SMRI2
5 - Mounting instructions
SMRI bearingless encoder has to be compulsorily
used with 2 mm pole pitch MRI magnetic rings; see
the order code: MRI/xxx-xx-
2
-xxx. Make sure the
mounting tolerances between the sensor and the
MRI ring indicated in Figure 2, Figure 3 and Figure 4
are always met. Avoid contact between the parts.
5.1 Mounting the sensor on MRI magnetic ring
Fix the sensor by means of
two M3 15 mm / 0.6”
min. long cylinder head screws
inserted in the
provided holes. M3 screws recommended
tightening torque: 1.1 Nm
.
Please always comply with the mounting tolerances
indicated in the section “5.2 Mounting tolerances”.
NOTE
With Reference “R” please pay
attention to the mounting side of the
magnetic ring: there is the incremental
track on one side, the reference track on the other
side. Mount the sensor and the magnetic ring
having the Reference label as shown in Figure 2.
Figure 2 - Mounting the sensor
When the sensor is installed on magnetic rings
having a 10 mm / 0.4” wide magnetic surface, line
up both the sensor and the ring on the central axis;
as previously stated, if the Reference track is
provided pay attention to the mounting direction of
the sensor and the ring. When magnetic rings
having a 5 mm / 0.2” wide magnetic surface are
used, line up the sensor and the ring as shown in
Figure 3; please consider that the incremental
sensor is located laterally in the sensing head. With
5 mm rings the mounting direction of the ring
makes no difference (but ascertain that the sensor is
properly aligned on the correct side!).
Figure 3 - Sensor – ring alignment
5.2 Mounting tolerances
Always comply with the mounting tolerances
indicated in the following table and in Figure 2,
Figure 3 and Figure 4.
The recommended distance
D is 0.5 mm.
Distance sensor / magnetic ring (D)
w/o Reference w/ Reference recommended
0.1 – 1.0 mm
0.1 – 0.7 mm
0.5 mm
Figure 4 - Mounting tolerances
WARNING
Prevent the sensor
1
and the magnetic
ring
2
from coming into contact.
MAN SMRI2 I_E 1.3.odt
11
www.lika.it
www.lika.biz
