Electrical Connection - Siko MSA511 Benutzerinformation

• Fix cover strip (both ends should slightly over-
lap).
• Also fix cover strip's ends to avoid unintentional
peeling.
Fig. 2: Mounting the magnetic strip
Attention! Do not expose the magnetic strip to
magnetic fields. Any direct contact of the magnetic
strip with magnetic fields (e.g. adhesive magnets
or other permanent magnets) is to be avoided. The
same applies to the sensor during operation.
Mounting examples
Mounting with chamfered ends (fig. 3) is not re-
commended unless the strip is installed in a safe
and protected place without environmental influ-
ences. In less protected mounting locations the
strip may peel. There we recommend mounting
accord. to fig. 4 and fig. 5.
Mounting in a groove (fig. 6) best protects the
magnetic strip. The groove should be deep enough
to totally embed the magnetic strip (e.g. SIKO-
PSA-rail).
Fig. 3
Fig. 5
3.2 Sensor mounting
When mounting the magnetic sensor, ensure that
the arrow on the sensor heads in the same direc-
tion as the arrows on the magnetic strip (fig. 1).
The sensor's position relative to the magnetic strip
is exactly defined. The correct gap between sen-
sor and magnetic strip must be maintained over
the total travel distance, irrespective whether the
strip or sensor moves (fig. 7).
Within the defined limits (fig. 7), errors due to
deviation are less important than errors resulting
from strip and sensor tolerances.
The max. allowable distance between sensor
8 MSA511+MBA511
Fig. 4
Fig. 6
Datum 15.02.2010
and magnetic strip (without cover strip) is
2mm. When using a cover strip, the gap is re-
duced by the thickness of the cover strip in-
cluding its adhesive tape. The Sensor must not
touch the magnetic strip.
An accumulation of the different possible moun-
ting tolerances should be avoided.
<0.5°
Fig. 7: Mounting tolerances

4. Electrical connection

• Switch power off before any plug is inserted
or removed!!
• Wiring must only be carried out with power off.
• Provide standed wires with ferrules.
• Check all lines and connections before switching
on the equipment.
Interference and distortion
All connections are protected against the effects
of interference. The location should be selected
to ensure that no capacitive or inductive in-
terferences can affect the encoder or the con-
nection lines! Suitable wiring layout and choice
of cable can minimise the effects of interference
(e.g. interference caused by SMPS, motors, cyclic
controls and contactors).
Necessary measures:
• Only screened cable should be used. Screen should
be connected to earth at both ends. Cross section
of the lines = 0,25 mm
• Wiring to screen and to ground (0V) must be via
a good earth point having a large surface area
for minimum impedance.
• The unit should be positioned well away from
cables with interference; if necessary a protective
Art.Nr. 81105
<3°
.
2
Änd. Stand 48/10