2.MECHANICAL DESIGN HANDLING, DESIGN, AND ASSEMBLY B-65382EN/02
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2.6.4 Absolute Linear Encoder Mounting Position
For LiS 300A1/4, LiS 600A1/4, and LiS 900A1/4
The positional relationship between the linear motor and the absolute
linear encoder is predetermined. The following positional
relationships and expressions must be satisfied at the same time.
N SN SN SN SN SN S
L
Power line
Coil slider
Slider mounting screw
nearest to the power line
Magnet plate
mounting screw
Absolute linear encode
S
Position of the head end face when
the encoder detects the origin
Mount a linear motor and linear encoder at the following position in
the figure above:
S = 30 × N (mm) N: Natural number or 0
Magnet end face on the magnetic
pole sensor 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)
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.