
B–65235EN/02
SAFETY PRECAUTIONS (FANUC AC SERVO MOTOR series)
10
NOTE
F Use a motor under an appropriate environmental condition.
Using a motor in an adverse environment may cause a failure or trouble in it. Refer to their
respective specification manuals for details of the operating and environmental conditions for
motors.
F Do not apply a commercial power source voltage directly to a motor.
Applying a commercial power source voltage directly to a motor may result in its windings being
burned. Be sure to use a specified amplifier for supplying voltage to the motor.
F For a motor with a terminal box, make a conduit hole for the terminal box
in a specified position.
When making a conduit hole, be careful not to break or damage unspecified portions. Refer to
an applicable specification manual.
F Before using a motor, measure its winding and insulation resistances, and
make sure they are normal.
Especially for a motor that has been stored for a prolonged period of time, conduct these checks.
A motor may deteriorate depending on the condition under which it is stored or the time during
which it is stored. For the winding resistances of motors, refer to their respective specification
manuals, or ask FANUC. For insulation resistances, see the following table.
F To use a motor as long as possible, perform periodic maintenance and
inspection for it, and check its winding and insulation resistances.
Note that extremely severe inspections (such as dielectric strength tests) of a motor may damage
its windings. For the winding resistances of motors, refer to their respective specification
manuals, or ask FANUC. For insulation resistances, see the following table.