Adding Tapes With 5 Mm Pole Width (Bml-M0_-I4; Procedure - Balluff BML-M0 I A Série Notice D'utilisation

_ _ _ _
BML-M0 -I -A
Magnetic Tape – Incremental Magnetically Coded Position Measuring System
4
Installation (continued)
4.7 Adding tapes with 5 mm pole width
(BML-M0_-I4...)
Tapes can only be supplied with a maximum length of
48 m. If longer measuring distances are required, you can
add tapes with 5 mm pole width (BML-M0_-I4...).
The smaller the distance between the two tapes and more
precise the tape connection, the lower magnetic non-
linearity at the joint.
Cut both ends of the tape straight at the joint (Fig. 4-7 and
Fig. 4-8).
4.7.1

Procedure

1. Tape M1 is already bonded. Fasten a side stop at the
joint so the next tape M2 can be precisely aligned
(Fig. 4-7).
2. Cut off approximately 10 cm of tape M2 to use as an
aid tape to correctly position the loose tape.
3. Turn the aid tape around and place it on tape M1. The
aid tape will be "engaged" by the magnetic forces from
the opposite pole (Fig. 4-9).
To find the position with the maximum attraction, move
the aid tape by approx. 1 mm in both directions until
you find the area with the maximum attraction.
The aid tape must be fixed in the position using e.g.
Scotch tape.
Tip: To easily achieve a stable position (max. attraction),
place a sliding layer, e.g. paper, between M1 and the
aid tape to reduce friction. As soon as a stable position
has been found, carefully pull out the paper.
4. Slide the beginning of the second tape M2 under the
aid tape until it is near tape M1 and let it "engage"
(Fig. 4-9). Leave enough distance (d), e.g. 4–10 mm.
5. Slide the second tape M2 under the aid tape in both
directions until you find the area with the maximum
attraction. Fasten tape M2 in this stable position using
Scotch tape. Remove the aid tape (Fig. 4-10).
6. Mark tape M2 and the machine part at any position (a)
(Fig. 4-10).
Starting from this mark, in the direction of the joint
make two further marks (b and c) at a distance of 1
pole pair each (here 10 mm) just on the machine part.
www.balluff.com
-...
M1
N S
S N S N S
Fig. 4-7: Top view of tape
M1
S N S N S N S
Fig. 4-8: Side view
e.g. Scotch tape
B
~1 mm
M1
N S S N N S
S N S N S N N S S
Fig. 4-9: Tape M2 to be attached, underneath the aid tape, d =
4–10 mm
F
Remove aid tape
N S S N S
S N S N S N N S
~1 mm
Fig. 4-10: Make three markings a, b, and c
M2
N S N S
S N S
Side stop
M2
S N S N S N S
Aid tape
A
~1 mm
M2
N S N S
C
S N S N S N S
d
e.g. Scotch
tape
E
N S
N S a
D
S N S N S N N S
~1 mm
10 mm 10 mm
c a
b
english 13