
2.MECHANICAL DESIGN HANDLING, DESIGN, AND ASSEMBLY B-65222EN/03
- 102 -
- Example using the HEIDENHAIN 's absolute linear encoder LC191F or LC491F
N S N S N S N S N S N S
L
Power lead
Coil slider 300D/4, 600D/4
or 900D/4
Slider mounting
screw nearest to the
power lead
Magnet plate
mounting screw
S
Absolute linear encoder
LC191F, LC491F
Mount a linear motor and linear encoder at the following position in
the figure above:
Magnet end face on the
power lead side
L (mm) M: Natural number
N pole L=30×M+17.5±0.5 (mm)
S pole L=30×M+2.5±0.5 (mm)
Encoder model S (mm) M: Natural number
LC191F S=30×N-1.5
With mounting spur S=30×N-3.5
LC491F
Without mounting spur S=30
×N-20
CAUTION
1 Before mounting a linear encoder, check that the positive
direction of the linear motor matches the positive direction
of the linear encoder. If a positive direction mismatch
exists, the motor can become uncontrollable in the worst
case. For the method of checking, see Subsection 2.4.2,
"Linear Motor and Linear Encoder Directions".
2 If a linear encoder is mounted at an incorrect position, the
power factor can drop, and a soft thermal (OVC) alarm can
be issued. In addition, the motor can become
uncontrollable in the worst case. Before turning on the
power to the machine after machine assembly, recheck the
positional relationships.
NOTE
1 Note that the measurement length ML start point of
LC191F and LC491F differs from the origin of the encoder.
2 For details of the linear encoders LC191F and LC491F,
contact HEIDENHAIN, or their sales representative.