Festo DGSL User manual

DGSL
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
[phone]
www.festo.com
Operating instructions
(Original instructions)
8067708
2017-01g
[8067710]
Mini slide DGSL English...............................................
Note
Installation and commissioning are to be carried out only by qualified personnel
in accordance with the operating instructions.
1 Further applicable documents
For all available product documentation èwww.festo.com/pk
2 Operating elements and ports
1 5
8
6
739
aJ
2 3 4
aAaBaC
1Cushioning component:
– Elastic (DGSL-…-E/-P/-P1
– Hydraulic (DGSL-…-Y3/-Y11)
– None (DGSL-…-N)
2Drill hole for mounting the mini
slide (lies concealed)
3Thread with centring recess for
mounting the effective load
(centring sleeves included in scope
of delivery)
4Slide/bearing guide
5Yoke plate
6Fixed stop
7Thread with centring recess for
mounting the mini slide
8Piston rod
9Slots for proximity sensor
aJ Compressed air supply port
(retracting)
aA Compressed air supply port
(extending)
aB Compressed air supply port
(extending) with blanking screw1)
aC Compressed air supply port
(retracting) with blanking screw1)
1) In condition on delivery
Fig. 1
3 Function and application
The DGSL mini slide is a non-rotating single-piston drive with roller bearing guide.
When the compressed air supply ports are pressurized reciprocally, the slide
moves back and forth. The slide is braked by elastic cushioning components in the
case of DGSL-…-E/-P/-P1 and by hydraulic shock absorbers in the case of
DGSL-…-Y3/-Y11. In the case of DGSL-…-N, cushioning elements must be attached
for both end positions (è6.2 DGSL-…-N without cushioning components).
The DGSL mini slide is intended for the space-saving transport of masses. A high
degree of positioning accuracy is achieved.
4 Transport and storage
 Take into account the weight of the DGSL.
Depending on the version, the DGSL can weigh up to 7 kg.
 Ensure storage conditions as follows:
– Short storage times and
– Cool, dry, well-shaded, corrosion-resistant locations.
5 Requirements for product use
Note
Malfunctions will occur if the device is incorrectly used.
 Make sure that the specifications contained in this chapter are adhered to at
all times.
 Observe the warnings and notes on the product and in the relevant operating
instructions.
 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 adherence to the load limits.
 Take into consideration the ambient conditions at the location of use.
Corrosive environments will reduce the service life of the product (e.g., ozone).
 Comply with the regulations of the workers’ compensation trade association,
the German Technical Control Board (TÜV), of the VDE or relevant national
regulations.
 Use the product in its original status, without any unauthorised product
modifications.
 Remove all transport packaging, such as foils, caps, cardboard.
Exception:
– possibly covers in the pneumatic connections.
The material used in the packaging has been specifically chosen for its
recyclability (exception: oiled paper = residual waste).
 Make sure there is a supply of correctly prepared compressed air
(è13 Technical data).
 Maintain the selected medium for the total service life of the product. Example:
Always use non-lubricated compressed air.
 Pressurize your entire system slowly. There will then be no uncontrolled
movements.
For slow start-up pressurisation, use on-off valve HEL.
 Take the tolerance of the tightening torques into account. Unless otherwise
specified, the tolerance is ± 20 %.
6 Installation
Note
For vertical installation:
 Make sure that the slide has reached a stable position when it comes to
astop (e.g., the lowest point or secured with external stops).
6.1 Installation, mechanical
 Handle the DGSL with care so that the slide guide is not damaged.
This could impair the roller bearing function.
 Leave all screws and threaded bolts in their original states, unless you are
requested to modify them in these instructions.
For safety reasons, they are fixed with a screw locking agent.
 Make sure there is sufficient space
for the pneumatic connections, the
control sections and for possible
replacement of the cushioning
component and proximity switches.
Fig. 2
 Make sure that the device is installed
free of distortion and deflection.
Fig. 3
Installing the effective load
Note
If pins strike against the yoke plate, the
mechanical connector can be destroyed.
 Push a metal plate between the yoke plate and
the housing as a counterholder.
 Then press the required pins into the yoke
plate. Fig. 4

 Screw in two screws for mounting the effective
load:
– into the yoke plate or
– into the slide.
Fig. 5
Installation of the DGSL:
 Use the included centring sleeves.
 Check whether adapter plates from the Festo multi-axis kit are required.
 Mount the DGSL with the stated minimum number of screws. (èTable Fig. 6).
If the slide is pushed into the retracted end position, the through-holes become
accessible.
Stroke <50 mm Stroke 50 mm
Base-surface
mounting with:
– Threaded holes
– Through-holes
– Centring sleeves
Minimum number of
screws
Two Three
Fig. 6
Position sensing of the slide end
positions:
 Place the proximity switches in the
grooves 9.
On the DGSL-4 only proximity
switches type SMT-10 are permitted.
 With the DGSL-4/-8, use preferably
the lower groove on the base side.
Fig. 7 9
Rough setting of the end positions:
Note
The DGSL may be damaged if the
slide is moved without a fixed stop.
 Make sure that the slide always
remains in the retracted end
position when the fixed stop is
dismantled.
Fig. 8
1. Move the slide into the retracted end position.
2. Unscrew the mounting screws of the fixed stop and the required cover aD
(èFig. 10).
A reduction of a max. 2 standard strokes is possible (for DGSL-…-E, the standard
stroke range cannot be completely covered).
Stroke 0 10 20 30 40 50 80 100 150 200
Stroke
reduction1)
Fig. 9
1) Not for DGSL-…-E
3. Replace the fixed stop 6with the cover aD.
4. Screw the fastening screws in again. The tightening
torque is summarised in the following table
(èFig. 11).
Fig. 10
aD
6
DGSL 4 6 8 10 12 16 20 25
Tightening torque [Nm] 0.76 1.3 1.3 2.9 2.9 6 9 9
Fig. 11
5. Complete the precision adjustment of the end positions on the cushioning
components (è7 Commissioning).
6.2 DGSL-…-N without cushioning components
Note
Operating the DGSL-…-N without cushioning will destroy the DGSL.
 Make sure that the DGSL is operated only with cushioning.
Cushioning components for retrofitting cushioning can be ordered separately and
integrated into the DGSL subsequently (è11 Accessories).
Note
 Make sure that the following specifications are observed:
– Max. permissible stop force (è13 Technical data),
– Use of guards (e.g., cover cap è11 Accessories).
6.3 Installation, pneumatic
 Use one-way flow control valves for setting the
speed of the slide.
These are screwed directly into the compressed
air supply ports.
With size DGSL-4/-6, L-shaped restrictors on the
front of the supply port enable unhindered
access for cushioning setting (èAccessories
atwww.festo.com/catalogue).
Fig. 12 aA
aJ
 Remove the transport covers on the compressed
air supply ports.
 Connect tubes to the compressed air supply
ports:
–aJ retracting
–aA extending
The connecting threads must be sealed. The
alternative connections aB and aC to the
compressed air supply ports intended at the
factory are prefabricated for the DGSL. They are
sealed with blanking plugs.
Fig. 13 aA
aB
aJ
aC
6.4 Installation, electric
Position scanning with proximity sensors:
 Observe the minimum distances L1and L2
between static or moving ferritic masses and the
proximity sensors (èFig. 14).
In this way, you will avoid incorrect switching as
a result of external influences.
Fig. 14
DGSL 4 6 8 10 12 16 20 25
L1 to ferritic materials [mm] 5 5 0
L2 to ferritic materials [mm] 15 0
Fig. 15
7 Commissioning
7.1 Preparing for commissioning
Note
 Make sure that the following conditions
are observed:
– The distance L of the cushioning
component must be maintained at
aminimum (factory setting)
(èFig. 16 and Fig. 17).
Falling below the factory settings
destroys the guide.
– For all setting work, all threads of the
cushioning component are constantly
being manipulated. Fig. 16
DGSL-…-E
DGSL-…-P
DGSL-…-P1
DGSL-…-Y3
DGSL-…-Y11
DGSL 4 6 8 10 12 16 20 25
Distance L with DGSL-…-E/-P/-P1 [mm] 1 1.5
Distance L with DGSL-…-Y3/-Y11 [mm] – – 1.5
Fig. 17

For precision adjustment of the end positions:
1. Loosen the clamping component aE.
2. Position the slide by hand in the desired
end position.
Fig. 18
aE
3. Turn the cushioning component 1with
ahexagon wrench until the end position is
reached (èFig. 20).
The maximum torque must be observed
here (èFig. 21).
4. Retighten the clamping component with
the following tightening torque
(èFig. 21).
Fig. 19
1
DGSL-…-E,DGSL-…-P
with rubber buffer
DGSL-…-P1
with rubber buffer and
stop sleeve
DGSL-…-Y3,
DGSL-…-Y11
with shock absorber1)
No metallic stop Metallic stop
The rubber buffer touches the
slide.
The stop sleeve touches the
slide (against the force of the
cushioning)
The shock absorber housing/
reducing sleeve (for
DGSL-...-Y11) touches the slide
(against the force of the shock
absorber)
1) If the maximum torque for the internal hexagon socket on the DGSL-…-Y3 is undershot, the hexagon
inthe shock absorber spins. The maximum torque is summarised in the following table (èFig. 21).
Fig. 20
DGSL 4 6 8 10 12 16 20 25
For all DGSL
Tightening torque
of clamping
component
[Nm] 0.15 0.2 0.3 0.8 1.2 2.5 2.5 3.5
Only for DGSL-…-Y3
Max. torque of
internal hexagon
socket
[Nm] – – 0.5 0.8 2.2 5 8 13
Shock absorber
type DYSW-…-Y1F – – 4-6 5-8 7-10 8-14 10-17 12-20
Only for DGSL-…-Y11
Max. torque
reducing sleeve [Nm] – – – 0.8 2.2 5 8 13
Max. torque of
internal hexagon
socket
[Nm] – – – 0.5 0.8 2.2 5 8
Shock absorber
type DYSW-…-Y1F – – – 4-6 5-8 7-10 8-14 10-17
Fig. 21
Note
The exact slide position must be checked during a test run with compressed air
applied and, if necessary, corrected.
7.2 Performing commissioning
Before each commissioning and in operation:
Warning
Make sure that in the travel range of the drive
– Nobody can reach into the path of the moving
components (e.g. by providing a protective
guard).
– There are no foreign objects (e.g., hexagon
wrench when setting the end position under
pressure).
Fig. 22
Place your effective load on the slide of the
DGSL so that the break-down torque of the
dynamic force F and the lever arm a remains
small.
Fig. 23
 Turn both upstream one-way flow control valves
– at first completely closed
– then one turn open again.
Fig. 24
Note
 Make sure that the operating conditions lie within the permissible ranges.
1. Pressurize the drive as follows:
– Pressurise the drive by slowly pressurising one side.
For slow start-up pressurisation, use on-off valve HEL.
The slide moves into an end position.
2. Start a test run with the moveable mass.
3. During the test run check whether the following points need to be modified:
– the speed and the acceleration of the moveable mass
– the end position
– the mass of the effective load
– the position of the proximity sensors.
If this is the case, the modifications must be carried out only when the slide is at
rest.
4. Open up the one-way flow control valves slowly
until the desired slide speed is reached.
The maximum permissible speed must not be
exceeded here (è13 Technical data).
The slide should reach the end position safely,
butnot strike hard against it.
Too hard of an impact will cause the slide to
rebound out of the end position.
Fig. 25
If the slide can be heard to strike hard:
5. Interrupt the test run.
Causes of hard impact may be:
– the moveable mass is too high
– the slide speed is too high
– no compressed air cushion on the exhaust side
– cushioning not sufficient (can be set on the DGSL-…-P1).
6. Make sure you remedy the above-mentioned causes.
7. Repeat the test run.
When all necessary corrections have been undertaken:
8. Terminate the test run.
9. Mount the proximity switches in their final positions.
8 Operation
Warning
Make sure that in the travel range of the drive
– Nobody can reach into the path of the moving
components (e.g. by providing a protective
guard).
– There are no foreign objects
(e.g., hexagon wrench when setting the end
position under pressure).
It must not be possible to touch the drive until
the moveable mass has come to a complete
standstill.
Fig. 26
9 Maintenance and care
For cleaning:
 Exhaust the DGSL.
 Clean the DGSL if required with a soft, damp cloth. Do not use aggressive
cleaning agents.
 Lubricate the following components of the DGSL:
Component Ungreased surfaces of the
piston rod Roller bearing of the slide
Lubrication interval As required (e.g. after cleaning), otherwise the DGSL is maintenance-
free
Reason for lubrication Humidity protection and gliding
quality Gliding quality
Lubricating point Piston rod Guide rail
Lubricating procedure Push the slide backwards and forwards by hand when lubricating
(evendistribution of grease)
Lubricating grease LUB-KC1 from Festo (èSpare parts catalogue at www.festo.com)
Fig. 27

 Check to see if more frequent lubrication is required. This may be the case with:
– high temperatures
– excessive dirt
– grease-solvent fluids or vapours nearby.
Note
Hard knocking requires the following remedy:
 Reduce the impact speed; measure the cushioning length (s) as a check
(è13 Technical data). Insufficient cushioning indicates a considerable loss of
oil. In this case, the DYSW must be replaced.
s: Cushioning length
Fig. 28
 Check the cushioning components 1every 2 million cycles for signs of wear
(e.g. abrasion, oil leakage, etc.).
 Replace the cushioning elements if there are signs of wear, at the latest after
every 5 million cycles (keep clamping component in a safe place when during
dismantling).
10 Repair and disassembly
 Exhaust the complete system and the device.
 Recommendation: Send the product to our repair service.
This way the required fine tuning and tests will be taken into special
consideration.
 Observe environmental protection requirements when disposing of the DYSW
(hazardous waste disposal). The DYSW is filled with hydraulic oil. Due to the
design the hydraulic oil cannot be refilled.
Note
In particular, attempting to repair the slide guide yourself is strongly
discouraged.
 Information about spare parts and aids can be found at:
www.festo.com/spareparts
To replace the integrated cushioning components 1:
 Observe the section “Precision adjustment of the
end positions” in the chapter “Commissioning”.
Fig. 29
aE
Carry out the following steps:
1. Loosen the clamping component aE on the cushioning component
(clampingcomponent can fall out).
2. Replace cushioning component (èAccessories at www.festo.com/catalogue).
– DYEF-S-…-Y1 for DGSL-…-E
– DYEF-…-Y1 for DGSL-…-P
– DYEF-…-Y1F for DGSL-…-P1
– DYSW-…-Y1F for DGSL-…-Y3
– DYSW-…-Y1F for DGSL-…-Y11
3. Carry out the precision adjustment of the end positions (è7 Commissioning).
11 Accessories
Note
 Please select the appropriate accessories from our catalogue
(è www.festo.com/catalogue).
12 Trouble-shooting
Malfunction Possible cause Remedy
Uneven movement of
the moving loads
One-way flow control valve not
installed correctly
Check the flow control functions
(supply or exhaust air flow
control)
Bearing surfaces dirty Clean the bearing surfaces
Hard impact at the end
position
Speed too high Reduce speed
No or too low cushioning – Adjust shock absorber/fixed
stop again (è7.1 Preparation
of commissioning)
– Reduce speed
– Check and, if necessary,
replace cushioning
components
Missing air cushion Simultaneous pressurization of
both compressed air supply ports
with subsequent exhausting of
one side
Shock absorber defective
(onlyfor DGSL-…-Y3/…-Y11)
Replace shock absorbers
(è10 Repair and disassembly)
Payload too great Reduce effective load
Slide in initial position
despite pressurization
Tubing connection error – Check blanking plug
– Check tubing connection
Slide speed too low – Pressurization cross-sectional
area too small
– Flow control valves set
incorrectly
Check pressurization
cross-sectional area and
adjustment of throttle
Fig. 30
13 Technical data
DGSL 4 6 8 10 12 16 20 25
Design Double-acting drive with yoke kinematics and ball-bearing
cage guide
Assembly
position
Any
Cushioning E/P Elastic cushioning, without metal end position, at both
ends
P1 Elastic cushioning, with metal end position, at both metal
end positions
Y3 – With progressive shock absorber and
metal end position, both ends
Y11 – With progressive shock absorber
and metal end position, both ends
N – Without cushioning
Operating medium Compressed air to ISO 8573-1:2010 [7:4:4]
Operating
pressure
[bar] 2.5 … 8 1.5 … 8 1 … 8
Pneumatic port M3 M5 Gx
N – M5 suitable for
10-32 UNF
xNPT
Impact energy at
the end positions
E/P [Nm] 0.015 0.05 0.08 0.12 0.25 0.35 0.45 0.55
P1 [Nm] 0.005 0.02 0.03 0.04 0.06 0.12 0.2 0.25
Y3 [Nm] – – 0.5 1 2 4 7 10
Y11 [Nm] – – – 0.5 1 2 4 7
Theoretical force
at 6 bar
Advance [N] 17 30 47 68 121 188 295 483
Return [N] 13 23 40 51 104 158 247 415
Max. permissible forces and
torques
èCatalogue information
www.festo.com/catalogue/dgsl
Max. speed [m/s] 0.5 0.8
Repetition
accuracy
E/P [mm] 0.3
P1/Y3/…
Y11
[mm] ±0.01
Ambient temperature [°C] 0… 60 (observe temperature range of proximity sensors)
Note on materials Free of copper and PTFE
Information on materials
Housing, cover, yoke plate Anodised wrought aluminium alloy
Screws Steel
Piston rod, slide, adjusting
screw
High-alloy stainless steel
Cover, stops, driver Beryllium bronze, nickel-plated
Buffer Nitrile rubber
Seals Hydrated nitrile rubber, polyurethane
Weight [kg]
Min. stroke: 0.08 0.16 0.24 0.4 0.6 0.9 1.5 2.5
Max. stroke 0.1 0.23 0.45 0.8 1.5 2.0 4.3 6.1
DYSW 4-6 5-8 7-10 8-14 10-17 12-20
Cushioning length (s) [mm] 6 8 10 14 17 20
Max. energy absorption
perstroke1)
[J] 0.8 1.3 2.5 4 8 12
Max. energy consumption
per hour
[kJ] 7 10 15 21 30 41
1) Additional technical data èwww.festo.com/catalogue
Fig. 31