Festo DRRD-12 User manual

en Operating

instructions

8074788

2017-10d

[8074790]

Semi-rotary drive

DRRD-12 ... 63

2 Festo – DRRD-12 ... 63 – 2017-10d

Original instructions

Symbols: Installation and commissioning may only be per

formed in accordance with these instructions by

technicians with appropriate qualifications.

Warning

Caution

Note

Environment

Accessories

English 3.........................................................................

DRRD-12 ... 63

Festo – DRRD-12 ... 63 – 2017-10d English 3

English – Semi-rotary drive DRRD-12 ... 63

Table of contents

1 Control sections and connections 4............................................

2 Function and application 5...................................................

3 Requirements for product use 6...............................................

4 Transport and storage 7.....................................................

5 Installation 7..............................................................

5.1 Mechanical installation 7.....................................................

5.2 Pneumatic installation 9.....................................................

5.3 Electrical installation 9.......................................................

6 Commissioning 10...........................................................

6.1 Commissioning end-position adjustment 10.......................................

6.2 Carrying out commissioning 12.................................................

7 Operation 13...............................................................

8 Maintenance and care 14.....................................................

9 Disassembly and repair 15....................................................

10 Accessories 16..............................................................

11 Trouble-shooting 16.........................................................

12 Technical data 17............................................................

DRRD-12 ... 63

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Documentation on the product

For all available product documentation èwww.festo.com/pk

1 Control sections and connections

182345 6 7

9aJaA

1Supply port (swivel clockwise)

2Supply port (swivel anti-clockwise)

3Flanged shaft

4Shaft opening for guiding through cables/

compressed air tubing with centring hole

5Thread for accessories flange

6Thread for accessories (e.g. for clamping unit

and external shock absorbers)

7Centring hole for accessories

8Shock absorber for swivel angle adjustment,

secured with lock nut (x2)

9Slot for cylinder switch

(2x for DRRD-12); (4x for DRRD-16 ...) 63)

aJ Mounting interface DRRD (2x)

aA Mounting interface for payload (4x)

Fig. 1

DRRD-12 ... 63

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2 Function and application

The DRRD semi-rotary drive is a double-acting twin-piston drive. When the compressed air supply ports

are pressurized reciprocally, two pistons arranged in parallel move in the opposite direction backwards

and forwards. This linear motion is converted through pinions into a swivel motion of the drive shaft.

The end position cushioning is done:

– DRRD-...-P with flexible cushioning

– DRRD-...-Y9/Y10/Y14 with internal hydraulic shock absorbers

– DRRD-...-Y12 with external hydraulic shock absorbers (èassembly instructions).

The DRRD semi-rotary drive is intended for swivelling effective loads which have to execute a defined

angular movement.

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3 Requirements for product use

Note

Malfunction and material damage due to incorrect handling.

 Always comply with the specifications of this chapter.

This is the only way to ensure correct and safe product behaviour.

 Take into consideration the legal regulations applicable for the destination, as well as:

– regulations and standards

– regulations of the testing organizations and insurers

– national specifications.

 Note the warnings and instructions on the product and in the relevant operating instructions.

 Remove all transport packaging, such as transparencies, caps and cartons

(with the exception of any covers in the pneumatic ports).

The packaging is intended for recycling

(exception: oil paper = residual waste).

 Take into account the material specifications (è12 Technical data).

 Use the product in its original status, without any unauthorised product modifications.

 Take into consideration the ambient conditions at the location of use.

Corrosive elements in the environment (e.g. ozone) will reduce the service life of the product.

 Compare the limit values specified in these operating instructions with your actual application

(e.g. pressures, forces, torques, temperatures, masses, speeds).

Operation of the product in compliance with the relevant safety regulations is contingent on adher

ence to the load limits.

 Take the tolerance of the tightening torques into account. Unless otherwise specified, the tolerance

is ± 20 %.

 Do not modify any screws or threaded pins unless this is directly requested in these instructions. For

safety reasons, they are fixed with screw locking agent.

For vertical installation:

 Make sure the drive reaches a stable position when it comes to rest

(e.g. the lowest point or a variant with clamping unit è10 Accessories).

 Make sure the compressed air is properly prepared (è12 Technical data).

 Having selected a medium, stick with it for the entire life of the product

(e.g. always use unlubricated compressed air).

 Pressurize your entire system slowly.

There will then be no uncontrolled movements.

For slow start-up pressurisation, use start-up valve type HEL.

DRRD-12 ... 63

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4 Transport and storage

 Take into account the weight of the DRRD: It weighs up to 20 kg (è12 Technical data).

5 Installation

5.1 Mechanical installation

Note

 Handle the DRRD with care to prevent damage to the drive shaft. This applies in

particular to the following points:

1. Position the DRRD so that you can easily reach the control sections and connections.

2. Secure the DRRD at the mounting interface aJ by using two screws and two centring sleeves each.

The tightening torque is summarised in the following table (èTab. 1).

Direct mounting Through-hole fastening

aJ aJ

Fig. 2

Size 12 16 20 25 32 35 40 50 63

Screw (direct mounting) M5 M5 M5 M6 M8 M8 M10 M10 M12

Tightening torque [Nm] 6 6 6 10 18 18 30 30 55

Screw (through-hole fastening) M4 M4 M4 M5 M6 M6 M8 M8 M10

Tightening torque [Nm] 3 3 3 6 10 10 18 18 30

Centring sleeve ZBH [mm] 9 9 9 12 15 15 15 15 25

Tab. 1

DRRD-12 ... 63

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3. Feed the appropriate lines through the hollow

drive shaft, if necessary, or use the variant

with energy throughfeed.

The shaft opening for wiring has the following

dimensions (èTab. 2).

4. When mounting the moving mass, make sure

that the following specifications are observed:

– installation without tilting

– permissible radial force Fy

– permissible axial force Fx

– permissible mass moment of inertia

– a structure that is as rotationally symmet

rical as possible.

Fig. 3

The mass moment of inertia of the payload should be calculated. Lever arms, cantilevers and

masses should be considered in the calculation (maximum permissible values èCatalogue

specifications, www.festo.com/catalogue).

Note

If there are demanding requirements for concentricity of the components on the flanged

shaft:

 Use the middle centring hole 4as well as one of the 4 existing centring holes.

5. Secure the effective load to the drive flange at

the mounting interface aA by using at least

two screws positioned opposite one another

and centring sleeves.

The tightening torque is summarised in the

following table (èTab. 2).

Fig. 4 4

Size 12 16 20 25 32 35 40 50 63

Shaft opening 4[mm] 5 8 8 10.5 10.5 10.5 21 21 21

Centring sleeve ZBH for middle

centring hole

[mm] 7 12 12 15 15 25 25 25 25

Screw for thread at aA M3 M4 M4 M5 M6 M6 M6 M8 M10

Centring sleeve ZBH [mm] 5 7 7 9 9 9 9 12 15

Tightening torque [Nm] 1.2 3 3 6 10 10 10 20 40

Tab. 2

DRRD-12 ... 63

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5.2 Pneumatic installation

 If necessary, remove the covers in the pneu

matic ports.

To adjust the swivel speed:

 Use the GRLA one-way flow control valves.

These are screwed directly into the com

pressed air supply ports.

Fig. 5

For vertical installation and eccentric loads:

 Use the controlled check valve HGL or a compressed air spacer compensation reservoir VZS.

In this way you can prevent the effective load from sliding down suddenly if there is a sudden pres

sure drop.

5.3 Electrical installation

Note

Multiple switching cycles of cylinder switches are possible, dependent on the design.

 Make sure the cylinder switches are always set to the first switching point.

To do this, push the cylinder switch (A) in from the slot end where the piston to be

sensed is located until the first switching occurs.

 Place the cylinder switches for sensing the end

positions into the slots 9.

Sensing can be conducted with inductive prox

imity sensors with the help of the external

sensing kit (è10 Accessories). 9

Fig. 6

(A)

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10 Festo – DRRD-12 ... 63 – 2017-10d English

6 Commissioning

Warning

Danger of injury from rotating loads.

 Make sure the DRRD is only set into motion with protective devices.

 Make sure that in the swivel angle of the DRRD

– Nobody can reach in

– No foreign objects can enter

(e.g. by means of an individual protective guard).

Note

 Make sure that the following requirements are observed:

– the shock absorbers are secured with lock nuts

– the operating conditions are within the permissible ranges

– the assembly instructions for the DRRD-...-Y12 are observed.

6.1 Commissioning end-position adjustment

1. Rotate both upstream one-way flow control

valves (A):

– at first completely closed

– then open them again approximately one

turn.

2. Pressurize the drive optionally in one of the

following ways:

– slow pressurisation of one side

– simultaneous pressurisation of both sides

with subsequent venting of one side.

(A)

Fig. 7

Note

Risk of damage!

If the shock absorber is unscrewed too far, it will result in the piston colliding with the

end cap with insufficient cushioning.

 Observe the permissible shock absorber settings (èTab. 4).

3. Pressurize the corresponding port to swivel

the DRRD into the desired end position.

4. Loosen the lock nut on the shock absorber.

Fig. 8

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