SAFETY PRECAUTIONS B-65285EN/03
1.3.2 Warnings and Cautions Relating to a Pilot Run
- 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.
A loose screw, loose connection, or the like will cause a motor
malfunction or overheating, or a ground fault. Be extremely
careful with power supply lines, motor power lines, and DC link
connections through which a large amount of current passes,
because a loose screw (or poor contact in a connector or poor
connection between a connector terminal and a cable) may cause a
- Before turning on the power, ensure that the power magnetics
cabinet is securely grounded.
- 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.
- 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.
- 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
- 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.