle.
– Turning threaded rods anti-clockwise increases the swivel angle.
• Turn both threaded rods so they stop the pistons in operation simultaneously.
5. Supply compressed air and close the process valve. The pistons run against the
threaded rods into the outer end position.
6. Check the position of the process valve. To change the swivel angle, repeat
step 3 and 4.
7. If the desired position is found, check whether both threaded rods offer resist-
ance to the pistons in a closed process valve position. If necessary, screw in
loose threaded rods until resistance is felt.
8. Screw the lock nuts back onto the threaded rods – tightening torque 5 Nm.
9. Check the mode of operation of the semi-rotary drive (section 8.4)
8.3 Adjustment with the DAPS-…-RS.. (single-acting) – size 0015 to 0960
For these product variants, one of the two end positions of the DAPS can be
adjusted – 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 connected 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.
12345
1Lock nut with sealing ring
2Threaded rod
3Piston
4Port 2 (B)
5Port 4 (B)
Fig. 9
1. Vent the DAPS and close the process valve. Through spring return, the pistons
run into the inside end position up to the spring disc and are held by the
threaded rods, if necessary. This fixes the threaded rods, if necessary – depend-
ent on the current setting. Loosening of the lock nuts will then not accidentally
change the current setting.
2. Screw down the lock nuts with sealing ring on both sides. If the threaded rods
have loosened, loosen them by hand until a light resistance is felt.
3. Supply compressed air and open the process valve. The pistons move to the
outer end position.
4. Adjust the end position:
Observe that a complete turn of the threaded rod can change the swivel angle
approx. 1.5° to 3.5° – dependent on the product design.
– Turning threaded rods clockwise increases the swivel angle.
– Turning threaded rods anti-clockwise reduces the swivel angle.
• Turn both threaded rods equally far, so that the path of both return springs is
identical.
5. Vent the DAPS and close the process valve. Through spring force, the pistons
are moved into the inside end position until the threaded rods and spring discs
delimit the spring path.
6. Check the position of the process valve. To change the swivel angle, repeat
steps 3 to 6
7. If the desired position is found, check whether both threaded rods offer resist-
ance to the pistons in a closed process valve position. If necessary, screw in
loose threaded rods carefully until resistance is felt.
8. Screw the lock nuts back onto the threaded rods – tightening torque 5 Nm.
9. Check the mode of operation of the semi-rotary drive (section 8.4)

End position for left turning – opening process valve
12345
1Lock nut with sealing ring
2Threaded rod
3Adjustment range of the outer end
position (see technical data)
4Spring disc
5Piston
Fig. 10
1. Supply compressed air and open the process valve. The pistons move to the
outer end position. This fixes the threaded rods, if necessary – dependent on the
current setting. Loosening of the lock nuts will then not accidentally change the
current setting.
2. Screw down the lock nuts with sealing ring on both sides. If the threaded rods
have loosened, retighten them by hand until a light resistance is felt.
3. Vent the DAPS and close the process valve. The pistons move to the inner end
position.
4. Adjust the end position:
Observe that a complete turn of the threaded rod can change the swivel angle
approx. 1.5° to 3.5° – dependent on the product design.
– Turning threaded rods clockwise reduces the swivel angle.
– Turning threaded rods anti-clockwise increases the swivel angle.
• Turn both threaded rods equally far so they stop the pistons in operation
simultaneously.
5. Supply compressed air and open the process valve. The pistons run against the
threaded rods into the outer end position.
6. Check the position of the process valve. To change the swivel angle, repeat
steps 3 to 6
7. If the desired position is found, check whether both threaded rods offer resist-
ance to the pistons in the opened process valve position. If necessary, screw in
loose threaded rods carefully until resistance is felt.
8. Screw the lock nuts back onto the threaded rods – tightening torque 5 Nm.
9. Check the mode of operation of the semi-rotary drive (section 8.4)
8.4 Check the mode of operation of the semi-rotary drive
• Check in cyclical tests, through alternating pressurisation and, if necessary,
venting, whether the semi-rotary drive takes the required positions.
• If necessary, adjust the end positions to the extent the semi-rotary drive offers
this possibility (section 8.1).
9 Maintenance and care
If used as intended in the operating instructions, the device will be maintenance-
free.
10 Disassembly
Warning
Danger of injury due to uncontrolled movements.
• Switch the tubing system pressureless before dismantling.
1. If necessary, remove any existing limit switches.
2. Remove the pneumatic switching valve.
3. Loosen the screws on the flange of the process valve.
4. Remove the semi-rotary drive (if necessary including mounting adapter and
coupling extension) from the process valve.
11 Troubleshooting
• Please contact Festo.
12 Technical data
General technical data DAPS-... DAPS–...–T6 DAPS–...–CR
Operating medium Compressed air to ISO8573-1:2010 [7:4:4]
Note about the
operating medium
Operation with lubricated medium possible (required in further
operation)
Ester oil < 0.1 mg/m³, corresponds to ISO 8573:2010 class [-:-:2]
Ambient temperature [°C] –20 … +80 –50 … +60 –20 … +80
Swivel angle [°] 90
Mounting position Any
Valve connection corresponding to standard
– DAPS-0008-…
–…
– DAPS-0030-...
VDI/VDE 3845
(NAMUR)
VDI/VDE 3845
(NAMUR)
–
– DAPS-0053-…
–…
– DAPS 8000
VDI/VDE 3845
(NAMUR)
Pneumatic connection
– DAPS-0015..RS to
DAPS-0180..RS..
– DAPS-0008..R- to
DAPS-0360..R-..
G1/8
– DAPS-0240..RS to
DAPS-0960..RS..
– DAPS-0480..R- to
DAPS-1920..R-..
G1/4 G1/8
– DAPS-1440..RS to
DAPS-4000..RS..
– DAPS-2880..R- to
DAPS-8000..R-..
G3/8 –
Standard connection
to the process valve
ISO 5211
CE marking (see declaration of
conformity www.festo.com)
in accordance with EU Explosion Protection Directive (ATEX)1)
1) Certification-specific special documentation and the documentation of the sensors must be considered

www.festo.com
Operating conditions
DAPS..RS-…
(single-acting)
DAPS-
0015 … 0960
DAPS-
1440 … 4000
Nominal operating
pressure
[bar] 5.6
Operating pressure
1)
– DAPS..RS1-...
– DAPS..RS2-...
– DAPS..RS3-...
– DAPS..RS4-...
[bar]
2.8 ... 8.4
3.5 ... 8.4
4.2 ... 8.4
5.6 ... 8.4
End-position adjusting range at 0°
– DAPS..RS-... [°] One end position adjustable; -1 … +9 ±5
– DAPS..RS-...-T6 [°] ±5
– DAPS..RS-...-CR [°] –
End-position adjusting range at 90°
– DAPS..RS-... [°] One end position adjustable; 81 … +91 85 … +95
– DAPS..RS-...-T6 [°] 85 … +95
– DAPS..RS-...-CR [°] –
1) Minimum operating pressures vary for single-acting semi-rotary drives dependent on the number of
springs
Operating conditions
DAPS..R-...
(double-acting)
DAPS-
0008
DAPS-
0015 …
1920
DAPS-
2880 …
5760
DAPS-
8000
Nominal operating
pressure
[bar] 5.6
Operating pressure
1)
– DAPS..R-... [bar] 1 ... 8.4 1 ... 7
– DAPS..R-...-T6 [bar] 3.5 ... 8.4 –
– DAPS..R-...-CR [bar] 2.5 ... 8.4 –
End-position adjusting range at 0°
– DAPS..R-... [°] –-1 … +9 ±5
– DAPS..R-...-T6 [°] –-1 … +9 ±5 –
– DAPS..R-...-CR [°] –
End-position adjusting range at 90°
– DAPS..R-... [°] ––85 … +95
– DAPS..R-...-T6 [°] ––85 … +95 –
– DAPS..R-...-CR [°] –
1) Exceptions for devices with special marking

Switching time [s] per
cycle
1)
DAPS..RS-…
(single-acting)
DAPS..R-...
(double-acting)
DAPS-0008-... –0.08
DAPS-0015-…
DAPS-0015-...-CR
0.2
0.24
0.08
0.08
DAPS-0030-…
DAPS-0030-...-CR
0.5
0.50
0.13
0.13
DAPS-0053-... 0.9 –
DAPS-0060-…
DAPS-0060-...-CR
–
1.02
0.2
0.21
DAPS-0090-... 1.3 –
DAPS-0106-... –0.4
DAPS-0120-…
DAPS-0120-...-CR
1.7
1.71
–
0.47
DAPS-0180-... 2.7 0.6
DAPS-0240-…
DAPS-0240-...-CR
3.7
3.2
0.8
0.81
DAPS-0360-... 3.9 1.2
DAPS-0480-…
DAPS-0480-...-CR
3.1 1.6
1.54
DAPS-0720-... 5.8 2.7
DAPS-0960-... 6.3 3.1
DAPS-1440-... 19.0 5.5
DAPS-1920-... 15.0 6.0
DAPS-2880-... 19.0 16.0
DAPS-3840-... –12.0
DAPS-4000-... 25.0 –
DAPS-5760-... –16.0
DAPS-8000-... –22.0
1) Average values under idle conditions
Product weight [kg] DAPS..RS-…
1)
(single-acting)
DAPS..R-…
(double-acting)
DAPS-0008-... –0.3
DAPS-0015-...
DAPS-0015-...-CR
1…1.2
1.7
0.75
0.9
DAPS-0030-...
DAPS-0030-...-CR
1.65 … 1.95
2.4
1
1.3
DAPS-0053-… 2.6 … 3 –
DAPS-0060-...
DAPS-0060-...-CR
–
4.5
1.6
1.8
DAPS-0090-... 5…5.9 –
DAPS-0106-... –2.5
DAPS-0120-...
DAPS-0120-...-CR
5.8 … 6.8
7.6
–
3.3
DAPS-0180-... 7.4 … 8.9 4.6
DAPS-0240-...
DAPS-0240-...-CR
10.2 … 11.8
12.9
5.4
5.6
DAPS-0360-... 14.5 … 16.5 6.5
DAPS-0480-...
DAPS-0480-...-CR
19.3 … 22.7
–
9.6
9.5
DAPS-0720-... 26.2 … 33 12
DAPS-0960-... 36 … 42 17.4
DAPS-1440-... 74 23.4
DAPS-1920-... 67 32
DAPS-2880-... 117 56
DAPS-3840-... –49
DAPS-4000-... 183 –
DAPS-5760-... –86
DAPS-8000-... –106
1) Product weight is dependent on the spring strength (www.festo.com/catalogue).
Information on materi-
als
DAPS-... DAPS–...–T6 DAPS–...–CR
Seals Nitrile rubber
Polyurethane (PUR)
Fluoro elastomer
FVMQ
PTFE-reinforced
Nitrile rubber
Polyurethane (PUR)
Fluoro elastomer
Shaft High-alloy steel (1.4305) High-alloy stainless
steel (1.4301)
Cover Wrought aluminium alloy High-alloy stainless
steel (1.4408)
Housing
Screws High-alloy steel High-alloy stainless
steel