Balluff BTL7 Series User Manual page 36

BTL7-A/C/E/G501-M _ _ _ _ -P-S32/S115/KA _ _
Magnetostrictive Linear Position Sensor – Profile Style
4
Installation and connection (continued)
4.3 Floating magnets
The following must be observed when installing the
magnet:
– To ensure the accuracy of the position measuring
system, the magnet is attached to the moving member
of the machine using non-magnetizable screws
(stainless steel, brass, aluminum).
– The moving member must guide the magnet on a track
parallel to the BTL.
– Ensure that the distance A between parts made of
magnetizable material and the magnet is at least
10 mm (see Fig. 4-4 to Fig. 4-8).
– Maintain the following values for distance B between
the magnet and BTL and for center offset C (see
Fig. 4-4 to Fig. 4-8):
Type of magnet
BTL5-P-3800-2
BTL5-P-5500-2
BTL5-P-4500-1
BTL6-A-3800-2
BTL6-A-3801-2
The selected distance must stay constant over the entire measuring length.
2)
For optimum measurement results, a distance B of 6 to 8 mm is
1)
recommended.
Tab. 4-2: Distance and offset for floating magnets
A A
Fig. 4-4: Dimensions and distances with BTL5-P-3800-2 magnet
A A
Fig. 4-5: Dimensions and distances with BTL5-P-5500-2 magnet
10 english
Distance B Offset C
1)
0.1...4 mm ± 2 mm
5...15 mm ± 15 mm
0.1...2 mm ± 2 mm
4...8 mm ± 5 mm
2)
4...8 mm ± 5 mm
2)
C
C
A A
Fig. 4-6: Dimensions and distances with BTL6-A-3800-2 magnet
A A
Fig. 4-7: Dimensions and distances with BTL6-A-3801-2 magnet
A
A
Plug with
LED
4
Fig. 4-8: Dimensions and distances with BTL5 -P-4500-1
electromagnet (24 V/100 mA)
The measuring range is offset by 4 mm towards
the BTL plug (see Fig. 4-8).
C
C
C