Dismantling And Repairs; Technical Specifications - Festo DRD Manual Del Usuario

Preparations for adjusting the outer end position
1. Remove the protective cap aF from the DRD−/DRE− −O− .
2. Pressurise the DRD−/DRE− −O− briefly at connection 2 (A).
The pistons move into the outer end position.
aA aB aC
Fig. 6
Setting the outer end position
1. Exhaust the DRD−/DRE− −O− .
2. Loosen the lock nut aE from the setting screw aD using a hexagon socket
wrench.
3. Use a hexagon socket wrench to turn the adjusting screw aD in order to modify
the outer end position
in a clockwise direction for reducing the end position setting
in an anti−clockwise direction for extending the end position setting
until the connected semi−rotary valve assumes the desired position.
4. Tighten again the lock nut aE on the adjusting screw.
When doing this, make sure that the adjusting screw does not turn.
After extending the outer end position
5. Pressurise the DRD−/DRE− −O− again briefly at connection 2 (A).
The pistons move into the extended outer end position.
6. Exhaust the DRD−/DRE− −O− and repeat steps 2 to 4.
Concluding the end position setting
1. Replace the protective caps aA and aF again.
2. Pressurise the DRD−/DRE− −O− alternately at connections 2 (A) and 4 (B).
When doing this, check that the connected semi−rotary valve assumes the
desired end positions.
8

Dismantling and repairs

If used as designated in the operating instructions, the device will be free of
maintenance.
9 Care and maintenance
Warning
Danger of injury from uncontrolled movements
· Switch the tubing system pressureless before dismantling.
Please note
When the connection screws are loosened, the DRD/DRE may switch in an un
controlled manner.
· Exhaust the DRD/DRE before starting any dismantling work.
1. If necessary, remove any existing limit switches.
2. Remove the solenoid valve.
3. Loosen the screws on the flange of the semi−rotary valve.
4. Remove the semi−rotary drive (if necessary together with the mounting bridge
and coupling) from the semi−rotary valve.
5. Send the device to Festo for repairs.
10 Accessories
Please select the appropriate accessories from our catalogue
è www.festo.com/catalogue
11
Size
Pneumatic connection
Constructional design
Installation position
aD aE aF
Swivel angle
End position setting range (only
DRD−/DRE− −O− )
Operating pressure
Operating medium
Ambient temperature
CE marking è Conformity declaration
è www.festo.com
ATEX specification
ATEX ambient temperature
Materials
End cap
Housing
Shaft
Piston
External screws
Seals
Fig. 7
Size
Flange hole pattern
(see type designation)
Weight
Max. rated torque at 6 bar operating pressure
DRD
DRE with 12 resetting
springs
Tightening torques
Lock nuts aB, aE
(only DRD−/DRE− −O− )
Connection screws of
the semi−rotary valve
Size
Flange hole pattern
(see type designation)
Weight
Rated torque at 6 bar operating pressure
DRD
DRE with 12 resetting
springs
Tightening torques
Lock nuts aB, aE
(only DRD−/DRE− −O− )
Connection screws of
the semi−rotary valve
Fig. 8
Size
1
2
26
50
77
100
150
225
375
575
880
The response times are average values for a switching operation under idling conditions.
1) The response times apply to semi−rotary drives with 10 return springs at 6 bar
2) The response times for this semi−rotary drive apply to a device with 15 return springs at 6 bar rated
Fig. 9

Technical specifications

1
G1/8
Rack and pinion, double−acting
As desired
[°] 90
[°]
[bar] 2.5
Dried compressed air, lubricated or unlubricated.
[°C]
[°C]
Polyamide
Anodised aluminium
Anodised aluminium
Aluminium
Stainless steel
Nitrile rubber, polyurethane, polyacetal,
polytetrafluorethylene
1
ISO 5211 F03
[kg] 0.6
[Nm] 7.4
[Nm]
[Nm]
[Nm] 2.5
77
ISO 5211 F10
F12
[kg] 18.5
[Nm] 770
[Nm] 526
[Nm] 20
[Nm] 20
Response time [s]
DRD
< 1
< 1
14
1
1
1
1.2
1.2
2.1
3.2
4.0
6.5
operating pressure.
4 8 100 150, 225
G1/4
±4
10 2 10
20 +80
In accordance with EU explosion
protection directive (ATEX)
II 2 GD c X
20 Ta +60
Painted aluminium
Steel, nickel−plated
2 4 8 14
F03 F04 F05 F05
F04 F05
0.8 1.1 2.4 3.6
16.2 37.2 74 143
10.8 34.9 49.4 95
12 12
2.5 2.5 12 12
100 150 225 375
F12 F14 F14 F16
23 31 37 80
1012 1517 2275 3791
692 1011 1517 2527
20
20 35 35 110
1)
DRE
OPEN (against spring CLOSE (with spring
force) force)
< 1 < 1
< 1 < 1
1.2 0.5
1.5 1.0
1.9 1.1
2.2 1.2
3.9 1.5
8.2 4.8
2) 2)
10.2 7.0
13.8 10.0
.
375 880
Painted
aluminium
26 50
F07 F07
F10
6.4 11.2
266 505
178 345
15 15
15 15
575 800
F16 F25
F25 F30
123 156
5758 8814
4494 5877
110 110