Festo DAPS..R..-F..-MW.. - Manual

Semi-rotary drive
DAPS..R..-F..-MW..
Festo AG & Co. KG
Postfach
D-73726 Esslingen
+49 711 347-0
www.festo.com
(en) Operating instructions 8024409
1302NH
[8024411]
Original: de
Semi-rotary drive DAPS..R..-F..-MW.. English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Control sections and connections
Example of connections on the double-acting semi-rotary drive DAPS:
1 2 3 4 5 6 7
8 9 aJ aA aB aC aD
1 Transmission shaft (shaft groove
shows the process valve position –
open here)
2 Compressed air supply port 2 (A)
3 Four mounting threads – e.g. for
mounting the limit switch or
sensor box
4 Compressed air supply port 4 (B)
5 Handwheel
6 Shield tube with inspection win-
dow
7 View from below – flange to
ISO 5211
8 Mounting thread
9 Star-shaped coupling for seating
of the square of a process valve
aJ Leakage groove
aA Locking spring
aB Mounting thread for threaded pin
for aligning the NAMUR valve
aC Mounting thread for pneumatic
NAMUR switching valve
aD Lock nut for retaining the set end
position.
Fig. 1
2 Design
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, 9 ) and, if applicable,
a limit switch or sensor box ( Fig. 1, 1 ).
The flange to the process valve is designed in accordance with ISO 5211. Four
mounting threads on the top are used for mechanical attachment of a limit switch
or sensor box (
Fig. 1, 3 ). The housing side has a hole pattern for valve attach-
ment in accordance with VDI/VDE 3845 (NAMUR).
Depending on the version, the DAPS is designed as a single-acting or double-acting
semi-rotary drive.
The housing of some semi-rotary drives has, on the process valve port side, a leak-
age groove (
Fig. 1, aJ ) through which the leakage of an untight process valve
can escape.
The single-acting design with spring return is equipped with different spring forces
for use with different supply pressures.
The DAPS...-MW product version described here is equipped with a handwheel -
for manual emergency override in a pressureless state.
The product is available in various designs. These operating instructions describe
the following product variants:
Features Type code Description
Series DAPS- Semi-rotary drive
Size or nominal torque in Nm 0053-
…
1920-
Nominal torque 53 Nm
…
Nominal torque 1920 Nm
Swivel angle in degrees 090- 90 °
Closing direction R Closes 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 F05
…
F14 Flange hole pattern F05
…
Flange hole pattern F14
2nd flange hole pattern (without)
07
…
16 No second flange hole pattern
Flange hole pattern F07
…
Flange hole pattern F16
Manual emergency override -MW with handwheel
Design (without)
-T6 Standard design (-20 °C to + 80 °C)
Low temperature (-50 °C to 60 °C)
Fig. 2 Type code (e.g. DAPS-0480-090-R-F1012-MW-T6)
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
swivel 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 records the moment of reaction of the semi-
rotary drive. The torques permitted in accordance with the technical specifications
(
catalogue www.festo.com/catalogue) apply here.
The handwheel can be used to change the position of the drive when the supply
pressure is switched off (manual emergency override).
Neutral position
If the indicator is located centrally, the
handwheel is in a neutral position.
– The piston can be moved freely.
– The drive can be operated pneumatically.
Fig. 5
Indicator in left-hand position (inside)
A) Double-acting drive:
Turning the handwheel anti-clockwise
moves the indicator inwards.
– The process valve opens.
B) Single-acting drive:
Turning the handwheel clockwise moves the
indicator inwards.
– The process valve closes.
Fig. 6