EVOLUTE RTLA50-S installation guide
6
Scale application
The scale applicator A-9589-0095 is designed specifically for use with EVOLUTE readheads
and RTLA50-S scale.
3
1
Allow scale to acclimatize to installation environment prior to installation.
Mark out the ‘START’ and ‘FINISH’ points for the scale on the axis substrate – ensure that there is
room for the optional end covers if required (see ‘RTLA50-S (with adhesive datum clamp) installation
drawing’).
Thoroughly clean and degrease the substrate using recommended solvents (see ‘Storage and
handling’). Allow substrate to dry before applying scale.
Mount the appropriate scale applicator to the readhead mounting
bracket using M3 screws. Place the shim supplied with the readhead
between the applicator and substrate to set the nominal height.
NOTE:
Scale applicator can be mounted either way round to enable
easiest orientation for scale installation.
Move axis to ‘START’ of travel.
Begin to remove the backing paper
from the scale and insert scale into the
applicator up to the ‘START’ point (as
shown). Ensure backing tape is routed
under the splitter screw.
Apply finger pressure to the scale at the ‘START’ point, using a clean lint-free cloth, to ensure scale
end adheres well to the substrate.
Slowly and smoothly move the applicator through the entire axis of travel, ensuring the backing paper
is pulled manually from the scale and does not catch under the applicator.
Remove applicator and, if necessary, adhere the remaining scale manually. Apply firm finger pressure
via a clean lint-free cloth along the length of the scale after application to ensure complete adhesion.
Clean scale using Renishaw scale cleaning wipes (A-9523-4040) or a clean, dry, lint-free cloth.
Fit end covers.
Allow 24 hours for complete adhesion of scale before fitting datum clamps.
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2
START
point
START
Direction of scale
application
RTLA50-S
Splitter screw
Backing tape
End covers
The end cover kit A-9585-0035 is designed to be used with RTLA50-S scale to provide protection for
exposed scale ends.
NOTE:
End covers are optional and can be fitted before or after readhead installation.
1
Remove the backing tape from the adhesive tape on the back of the end cover.
Align markers on the edges of the end cover with the end
of the scale and place end cover over the scale.
NOTE:
There will be a gap* between the end
of the scale and the adhesive tape on
the end cover.
2
*gap
Datum clamp
The datum clamp (A-9585-0028) fixes the RTLA50-S scale rigidly to the substrate at the location chosen.
The metrology of the system may be compromised if the datum clamp is not used.
It can be positioned anywhere along the axis depending upon the customer’s requirements.
2
Place a small amount of adhesive (Loctite
®
435
™
)
in the cut-out on the datum clamp, ensuring none
of the adhesive wicks onto the scale surface.
Dispensing tips P-TL50-0209 are available.
1
Place the datum clamp with cut-out against the
scale at the chosen location.
Ensure the adhesive wicks along
the entire length of cut-out.
