
DAPS-...-R(S)-...-F...-...-MW-...
Semi-rotary drive
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
+49 711 347-0
www.festo.com
Instructions| Operating
8102676
2019-03b
[8102678]
8102676
Translation of the original instructions
1 About this document
This document describes the use of the above-mentioned product.
1.1 Further applicable documents
– Certification documents
– Operating conditions EX
All available documents for the product èwww.festo.com/pk.
2 Safety
2.1 Safety instructions
General safety instructions
– Only use the product in original status without unauthorised modifications.
– Only use the product if it is in perfect technical condition.
– Observe labelling on the product.
– Take into consideration the ambient conditions at the location of use.
– Store the product in a cool, dry, UV-protected and corrosion-protected envir-
onment. Ensure that storage times are kept to a minimum.
– Prior to mounting, installation and maintenance work: Switch off compressed
air supply and secure it from being switched back on.
– Exhaust drive prior to assembly, installation and dismounting.
– Do not dismantle the cylinder end cap, fixed conduit and handwheel.
– The transmission shaft must not be actuated manually using an open-ended
spanner.
– Do not actuate the handwheel using a lever tool.
Operating medium
– Only use compressed air in accordance with the specifications
è 14 technical data.
– Use only unlubricated compressed air under normal conditions. Once the
product has been used with lubricated compressed air, it must continue to be
operated with lubricated compressed air only.
– Protect the device from pressure fluctuations.
Return to Festo
Hazardous substances can endanger the health and safety of personnel and
cause damage to the environment. To prevent hazards, the product should only
be returned upon explicit request by Festo.
– Consult your regional Festo contact.
– Complete the declaration of contamination and attach it to the outside of the
packaging.
– Comply with all legal requirements for the handling of hazardous substances
and the transport of dangerous goods.
2.2 Intended use
The semi-rotary drive DAPS-R is intended to actuate process valves that close to
the right, such as ball valves and butterfly valves, with a rotation angle from 0°
(valve closed)…90° (valve open).
NOTICE!
The operating torque of the drive must not be greater than the maximum permissible torque listed in ISO5211 in relation to the size of the mounting flange and of
the coupling.
2.3 Training of skilled personnel
Installation, commissioning, maintenance and disassembly should only be conducted by qualified personnel.
3 Further information
– Accessories èwww.festo.com/catalogue.
– Spare parts èwww.festo.com/spareparts.
4 Service
Contact your regional Festo contact person if you have technical questions
èwww.festo.com.
5 Product overview
5.1 Configuration
5.1.1 Product design
Transmission shaft (shaft groove
1
shows the process valve position –
here open)
Compressed air connection 2 (A)
2
4 mounting threads for mechanical
3
mounting of a limit switch or
sensor box
Retaining spring
4
Handwheel
5
Conduit without inspection win-
6
Mounting thread
7
Coupling for process valve
8
Leakage slot
9
Compressed air connection 4 (B)
10
Mounting thread for threaded pin
11
for alignment of the NAMUR valve
Mounting thread for pneumatic
12
NAMUR switching valve
Lock nut for end-position retention
13
dow
Fig. 1 Product design
A shaft is guided outward on both sides through the housing. The shaft transfers
the reaction torque to a process valve (è Fig.1,8). A limit switch or position
sensor (è Fig.1,1) can additionally be fitted. The flange to the process valve is
designed in accordance with ISO5211. The housing underside has a hole pattern
for valve mounting in accordance with VDI/VDE 3845 (NAMUR).
5.1.2 Product variants
The following table explains selected product characteristics that are necessary to
understand the instruction manual. Description of the complete type code
èwww.festo.com/catalogue.
Feature Value Description
Series DAPS- Semi-rotary drive
Size or rated torque 0053-
Swivel angle 090- 90°
Closing direction R Closes to the right
Spring strength (for mode
of operation S)
1st flange hole pattern F05
Manual override -MW With handwheel
…
1920-
(none) Double-actingMode of operation
S Single-acting
(none) –
1- Spring strength for connection pressure 2.8bar
2- Spring strength for connection pressure 3.5bar
3- Spring strength for connection pressure 4.2bar
4- Spring strength for connection pressure 5.6bar
…
F14
(none) No second flange hole pattern2nd flange hole pattern
07
…
16
(none) Standard version (–20…+80°C)Version
-T6 Low temperature (–50…+60°C)
Rated torque 53Nm
…
Rated torque 1920Nm
Flange hole pattern F05
…
Flange hole pattern F14
Flange hole pattern F07
…
Flange hole pattern F16
Tab. 1

5.2 Function
In the DAPS, the movement of the piston is transformed using a Scotch yoke system into a swivel motion of the transmission shaft. This kinematic system is only
effective within an angle of approx. 90°.
Double-acting semi-rotary drives
Fig. 2 Symbol – double-acting semi-rotary drive
Pressurising and exhausting the cylinder chambers causes the shaft to move back
and forth. The linear motion of the shaft is transformed into a swivel motion.
Single-acting semi-rotary drives
Fig. 3 Symbol – single-acting semi-rotary drive
Return is through spring force.
5.2.1 Manual override
The handwheel can be used to change the position of the drive with the supply
pressure switched off (manual override). The indicator for the position can be
seen by removing the conduit.
Neutral position
– Double-acting drive: turning the handwheel clockwise moves the indicator
outward. The valve closes.
– Single-acting drive: turning the handwheel anti-clockwise moves the indicator
outward. The valve opens.
6 Transport and storage
WARNING!
Danger of crushing. Danger of shearing.
Body parts can be crushed or severed if the product falls.
• Use appropriate load handling equipment.
• When dispatching used products: Comply with all legal requirements for the
handling of hazardous substances and the transport of dangerous goods. For
return to Festo è 2.1 Safety instructions.
• Remove all attachments.
7 Assembly
7.1 Assembly without adapter plate
Fig. 4 Neutral position
– Indicator is visible and end face lines up with the end of the pipe (mid-posi-
tion).
– Piston can move freely.
– Drive can be driven pneumatically.
Indicator inward
Fig. 5 Indicator inward
– Double-acting drive: turning the handwheel anti-clockwise moves the indicat-
or inward. The valve opens.
– Single-acting drive: turning the handwheel clockwise moves the indicator
inward. The valve closes.
Indicator outward
Fig. 6 Indicator outward
Fig. 7 Assembly without adapter bridge
1. Place the semi-rotary drive on the control shaft of the process valve. The
square of the process valve must sit in the coupling of the semi-rotary drive
(è Fig.1,aB) without tilting.
2. Mount the semi-rotary drive on the connecting flange of the process valve
using 4 corrosion-resistant screws and retaining rings (material: CI).
3. Tighten the screws crosswise.
– Tightening torque è Tab. 2.
7.2 Assembly with adapter bridge
Shaft extension
1
Fig. 8 Assembly with adapter bridge
1. Have adapter bridge and shaft extension ready.
2. Mount the adapter bridge (è Fig.8,2) on the semi-rotary drive.
– Align studs of the adapter bridge lengthwise to the drive.
– Insert screws, but do not yet fully tighten.
3. Insert shaft extension (è Fig.8,1). The square of the shaft extension must
sit in the coupling of the semi-rotary drive (è Fig.1,aB) without tilting.
4. Place the semi-rotary drive with adapter bridge and shaft extension on the
control shaft of the process valve. The square of the process valve must sit in
the coupling of the shaft extension without tilting.
5. Mount the adapter bridge on the connecting flange of the process valve using
4 corrosion-resistant screws and retaining rings (material: CI).
Adapter bridge
2