Reference mark and limit switch installation
Limit switch
actuator
Reference mark
actuator
Mix up a sachet of glue (A-9531- 0342) and apply a small amount to the underside of the reference mark
and limit switches. Position with the aid of the Orange shim as shown. Reference mark and limit switch
actuators can be mounted independently from each other, but within the limits specified by the relevant
installation drawing.
Ensure that the glue does not enter the reference mark actuator
adjustment mechanism.
Once the reference mark has been secured it must be phased with
the readhead. See ‘Reference mark set-up’ for details
Single limit switches
For single limit switch detection, limit switch actuator should be mounted with the dimple up.
Dual limit switches
Some versions of the RGH41 (options 05 and 06) are configured to detect dual limit switch actuators.
Scale
Dimple up triggers Q limit
switch sensor
Dimple down triggers
P limit switch sensor
End clamp
Q limit switch
sensor position
P limit switch
sensor position
End clamp
If in doubt, refer to the RGH41 data sheet to see if single or dual limit switch
capability has been specified on the readhead you have purchased.
RGH41 RGS40 installation guide
6
Orange shim
End clamps
A-9523-4015 is an end clamp kit designed to be used with RGS40 scale.
IMPORTANT:
End clamps should be used to ensure positional stability of the scale and reference
mark repeability.
NOTE:
End clamps can be mounted before or after readhead installation.
Ensure that excess glue is wiped away from scale as it may affect the readhead signal level.
15 mm
1
Remove the lacquer or polyester coating from
the last 15 mm of each end of the scale with a
knife and clean with one of the recommended
solvents (see ‘Storage and handling’).
3
The end clamp features a small region of
contact adhesive. This will temporarily hold
the end clamp in position while the glue cures.
Remove the backing tape from either side.
4
Immediately position end clamp
over the end of the scale.
Allow 24 hours at 20 °C
for full cure.
2
Mix up a sachet of glue
(A-9531-0342)
and apply a small amount to the
underside of the end clamp.