
2.MECHANICAL DESIGN HANDLING, DESIGN, AND ASSEMBLY B-65222EN/03
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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.
NOTE
With the FANUC Linear Motor series, an
incremental linear encoder that outputs the
reference mark signal (Z-phase signal) at one
position only is required. Specify this requirement
when ordering an incremental linear encoder. If an
incremental linear encoder has two positions where
the reference mark signal is output, a count miss
alarm may be issued when the second reference
mark signal is detected.