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Festo 7ELGA-BS-KFa_en
4.6
Replacing the measuring tape of the incremental displacement encoder
4.6.1
Remove the old measuring tape
1. Dismantle the sensor bracket the measuring unit.
2. Unscrew the countersunk screws of the caps from the slot nuts at both ends
of the magnetic strip.
3. Remove the caps.
4. Remove the measuring tape carefully from the cylinder barrel, do
not
use
any sharp-edged auxiliary means.
5. Clean the cylinder barrel to remove adhesive residues.
Festo recommends LOCTITE 7063 and LOCTITE 7070 for cleaning.
4.6.2
Sticking on the new measuring tape
Note
To prevent stresses in the magnetic strip, it must not be extended, twisted or supported or handled with the
magnetised plastic strip facing inwards (min. radius of curvature 150 mm).
When sticking on the magnetic strip note the markings on the magnetic strip and on the sensor head. Incorrect
assembly produces incorrect values. A magnetic strip that is already stuck on is irreparably damaged on removal and
cannot be reused.
Structure of the measuring tape
1
Cover band
2
Double-sided adhesive tape with protective film
3
Double-sided adhesive tape with protective film
4
Cylinder barrel
5
Steel strip
6
Adhesive tape
7
Magnetic strip
–
1
and
2
are connected to each other in the factory
–
3
,
5
,
6
and
7
are connected to each other in the factory
1
4
3
2
7
6
5
Summary of Contents for 8024918
Page 1: ...Repair instructions en Spindle axis ELGA BS KF 7ELGA BS KFa_en...
Page 12: ...12 52 Festo 7ELGA BS KFa_en 3 1 ELGA BS KF 70 ML components overview...
Page 14: ...14 52 Festo 7ELGA BS KFa_en 3 2 ELGA BS KF 80 ML components overview...
Page 16: ...16 52 Festo 7ELGA BS KFa_en 3 3 ELGA BS KF 120 ML components overview...
Page 18: ...18 52 Festo 7ELGA BS KFa_en 3 4 ELGA BS KF 150 ML components overview...
