Installing The Circuitry; Installation Of The Effective Load; Electrical Installation - Festo ELFR Manual De Instrucciones

Profile mounting with MUE
Profile mounting in the groove 7
Fig. 4
· Tighten the fastening screws equally (tightening torque: è Fig. 5).
ELFR−...
Screw
Centring sleeve
Slot nut
Screw−in depth t
max
Projection l
Tightening torque
Fig. 5

5.2 Installation of the effective load

Note
If the aluminium slide becomes bent
against a curved effective load, the
service life of the guide will be re
duced.
· Make sure that the mounting
surface of the useful load is even to
within t 0.01 mm.
· Connect the slide units of the drive
axis and the guide axis so that they
are free of tension.
· Place the effective load so that the
pull−out torque from the force
(parallel to the axis of motion) and
lever arm remains low.
· Fasten the useful load to the slide
with 4 screws and slot nuts as well as
centring elements, if needed.
(Tightening torque è Fig. 5).
Mass geometries with projection in the
longitudinal direction of the slide:
· Make sure that the effective load
does not strike against the bearing
cap.

5.3 Electrical installation

To protect the end positions against overtravel:
· Check whether additional hardware proximity sensors are necessary.
If inductive proximity sensors are used as hardware proximity sensors:
· Use proximity sensors with normally closed function.
The normally closed function protects the ELFR against overtravel the end posi
tion if the proximity sensor cable is broken.
· Use proximity sensors that correspond to the input of the controller being used.
Slot nut mounting with NST
Slot nut mounting in the groove 7
35 45
M3 M5
ZBH−7
NST−3−M3 NST−5−M5
[mm] 3.8 6
[mm] 2
[Nm] 1 5
Fig. 6
Fig. 7
Fig. 8
If proximity sensors are used as reference switches:
· Attach the mounting kit with switch
lug (S) and sensor bracket (L)
according to assembly instructions
(è catalogue specifications,
www.festo.com/catalogue).
· Avoid external influence caused by
magnetic or ferrite parts in the
vicinity of the proximity sensors
(min. 3 mm distance).
To prevent contamination:
· Select the appropriate slot covers from our catalogue
(è www.festo.com/catalogue):

5.4 Installing the circuitry

Note
If used in safety−relevant applications, additional measures are necessary.
In Europe, for example, the standards in the EC machinery directive must be
observed.
Without additional measures in accordance with statutory minimum
requirements, the product is not suitable for use as a safety−relevant part of
control systems.
55
6 Commissioning
Warning
Moving masses can cause personal
6
injury or material damage (crushing).
· Make sure that, in the positioning
area:
nobody can place his/her hand in
the path of the moving load (e.g. by
providing a protective guard),
there are no objects in the
positioning range.
It should not be possible to touch
the ELFR until the mass has come
to a complete standstill.
· Commission the unit following the operating instructions for the drive axis
(e.g. ELGR).
7 Service and maintenance
Cleaning and maintenance:
· Clean the ELFR as required with a soft cloth.
All media gentle to the material may be used as cleaning agents.
Relubrication of the ELFR is not permissible.
· Regularly check the play in the plain−bearing guide according to your
application. Depending on the load, the guide backlash rises with increasing
duration of operation.
8 Disassembly and repair
· Recommendation: Return the ELFR to our repair service.
This ensures that special attention will be paid to the necessary fine adjust
ments and inspections.
· Information on spare parts and aids can be found under:
www.festo.com/spareparts
9 Accessories
Note
· Please select the appropriate accessories from our catalogue
è www.festo.com/catalogue
(S) (L)
Fig. 9
Fig. 10