Installing The Sensor; Distances, Tolerances - Balluff BML-S1A Serie Betriebsanleitung

BML-S1A_-Q/A_ _ _-M_ _ _-_0-S184/KA_ _
Linear Position Encoder
4

Installing the Sensor

Important installation notes:
The permissible distance and
angle tolerances as per Figs. 4-2,
4-3 and 4-4 must be strictly
observed.
The sensing head may not come
in contact with the tape at any
point along the travel. Contact
must still be avoided if the
stainless steel cover (optional) is
used.
The magnetic tape must not be
subjected to strong external
magnetic fields. Direct contact
with holding solenoids or other
permanent magnets must be
avoided.
The displacement measurement
system must be installed in
accordance with the specified
enclosure rating.
4.1

Distances, tolerances

The following distances and
tolerance must be observed when
installing the sensing head and
tape:
– The distance (air gap) between
sensing head and tape as per
Fig. 4-2
– The horizontal offset between
sensing head and tape as per
Fig. 4-3
– The angle tolerances as per
Fig. 4-4. Any tilt along the longitu-
dinal axis of the sensing head
must still maintain the nominal
distance to the tape in the center
of the head. The two incremental
sensors are located there on the
underside.
Insulated graduated strips can be
fitted only to the BML-S1A1
Fig. 4-1: Dimensional drawing
Stainless
Magnetic
steel cover
tape
strip
Fig. 4-2: Permissible air gap between
sensor head and tape
Fig. 4-4: Permissible angle tolerances
red LED
(dig. BML only)
BML without BML with single,
reference point or fixed-periodic or
with pole-periodic distance coded
reference point reference point
Fig. 4-3: Permissible horizontal
tolerance to right or left
Magnetic
tape
english
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