Fastening The Magnetic Tape; Ambient Conditions; Installation Options - Balluff BML-M0 Série Notice D'utilisation

BML-M0 _ -... / BML T _ _ -...
Magnetic Tape – Magnetic Encoder System
4
Installation (continued)
4.3

Fastening the magnetic tape

NOTICE
Improper installation
Improper installation can compromise the function of the
magnetic ring and result in damage.
► Keep magnetized parts away from the tape to rule
out the formation of defective areas that could result
in non-linearity or malfunction.
► Attach the tape to the mounting surface parallel to
the direction of travel and completely level. Wavy or
skewed tapes will affect the measuring accuracy.
► To prevent undefined non-linearity, never stretch or
compress the tape.
► Once glued in place, a tape should not be removed
(even partially). Strong non-linearity can be expected
from any point which has been lifted.
Note the following when fastening the tape:

Ambient conditions

– For optimum bonding conditions, we recommend an
ambient temperature of 0 to 40°C.
– Thoroughly remove any oil, grease, dust, etc. (use
acetone or similar) from the mounting surface of the
tape and allow to dry completely.
Tape alignment
– The arrow printed on the tape must point in the same
direction as the arrow on the part label of the sensor
head (see Fig. 4-1 and Fig. 4-2 on page 10).
– Tapes with a reference track have the first reference
point visually marked.
– The coding of the tape must match the coding of the
sensor head.
4.4

Installation options

Non-flush installation
For normal ambient conditions glue the tape down to a
level surface. Optionally the cover strip can be glued on for
protection (see Fig. 4-3, Pos. 1).
Flush installation
For harsh ambient conditions embed the tape fully in a
somewhat deeper channel so that it does not extend over
the surface. Optionally the cover strip can be glued on (see
Fig. 4-3, Pos. 2).
Flush installation with potting
Under extreme ambient conditions embed the tape
fully in a somewhat deeper channel and fill it with
non-magnetic material. The potting material can be
leveled by lightly sanding (see Fig. 4-3, Pos. 3).
Cover strip
Magnetic tape
Machine
Cover strip
Tape in a slot
Potting material
Tape in a slot
Fig. 4-3: Tape installation options
When installing in a channel:
– Provide a channel which is wider than the
tape.
– The tape is attached on one side.
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