Instruction manual

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2. LINEAR SERVO MOTOR
2.3 Replacement
2.3.1 Replacement of primary side (coil) or secondary side (magnet)
After replacing the primary side (coil) or the secondary side (magnet), perform the magnetic pole detecting
operation again. When not performing the magnetic pole detecting operation unavoidably, mount the primary
side (coil) and secondary side (magnet) so that the mounting position gap is less than
0.1 mm, comparing
before and after the replacement. In this case, the thrust of the motor may be decreased 5%.
2.3.2 Replacement of linear encoder
After replacing the linear encoder, perform the magnetic pole detecting operation again. When not performing
the magnetic pole detecting operation unavoidably, mount the linear encoder so that the mounting position gap
is less than
0.1 mm, comparing before and after the replacement. When replacing the linear encoder, make
sure to set a home position by controller.
The following indicates the procedures to check the mounting position.
(1) Checking mounting position of linear encoder
1) Before replacing the linear encoder, check the encoder information using the MR Configurator with
the linear servo motor fixed at the specified position.
2) Replace the linear encoder so that the position gap should be
0.1 mm, comparing before and after
the replacement.
3) After replacing the linear encoder, check the encoder information using the MR Configurator again
with the linear servo motor fixed at the specified position.
4) Check that the value calculated from the difference of the encoder information (resolution unit) before
and after the replacement of the linear encoder is under
0.1mm.
(2) Reading encoder information with MR Configurator
1) Select the "MR-J3-B Linear" from the system setting of MR Configurator.
2) Check that the personal computer is connected with the servo amplifier and select "Diagnostics" and
then "Linear diagnostics".
The following window appears.
1)
3) Data 1 (1) of the encoder information is read.