Festo ELFC-KF User manual

en Operatings
instructions
8068670
2017-02
[8068672]
Guide axis
ELFC-KF

ELFC-KF
2 Festo – ELFC-KF – 2017-02 English
Original instructions
Identification of hazards and instructions on how to prevent them:
Danger
Immediate dangers which can lead to death or serious injuries
Warning
Hazards that can cause death or serious injuries
Caution
Hazards that can cause minor injuries
Other symbols:
Note
Material damage or loss of function
Recommendations, tips, references to other documentation
Essential or useful accessories
Information on environmentally sound usage
Text designations:
 Activities that may be carried out in any order
1. Activities that should be carried out in the order stated
– General lists
èResult of an action/References to more detailed information

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English – Guide axis ELFC-KF
Table of contents
1 About this document 4......................................................
2 Safety 4..................................................................
2.1 Safety instructions 4........................................................
2.2 Use for intended purpose 4...................................................
2.3 Qualification of specialized personnel 4.........................................
3 Further information 4.......................................................
4 Service 5.................................................................
5 Product overview 5.........................................................
5.1 Function 5.................................................................
5.2 Configuration 5............................................................
6 Transport 6...............................................................
7 Mounting 6...............................................................
7.1 Preparation 6..............................................................
7.2 Mounting 7................................................................
7.3 Attachment 7..............................................................
7.4 Mounting accessories 8......................................................
8 Commissioning 9...........................................................
9 Maintenance 9.............................................................
10 Dismounting 10.............................................................
11 Disposal 10................................................................
12 Fault clearance 10...........................................................
13 Technical data 11............................................................
14 Characteristic curves 13......................................................

ELFC-KF
4 Festo – ELFC-KF – 2017-02 English
1 About this document
For all available product documentation èwww.festo.com/pk.
The ELFC-KF guide axis is designated the “product” or “axis” in these operating instructions.
Read the operating instructions carefully before starting all work on the product.
2 Safety
2.1 Safety instructions
 Observe product labelling.
 Before working on the product, switch off the power supply and secure it against being switched on
again.
 Store the product in a cool, dry, UV-protected and corrosion-protected environment. Ensure storage
times are short.
 Protect the product during operation from damaging influences.
Damaging influences include grinding dust, glowing chips or sparks.
 Comply with tightening torques. Unless otherwise specified, the tolerance is ± 20 %.
2.2 Use for intended purpose
The axis is intended to be used for the basic design of the cantilever
or gantry systems, consisting of a drive axis and a passive guide
axis.
The axis is approved for the slide operating mode èFig. 1. Fig. 1
2.3 Qualification of specialized personnel
Only qualified personnel may perform installation, commissioning, maintenance and disassembly
of the product.
3 Further information
Accessories èwww.festo.com/catalogue.
Spare parts èwww.festo.com/spareparts.

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4 Service
Contact your regional Festo contact person if you have technical questions èwww.festo.com.
5 Product overview
5.1 Function
The slide of the ELFC-KF guide axis supports a load so that it can move. Owing to the coupling with
a drive axis (e.g. ELGC-TB-KF), the slide 4moves forwards and backwards. The slide is ball-bearing
guided. The reference position of the carriage can be determined with the help of proximity switches
(è7.4 Mounting accessories).
5.2 Configuration
123456
7
8
1
1Sealing air connection
2Profile housing with ball bearing guide
3Cover strip
4Slide
5Thread/centring holes for attachment
components
6Thread for accessories
7Slot for sensor bracket
8Slots for attachment
Fig. 2

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6 Transport
Note
Unexpected movement of components. The axis is unbraked and the carriage can move
freely.
 Secure slide during transport.
 Take product weight into account è13 Technical data.
 Comply with maximum permitted support spacing when attaching transportation aids
è14 Characteristic curves.
7 Mounting
7.1 Preparation
 Do not modify the screws and threaded pins.
Exception: immediate requirement for change by these operating instructions.
 Place the product in such a way that its control sections are
accessible (e.g. band reversing).
 Install product without tension or distortion.
 Fasten product to a mounting surface with flatness of 0.05 %
of the stoke length, but max. 0.5 mm.
For gantry applications, attention must also be paid to parallel
alignment or product heights in alignment of the axes.
For additional information, contact your local Festo Service.
 Take the required support clearances into consideration
è14 Characteristic curves.
Fig. 3
If the ELFC-KF guide axis is used in conjunction with a drive axis, e.g. ELGC-TB-KF:
 Use mounting surfaces with identical evenness for both axes.
 Use the same support spacing on the drive axis and on the guide axis. The guide axis is aligned by
moving the slide to the mounting points. Attach the guide axis when the slide with the transverse
connection is located in the area of the
attachment points. If necessary, use a connection with tolerance compensation (fixed bearing/mov
able bearing).
These measures prevent tension due to uneven deflection.

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7.2 Mounting
 Select mounting components èwww.festo.com/catalogue.
 Mount the mounting components outside the positioning range
to avoid collisions.
 Fasten axis to the profile (e.g. with profile mounting EAHF-L2).
 Tighten screws evenly.
Fig. 4
7.3 Attachment
Prerequisites
Note
A warped attachment component bends the slide
and shortens the service life of the guide.
 Use an attachment component with an even
surface.
Evenness: t = 0.01 mm
Fig. 5
t
 Place rated load in such a way that the break-down torque res
ulting from force F (parallel to the axis of motion) and lever arm
“a” are kept as small as possible èFig. 6.
 Avoid collisions of the mounting part and payload with other
mounting parts
aF
Fig. 6
Mounting
 Fasten the attachment to the slide with screws and centring
sleeves. Observe screw-in depth D and tightening torque
èTab. 1 .
For attachment components with their own guide:
 Adjust the guide and axis so that they are exactly parallel, or use
a connection that permits tolerance compensation. In this way,
the guide is not overloaded.
Fig. 7

ELFC-KF
8 Festo – ELFC-KF – 2017-02 English
Size 32 45 60 80
Screw M3 M4 M5 M6
Screw-in depth D [mm] 4 … 5 6 … 7.5 8.5 … 10 11 … 14
Tightening torque [Nm] 1.2 2.9 5.9 9.9
Centring H7 [mm] @2 @4 @5 @7
Tab. 1
7.4 Mounting accessories
To protect the end positions against uncontrolled excess travel:
 Check the necessity of proximity sensors (hardware limit switches).
If proximity sensors are used as limit switches:
 Preferably use proximity sensors with normally closed function.
This protects against excess travel beyond the end position if the proximity sensor cable is broken.
If proximity switches are used as reference switches:
 Use proximity sensors that correspond to the input of the controller being used.
 For inductive proximity sensors: Use switch lug èAssembly instructions of the accessory.
Mounting of proximity sensor
 Use proximity sensors with sensor bracket (A) in the slot 7
èassembly instructions for the accessory.
Fig. 8
(A)
7
Avoidance of contamination
 Connect sealing air. To do this, remove the cover 1on the hous
ing and connect compressed air/vacuum.
Fig. 9
1

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8 Commissioning
Caution
Risk of injury due to unexpected movement of com
ponents.
 Protect positioning range from access.
 Keep foreign objects out of the positioning
range.
 Perform commissioning at low speed.
Fig. 10
 Commission the unit following the operating instructions for the drive axis (e.g. ELGA-TB-KF). Refer
encing to a fixed stop may only be done on the drive axis and is not permissible on the guide axis.
9 Maintenance
Caution
Unexpected movement of components.
Injury due to impact or pinching.
 Before working on the product, switch off the control and secure it to prevent it from
being switched back on accidentally.
Checking the cover strip
 Check the cover band after every 2000 km of operating
distance.
Waves on the cover band are a sign for wear of the band
reverser.
Whenever waves form, retighten cover strip on both sides:
1. Loosen screws (C) èFig. 11.
2. Push the cover strip into the cover.
3. Tension cover strip with a clamping element (B) èFig. 11.
Clamping element èwww.festo.com/catalogue.
4. Tighten screws (tightening torque: 0.2 Nm).
If the cover strip can no longer be retensioned:
 Replace band reversers and cover èwww.festo.com/
spareparts.
Fig. 11
(C)
Cleaning
 Clean the axis as required with a soft cloth. Do not use aggressive cleaning agents.

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10 Dismounting
Caution
Unexpected movement of components.
Injury due to impact or pinching.
 Before working on the product, switch off the control and secure it to prevent it from
being switched back on accidentally.
 Observe instructions on transport è6 Transport.
Information about spare parts and auxiliary means èwww.festo.com/spareparts.
11 Disposal
 Dispose of the packaging and the product through environmentally friendly recycling in accordance
with applicable regulations.
12 Fault clearance
Malfunction Possible cause Remedy
Squeaking noises,
vibrations or the axis is not
running smoothly.
Tensions Install axis without tension,
Maintain evenness of bearing surface
è7.1 Preparation.
Change the arrangement of
the attachment component/payload.
Align axis so it is exactly parallel
to the second axis.
Vibrations at the carriage Operation in
the resonance point of
the axis.
Change travel speed.
Change acceleration.
Reinforce axis mounting.
Change payload geometry.
Oscillation decay time of
the profile is too long
Self-generated frequency
from profile and payload is
too low
Reinforce axis mounting.
Change payload geometry.
Slide does not move. Loads are too high. Reduce load mass/torques.
Retaining screws on tool
are too long.
Observe screw-in depth
è7.3 Attachment.
Slide travels over end
position.
Proximity sensor does not
switch.
Check proximity sensor, connections and
controller.
Cover strip has waves. Wear on cover strip
reversers
Retension cover strip è9 Maintenance.
Aluminium wear on axis Replace band reverser
èwww.festo.com/spareparts.
Tab. 2

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13 Technical data
Size1) 32 45 60 80
Design Mechanical axis
Guide Recirculating ball bearing guide
Assembly position Any
Max. speed [m/s] 1.5
Max. acceleration [m/s2]15
Ambient temperature [°C] 0 … +50
Storage temperature [°C] –20 … +60
Degree of protection IP40
2nd moment of area
Iy[mm4]38 x 103140 x 103441 x 1031.37 x 106
Iz[mm4]45 x 103170 x 103542 x 1031.66 x 106
Max. permitted forces on the slide1)
Fy[N] 150 300 600 900
Fz[N] 300 600 1800 2700
Max. permitted torques on the slide1)
Mx[Nm] 1.3 5.5 29.1 59.8
My= Mz[Nm] 1.1 4.7 31.8 56.2
1) The PositioningDrives engineering software is available for sizing èwww.festo.com/sp.
Tab. 3

ELFC-KF
12 Festo – ELFC-KF – 2017-02 English
Size 32 45 60 80
Note on materials Contains paint-wetting impairment substances
Materials
Cover Painted aluminum
Profile Anodised aluminium
Slides Aluminium
Guide, screws, cover strip Steel
Covers PA
Belt reverser POM
Weight
Zero stroke length [kg] 0.17 0.38 1.0 1.9
Per metre of stroke [kg] 1.1 2.3 4.3 7.3
Tab. 4

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14 Characteristic curves
Force Fy/Fzand support spacing L at a maximum deflection of 0.5 mm
(no middle support is required for ELFC-KF-32 to comply with the maximum deflection)
LL
ELFC-KF-45 ELFC-KF-45
ELFC-KF-60 ELFC-KF-60
ELFC-KF-80 ELFC-KF-80
Fig. 12

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Copyright:
Festo AG & Co. KG
Ruiter Straße 82
73734 Esslingen
Germany
Phone:
[phone]
Fax:
[phone]
E-mail:
[e-mail]
Internet:
www.festo.com