Festo DGC-HD Series Bedienungsanleitung

(en) Operating

instructions

8074748

2017-10a

[8074750]

Linear drive

DGC-HD

2Festo – DGC-HD – 2017-10a

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 – Linear drive DGC-HD 3.......................................................

DGC-HD

Festo – DGC-HD – 2017-10a English 3

English – Linear drive DGC-HD

Table of contents

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

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

3 Transport and storage 5.....................................................

4 Requirements for product use 6...............................................

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

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

5.1.1 Carrying out the product installation 7..................................

5.1.2 Installation of the effective load 9.....................................

5.1.3 Installation of accessories 10..........................................

5.2 Pneumatic installation 11.....................................................

6 Commissioning 12...........................................................

7 Service and maintenance 14...................................................

8 Repair 15..................................................................

9 Accessories 15..............................................................

10 Troubleshooting 16..........................................................

11 Technical data 17............................................................

12 Characteristic curves 18......................................................

DGC-HD

4 Festo – DGC-HD – 2017-10a English

Documentation on the product

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

1 Control sections and connections

13 4256

89aJaA

1Shock absorbers (2x)

2Guide rail (2x)

3Lubrication hole for bearing guide (4x)

4Thread and centring hole for mounting the

effective load (12x)

5Slide

6Thread for optional switch lug (on both

sides, 2x)

7Supply ports

8Surface for profile mounting

9Slot for slot nut mounting and accessories

(on both sides)

aJ Groove for proximity switch (on both sides)

aA Supply ports with plug screws

Fig. 1

DGC-HD

Festo – DGC-HD – 2017-10a English 5

2 Function and application

When the compressed air ports are pressurised alternately, the internal slide moves backwards and

forwards in the cylinder barrel. By means of a rigid connection, the slide 5also moves. The slot in the

cylinder barrel required for this is covered by a band system. The slide is bearing mounted. The refer

ence position of the slide can be detected using proximity sensors in the slots aJ.

The linear drive DGC-...-HD is intended for positioning effective

loads with large loads. It is approved for the slide and yoke

operating modes (èobserve load limits).

Pressureless movement of the slide is permitted only for fault cor

rection and at low speed. If excessive speed is used, the resulting

low pressure can pull the sealing band into the piston chamber.

This leads to:

– high leakage and

– impermissible acceleration (e.g. with vertical mounting posi

tion).

Fig. 2 Slide operation

Fig. 3 Yoke operation

3 Transport and storage

Note

 Avoid touching the guide rail with your hands during transport und storage. Other

wise the layer of grease will be damaged.

 Take the product's weight into account. Depending on the version, the DGC-HD can weigh up to

100 kg.

For transport, the conveyors must be positioned at the permissible support spacing

(support spacing è12 characteristic curves).

 Make sure storage conditions are as follows:

– short storage times

– cool, dry, well-shaded, corrosion-resistant locations.

DGC-HD

6 Festo – DGC-HD – 2017-10a English

4 Requirements for product use

Note

Malfunctions will occur if the device is not used correctly.

 Make sure that the specifications contained in this chapter are adhered to at all

times.

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

– regulations and standards

– regulations of testing organisations and insurers

– national specifications.

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

 Remove all transport packaging, such as foils, caps and cardboard.

The packaging is intended for recycling

(exception: oil paper = residual waste).

 Observe the local regulations for environmentally friendly waste management of electronic compon

ents.

 Take into account the material specifications (èTechnical data chapter).

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

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

Corrosive environments (e.g. ozone) reduce the service life of the product.

 Compare the limit values in these operating instructions with those of your application (e.g. forces,

torques, temperatures, loads, 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 %.

 Make sure there is a supply of correctly prepared compressed air (èTechnical data chapter).

DGC-HD

Festo – DGC-HD – 2017-10a English 7

5 Installation

5.1 Mechanical installation

 Avoid the sealing band being pressed and/or sucked in.

Damage to the sealing band reduces its reliability in operation. Jerky movement of the unpressur

ised slide can cause a partial vacuum that sucks the sealing band into the piston chamber.

 Leave all screws and threaded bolts in their original states, unless you are requested to modify

them in these instructions.

 Prevent the band system from becoming damaged or excessively dirty.

Damage to the DGC-HD will reduce its reliability and service life.

5.1.1 Carrying out the product installation

Note

Heavy tensile loads may cause the screws in the cover to be pulled out.

 Fasten the DGC-HD with profile mountings or slot nuts (èTab. 1). Mounting on the

connector/end cap is not possible.

 When installing, ensure that there is no tension or deflections

present (evenness of mounting surface ≤0.05 % of the stroke

length; max. 0.5 mm). For gantry applications, parallel align

ment of the axes is additionally required. For additional informa

tion, please contact your local Festo Service. Fig. 4

 Place the DGC-HD so that all the control sections are accessible.

 Observe the required support spacings. The diagrams (è12 Characteristic curves) show the sup

port spacing, which is dependent on the mounting position and effective load. If the specified min

imum distances are exceeded, it is imperative to carry out an individual functional test.

Note

Unsuitable mounting techniques can damage the DGC-HD.

 Make sure that the mounting components are outside the positioning range of the

slide.

DGC-HD

8 Festo – DGC-HD – 2017-10a English

 Fasten the DGC-HD.

 Please select the corresponding accessories from our catalogue (èwww.festo.com/catalogue).

Profile mounting Slot nut mounting

MUE NST

Profile mounting in the slot aA of the mounting

surface 8

Slot nut mounting in slot aA.

When tilted, the slot nuts slide into the slot at

each position of the profile

Tab. 1

 Tighten the mounting screws uniformly with the following tightening torque.

Size 18 25 40

Screw MUE M5 M5 M8

NST (lateral) M5 M5 M6

NST (underneath) M5 M6 M6

Tightening torque MUE [Nm] 5 5 20

NST (lateral) [Nm] 5.9 5.9 9.9

NST (underneath) [Nm] 5.9 9.9 9.9

Tab. 2

DGC-HD

Festo – DGC-HD – 2017-10a English 9

5.1.2 Installation of the effective load

Hard and rigid effective loads (e.g. steel):

Note

If the aluminium slide is bent against a curved effect

ive load, the service life of the guide will be reduced.

 Make sure that the mounting surface of the effect

ive loads is even to within t ≤ 0.01 mm.

If additional slides are used, possible differences in

height must be compensated for.

Fig. 5

 Place the effective load in such a way that the break-down

torque resulting from force F (parallel to the axis of motion) and

lever arm “a” remains small.

Fig. 6

 Fasten the effective load to the slide with the screws and cent

ring sleeves.

 Make sure that the tightening torques and maximum screw-in

depth D is adhered to.

Fig. 7

Size 18 25 40

Screw (lateral/top) M5 M6 M6

Max. screw-in depth D [mm] 8.4 9.5 10

Centring (H7) [mm] 9 9 9

Tightening torque [Nm] 5.9 9.9 9.9

Tab. 3

Effective loads with own guide:

 Adjust the guides of the effective load and of the DGC-HD so that they are exactly parallel.

This avoids overloading of the guide and increased wear.

DGC-HD

10 Festo – DGC-HD – 2017-10a English

5.1.3 Installation of accessories

If proximity sensors are used:

 Use:

– inductive proximity sensors with switch lug aB (èAssembly instructions of the accessory used)

in the slot aJ or with mounting bracket aC

– magnetic proximity sensors in the slot aJ.

Mounting

in the grooves aJ (èFig. 1) with mounting bracket aC

aB aC

Tab. 4

To protect the end positions:

 Use emergency buffer or shock absorber (èAssembly instructions of the accessory used).

To avoid contamination:

 Use slot covers in all unused grooves.

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Dieses Handbuch passt für folgende Modelle

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