
E%-65202EN/02
SAFETY PRECAUTIONS
m CAUTION
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FANUC motors are designed for use with machines. Do not use them for
any other purpose.
If a FANUC motor is used for an unintended purpose, it may cause an unexpected symptom or
trouble. If you want to use a motor for an unintended purpose, previously consult with FANUC.
Ensure that a base or frame on which a motor is mounted is strong
enough.
Motors are heavy. If a base or frame on which a motor is mounted is not strong enough, it is
impossible to achieve the required precision.
Be sure to connect motor cables correctly.
An incorrect connection of a cable cause abnormal heat generation, equipment malfunction, or
failure. Always use a cable with an appropriate current carrying capacity (or thickness). For how
to connect cables to motors, refer to their respective specification manuals.
Ensure that motors are cooled if they are those that require forcible
cooling.
If a motor that requires forcible cooling is not cooled normally, it may cause a failure or trouble.
For a fan-cooled motor, ensure that it is not clogged or blocked with dust and dirt. For a
liquid-cooled motor, ensure that the amount of the liquid is appropriate and that the liquid piping
is not clogged. For both types, perform regular cleaning and inspection.
When attaching a component having inertia, such as a pulley, to a motor,
ensure that any imbalance between the motor and component is
minimized.
If there is a large imbalance, the motor may vibrates abnormally, resulting in the motor being
broken.
Be sure to attach a key to a motor with a keyed shaft.
If a motor with a keyed shaft runs with no key attached, it may impair torque transmission or
cause imbalance, resulting in the motor being broken.
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