
SAFETY PRECAUTIONS (FANUC SERVO MOTOR AMPLIFIER series)
B–65235EN/02
19
CAUTION
F Note whether an alarm status relative to the amplifier is displayed at
power–up or during operation.
If an alarm is displayed, take appropriate action as explained in the maintenance manual. If the
work to be done requires that the door of the power magnetics cabinet be left open, the work must
be carried out by a person trained in the maintenance of the machine or equipment. Note that
if some alarms are forcibly reset to enable operation to continue, the amplifier may be damaged.
Take appropriate action according to the contents of the alarm.
F Before operating the motor for the first time, mount and adjust the position
and speed detectors.
Following the instructions given in the maintenance manual, adjust the position and speed
detectors for the spindle so that an appropriate waveform is obtained. If the detectors are not
properly adjusted, the motor may not rotate normally or the spindle may fail to stop as desired.
F If the motor makes any abnormal noise or vibration while operating, stop
it immediately.
Note that if operation is continued in spite of there being some abnormal noise or vibration, the
amplifier may be damaged. Take appropriate corrective action, then resume operation.
F Observe the ambient temperature and output rating requirements.
The continuous output rating or continuous operation period of some amplifiers may fall as the
ambient temperature increases. If the amplifier is used continuously with an excessive load
applied, the amplifier may be damaged.