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Warning : Do not test the insulation of the Driver Unit.
• The high voltage used in the test may destroy the internal circuits of Driver
Unit.
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Caution : In most cases, the Direct Drive Motor System cannot exhibit its full
performance unless the shipping set of the parameters is altered for
actual applications.
• Refer to “5. Tuning” and be sure to set the servo parameters to actual use
conditions.
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Caution : Allowable moment load and axial load depend on Motor size. Please
confirm that actual load conditions are in the limits of the Motor.
• Refer to “2.5. Motor Specifications” for the allowable moment load, axial load
and radial load.
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Caution : An excessive eccentric load or an excessive load may cause the
permanent deformation of the rotor or premature failure of the bearing
inside the Motor. When handling the Motor, please pay special
attention not to drop it and not to give a shock to it. Protect the Motor
from a collision with an obstacle.
• Excessive load to the Motor may damage the bearing of Motor and may
mechanically lock the Motor.
• The flatness of the Motor mounting surface shall be 0.02 mm or less.
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Caution : For an oscillating operation less than 45 [°], turn the Motor 90 [°] or
more at least once a day.
！
Caution : Do not give a direct impact to the Motor with a hammer or the like. A
direct impact to the outside of the Motor or the load fixed to the Motor
may deteriorate accuracy of the built-in position sensor.
！
Caution : When attaching a rotary machine component to the Motor such as a
bearing or a ball screw, be sure to align both centers within 0.01 mm.
Excessive eccentric load or excessive load to the Motor may cause the
premature failure of Motor’s bearing.
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Warning
：
Be sure not to activate the dynamic brake in the following conditions.
Otherwise the dynamic brake circuit may break and the Motor will
enter in a “free run” state, leading to possible injuries.
◊ Do not activate the dynamic brake in normal operations. Stop the Motor by a control
command, not by the dynamic brake. The dynamic brake is an auxiliary function to
stop the Motor immediately in an emergency. In the middle of operation, an alarm, a
warning or the “Emergency stop” input activates the dynamic brake.
• Warnings that initiate “Servo-off” state are “A3” (Software thermal), “C0”
(Position command/Feedback error), “C5” (Field bass error), “F5” (Program
error), and “F8” (Automatic tuning error).
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