
2.MECHANICAL DESIGN HANDLING, DESIGN, AND ASSEMBLY B-65382EN/02
- 134 -
2.6.3 Incremental Linear Encoder and Magnetic Pole Sensor
Mounting Positions
For LiS 300A1/4, LiS 600A1/4, and LiS 900A1/4
To use an incremental linear encoder, a magnetic pole sensor is
required. The positional relationships of these components are
predetermined. The following positional relationships and expressions
must be satisfied at the same time.
N SN SN SN SN SN S
P
L
Power line
Signal line
Magnetic pole
sensor
Coil slider
Slider mounting
screw nearest to the
power line
Magnet plate
mounting screw
Magnetic pole
sensor mounting
screw
Linear encoder
Position where the reference mark signal
(reference signal) is output
Mount a linear motor, magnetic pole sensor, and linear encoder at the
following position in the figure above where the linear encoder
outputs the reference mark signal (reference signal):
P = 30 × N + 10.4 (mm) N: Natural number
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 magnetic pole sensor and 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 magnetic pole sensor or 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.