Safety Precautions - YASKAWA GA700 Technical Manual

2.1 Safety Precautions

2.1

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.
Ensure that the neutral point on the power supply of this product (model number 2xxxB/C,
4xxxA/B/C) is grounded for compliance with the EMC Directive before EMC filter is switched ON
or if there is high resistance grounding.
Failure to comply could cause death or serious injury.
If the built-in EMC filter is turned on, the leakage current of the drive will exceed 3.5 mA. As
written in the IEC/EN 61800-5-1 standard, the power supply should be wired so that it
automatically turns off in the event the protective ground wire is disconnected, or else use a
protective ground wire with a cross sectional area of at least 10 mm
(aluminum wire).
Failure to meet these standards may result in injury or death.
Always use appropriate equipment for Earth Leakage Circuit Breaker (ELCB). The drive can
cause a residual current with a DC component in the protective earthing conductor. Always use
a type B ELCB where a residual current operated protective or monitoring device is used for
protection in case of direct or indirect contact according to IEC/EN 60755.
Failure to comply could cause death or serious injury.
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 the circuit boards while the power is on.
Failure to comply could cause death or serious injury.
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 attempt to modify or alter the drive or drive circuitry in any way not explained in this
manual.
Failure to comply could cause death or serious injury and will void warranty. Yaskawa is not responsible for any
modification of the product made by the user. Do not modify this product.
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.
26
DANGER
Electrical Shock Hazard
WARNING
Electrical Shock Hazard
Fire Hazard
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
2 (copper wire) or 16 mm 2