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· Make sure that the device is fitted free of mechanical stress and sagging (even
ness of bearing surface 0.05% of the stroke length; max. 0.5 mm).
· Position the ELGR/ELGG so that its operating elements can be reached.
· Observe the maximum sag è chapter 12. Technical data.
Note
Unsuitable mounting techniques can reduce the service life of the ELGR/ELGG
considerably.
· Make sure that the mounting components are outside the travel range of the
slide (e.g. protruding slot nuts).
· Take into account the asymmetric
geometry of the ELGR/ELGG.
Depending on the orientation, the
slide unit or bearing cap protrudes
beyond the contour by the dimension
l (observe position X of the proximity
sensor).
· Observe the screw−in depth t
max
when using slot nuts (è Fig. 7).
· Attach the ELGR/ELGG and secure
the central support, if available
(è Fig. 6).
· Please select the appropriate accessories from our catalogue
www.festo.com/catalogue
Profile mounting
Slot nut mounting
with MUE
with NST
Profile mounting in the
Slot nut mounting in the
groove 7
groove 7
1) Fasten the central support in the centre, otherwise the stroke will be reduced.
Fig. 6
· Turn the mounting screws until they are equally tight.
The tightening torque is summarised in the following table.
ELGR/ELGG−...
Screw
Centring sleeve
Slot nut
Screw−in depth t
max
Projection l
Tightening torque
Fig. 7
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.
Fig. 4
Fig. 5
Central support with
MUE/NST (ELGG only)
Profile or 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. 8
· 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. 7).
Mass geometries with projection in the
longitudinal direction of the slide:
· Make sure that the useful load does
not strike against the motor or
bearing cap or, in the case of the
ELGG, against the central support.
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 limit switches:
· Use proximity sensors with normally closed function.
The normally closed function protects the ELGR/ELGG against overtravelling the
end position if the proximity sensor cable is broken.
· Use proximity sensors that correspond to the input of the controller being used.
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
1)
requirements, the product is not suitable for use as a safety−relevant part of
control systems.
6
Commissioning
55
Warning
Moving masses can cause personal
injury or material damage (crushing).
· Make sure that, in the positioning
range:
6
nobody can place his/her hand in
the path of the moving load
(e. g. by means of a protective
guard)
there are no foreign objects
It should not be possible to touch
the ELGR/ELGG until the mass has
come to a complete standstill.
Fig. 9
Fig. 10
(S)
(L)
Fig. 11
Fig. 12
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