
SAFETY PRECAUTIONS (FANUC SERVO MOTOR AMPLIFIER series)
B–65235EN/02
18
2
WARNINGS AND CAUTIONS RELATING TO A PILOT RUN
WARNING
F Before turning on the power, check that the cables connected to the power
magnetics cabinet and amplifier, as well as the power lines and power
supply lines, are securely connected. Also, check that no lines are slack.
F Before turning on the power, ensure that the power magnetics cabinet is
securely grounded.
F Before turning on the power, check that the door of the power magnetics
cabinet and all other doors are closed.
Ensure that the door of the power magnetics cabinet containing the amplifier, and all other doors,
are securely closed. During operation, all doors must be closed and locked.
F Apply extreme caution if the door of the power magnetics cabinet or
another door must be opened.
Only a person trained in the maintenance of the corresponding machine or equipment should
open the door, and only after shutting off the power supply to the power magnetics cabinet (by
opening both the input circuit breaker of the power magnetics cabinet and the factory switch used
to supply power to the cabinet). If the machine must be operated with the door open to enable
adjustment or for some other purpose, the operator must keep his or her hands and tools well
away from any dangerous voltages. Such work must be done only by a person trained in the
maintenance of the machine or equipment.
F When operating the machine for the first time, check that the machine
operates as instructed.
To check whether the machine operates as instructed, first specify a small value for the motor,
then increase the value gradually. If the motor operates abnormally, perform an emergency stop
immediately.
F After turning on the power, check the operation of the emergency stop
circuit.
Press the emergency stop button to check that the motor stops immediately, and that the power
being supplied to the amplifier is shut off by the magnetic contactor.
F Before opening a door or protective cover of a machine to enable
adjustment of the machine, first place the machine in the emergency stop
state and check that the motor has stopped.