ELGR/ELGG
Festo AG & Co. KG
Postfach
73726 Esslingen
Germany
+49 711 347-0
www.festo.com
Operating instructions
8038418
1406b
[8038420]
Original: de
Toothed belt axis ELGR/ELGG
English
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Note
Special, pre-configured axis/motor and controller combinations are available
with the OMS system (Optimized Motion Series
è
www.festo.com).
Note
Installation and commissioning must be carried out only by properly qualified
personnel in accordance with these operating instructions.
1
Operating elements
1
2
3
4
Fig. 1
7
6
5
8
9
1
Bearing cap
2
Cover plate
3
Slide
4
Guide rod
5
Toothed belt
6
Drive hollow shaft
7
Slot for slot nuts and foot
mounting
8
Slide, operates in opposite direc
tions (ELGG only)
9
Central support, optional
(ELGG only)
2
Function and application
A toothed belt on a drive hollow shaft converts the rotation of a motor into a linear
motion. The slide unit
3
/
8
will then move backwards and forwards. The refer
ence position of the slide can be queried by means of an inductive proximity
sensor, switch lug and sensor bracket (
è
10. Accessories).
The toothed belt axis ELGR/ELGG is intended for positioning payloads. It is
approved for slide operating mode.
The ELGR/ELGG is not approved for operating conditions where water soluble
grease or oils can be transferred to the toothed belt.
Note
The ELGR/ELGG toothed belt axis is not self-locking: If the input torque is not
applied, the slide is freely movable. Generally, a latching function of the com
plete system can be achieved with motors with an integrated holding brake or
with high gear ratios or self-locking gear design (e.g. for vertical operation).
Select the corresponding Festo motor from our catalogue (
è
Catalogue
specifications, www.festo.com/catalogue and the “Positioning Drives” sizing
software
è
www.festo.com).
3
Transport and storage
Warning
During vertical transport, an unsecured slide unit can fall down (crushing).
Transport the product with the transport packaging horizontally on the guide
rods with a secured slide.
Take the product's weight into account. It weighs up to 30 kg.
Ensure storage conditions as follows:
– Short storage times and
– Store in cool, dry, well-shaded locations that do not present a risk of corro
sion.
– No oils, greases or grease-dissolving vapours.
In this way you ensure the performance of the toothed belt.
4
Requirements for product use
Warning
Unexpectedly fast payloads can harm people or property (risk of crushing).
Apply power to the drive motor, at first limited to low speeds and torques.
Free-running toothed belts can catch objects (injuries).
Make sure that no objects, such as hair or clothing can be pulled into the
toothed belt axis by the free-running toothed belt (e.g. through a cover).
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 reduce the service life of the product (e.g. ozone).
Comply with the regulations of the trade association, the German Technical
Control Board (TÜV) or corresponding national regulations.
Remove transport packaging such as films and cardboard.
The packaging is intended for recycling.
Use the product in its original status, without any unauthorised product
modifications.
Note the warnings and instructions on the product and in the relevant operating
instructions.
Take the tolerance of the tightening torques into account. Unless otherwise
specified, the tolerance is ±20 %.
5
Installation
5.1 Mechanical installation
Do not modify the screws and
threaded pins if not directly reques
ted to do so in these operating in
structions.
Fit the motor onto the toothed belt
axis in accordance with the assembly
instructions for the motor mounting
kit recommended in the catalogue.
Fig. 2
For installation in a vertical or inclined position:
Warning
Falling loads can cause personal injury
and material damage (crushing). If
there is a power failure or the toothed
belt breaks, the work load will drop
down.
Make sure that you only use motors
with an integrated spring-loaded
holding brake.
Check whether additional external
safety measures against damage
due to breaking of the toothed
belt are required (e.g. toothed
latches or moveable bolts).
Fig. 3
Ensure an installation without distortions and bends (evenness of the bearing
surface ≤ 0.05 % of the stroke length; max. 0.5 mm).
Place the ELGR/ELGG so that the operating elements are accessible.
Observe the maximum sag
è
Chapter 12. Technical data.
