11. Troubleshooting
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(4) The start time was long, or became longer than before.
Investigation items
Investigation results
Remedy
The friction torque has increased.
Correct the machine side.
1 Check whether the
friction torque has
increased.
No particular problem.
Investigate item 2, and carry out the
appropriate measures.
The motor does not rotate smoothly. Replace the spindle motor.
2 Rotate the motor by
hand and check
whether the bearing is
normal.
The motor rotates smoothly.
Investigate item 3, and carry out the
appropriate measures.
The signal is being input.
Set so it is not input.
3 Check whether a
torque limit signal is
being input.
The signal is not being input.
Replace the unit.
(5) The motor stops during cutting.
Investigation items
Investigation results
Remedy
The load meter jumps above 120%
during cutting.
Decrease the load.
1 Check the load
amount during cutting.
No particular problem.
Investigate item 2, and carry out the
appropriate measures.
2 Investigate as in item
(4) above, and carry
out the appropriate
measures.
