Safety Precautions - YASKAWA GA700 Technical Manual

6.1 Safety Precautions

6.1

Safety Precautions

Do not perform inspections or wiring while the drive is energized. De-energize all devices before
carrying out any wiring or repair operations. Voltage will remain within the capacitors inside the
drive even after the power has been switched off. The Charge LED is extinguished once the DC
bus voltage goes below 50 V DC. To prevent electric shock, always wait for at least the amount
of time indicated on the warning labels and confirm that all indicators are OFF. Then, remove the
front cover and terminal cover, measure the input power supply voltage and the DC bus voltage,
and make sure that the voltages have been lowered to safe levels.
Failure to comply may result in death or serious injury.
Do not operate equipment with covers removed. The diagrams in this section may include
drives without covers or safety shields to illustrate details. Be sure to reinstall covers or shields
before operating the drives and run the drives according to the instructions described in this
manual.
Failure to comply could result in death or serious injury.
Always ground the motor-side grounding terminal.
Improper equipment grounding could cause death or serious injury from contacting the motor case.
Do not immediately restart the drive or operate any peripheral devices after blowing a fuse or
tripping an Earth Leakage Circuit Breaker (ELCB). Wait for at least the time specified on the
warning label and check the wiring an peripheral device ratings to identify the cause when all
indicators are OFF. Contact Yaskawa before restarting the drive or the peripheral devices if the
cause cannot be identified.
Failure to comply could cause death or serious injury and damage to the drive.
Only authorized persons qualified in electrical work should perform installation, wiring,
maintenance, inspections, parts replacement, and repairs.
Failure to comply may cause electrical shock.
Do not perform work on the drive while wearing loose clothing or jewelry. Before servicing,
secure loose clothing and remove all metal objects such as watches or rings.
Failure to comply could cause death or serious injury.
Do not remove covers or touch circuit boards while the power is on.
Failure to comply could cause death or serious injury.
Tighten all terminal screws to the specified tightening torque.
Loose or overtightened connections could cause erroneous operation and damage to the terminal block or start a
fire and cause death or serious injury.
Do not use the main circuit power supply (Overcurrent Category III) at improper voltages. Before
applying power, make sure the drive rated voltage and the power supply voltage match.
Using the main circuit power supply at improper voltages may result in batteries bursting and igniting, which
could cause fire and injury.
Do not place flammable or combustible materials on top of the drive and do not mount the drive
to flammable or combustible materials. Attach the drive to metal or other noncombustible
material.
Failure to comply could cause death or serious injury.
264
DANGER
Electrical Shock Hazard
WARNING
Electrical Shock Hazard
Fire Hazard
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual