DRRD-...-PS1
Festo AG & Co. KG
Postfach
73726 Esslingen
Germany
+49 711 347-0
www.festo.com
Enclosure for operating instructions
8003697
1308NH
[8028343]
Original: de
Intermediate-position module DRRD-...-PS1
English
. . . . . . . . . . . . . . . . . . . . . . . .
Note
• Observe the warnings and notes in the operating instructions for the DRRD
semi-rotary drive.
1
Control sections and connections
1
2
4
5
3
6
7
8
9
1
Shock absorbers or P-absorbers
secured with lock nut (2x)
2
Supply port for semi-rotary drive
(swivel clockwise)
3
Supply port for semi-rotary drive
(swivel anti-clockwise)
4
Compressed air supply port for
intermediate-position module
5
Intermediate-position module
DRRD-...-PS1
6
Venting hole with filter
7
Fastening interface at semi-rotary
drive DRRD (2x)
8
Slot for cylinder switch (2x)
9
Sleeve for reception of the shock
absorber (2x)
Fig. 1
2
Function and application
Note
The semi-rotary drive with intermediate-position module DRRD-...-PS1 can be
destroyed through incorrect use.
• Make sure that the intermediate-position module is throttled.
The intermediate-position module DRRD-...-PS1 is intended to permit positioning
of the flanged shaft in half of the nominal rotation angle of the semi-rotary drive
DRRD. This intermediate position can be travelled through.
3
Transport and storage
• Take into account the weight of the semi-rotary drive with intermediate-position
module.
Depending on the design, the DRRD-...-PS1 weights up to 20 kg.
• Transport the DRRD-...-PS1 by grasping the housing. Transporting it by grabbing
the dampeners
1
is not recommended, since the dampeners of the intermedi-
ate position can move axially (no safe stop).
4
Installation
4.1 Installation, mechanical
• Secure the semi-rotary drive at the intended position and the effective load to
the drive flange (
Operating instructions DRRD).
4.2 Installation, pneumatic
• Connect tubes to the supply ports (
Fig. 2):
– intermediate position
4
– semi-rotary drive
2
(swivel clockwise)
– semi-rotary drive
3
(swivel anti-clockwise).
Note
Sucked-in contamination and fluids disturb the function.
– Keep venting hole
6
clean and dry.
– Do not cover venting hole
6
.
2
3
4
6
Fig. 2
To set the swivel speed at the semi-rotary drive:
• Use one-way flow control valves in all supply ports:
– for DRRD-16/20 as close as possible to the supply ports
– for DRRD-25 … 50 screwed directly into the supply ports.
For vertical installation and eccentric loads:
• Use the controlled throttle check valves HGL or an air reservoir VZS.
In this way you can prevent the effective load from sliding down suddenly if
there is a sudden pressure drop.
4.3 Installation, electric
• Place the cylinder switches in the slots
aJ
to interrogate the intermediate posi-
tion directly at the semi-rotary drive. Slot
8
can be used to interrogate the
intermediate position piston.
aJ
8
Fig. 3
