Ground Wiring - YASKAWA D1000 Series Instruction Manual

3.6 Main Circuit Wiring

◆ Ground Wiring

Follow the precautions below when wiring the ground for one converter or a series of converters.
WARNING! Electrical Shock Hazard. Always use a ground wire that complies with technical standards on electrical equipment and
minimize the length of the ground wire. Improper equipment grounding may cause dangerous electrical potentials on equipment
chassis, which could result in death or serious injury.
WARNING! Electrical Shock Hazard. Be sure to ground the converter ground terminal (200 V class: ground to 100 Ω or less; 400 V
class: ground to 10 Ω or less). Improper equipment grounding could result in death or serious injury by contacting ungrounded electrical
equipment.
NOTICE: Do not share the ground wire with other devices such as welding machines or large-current electrical equipment. Improper
equipment grounding could result in converter or equipment malfunction due to electrical interference.
NOTICE: When using more than one converter, ground multiple converters according to instructions. Improper equipment grounding
could result in abnormal operation of converter or equipment.
NOTICE: If devices, such as office equipment, that is sensitive to noise are installed in the same location, separate the ground wires
and use independent grounds or noise filters to prevent noise from entering the devices through the ground wire. Otherwise, the office
equipment may fail.
Note: Connect the converters to power supply transformers on a 1:1 basis and use independent grounds. Otherwise the converters or the
devices may fail to operate.
Note: If other devices are installed in the same location, connect them while observing the grounding standards for each device.
Otherwise the converters or the devices may fail to operate.
Refer to Figure 3.27 when using a converter with multiple drives. Do not loop the ground wire.
Figure 3.27
D1000
Wiring the Main Circuit Terminal
■
WARNING! Electrical Shock Hazard. Shut off the power supply to the converter before wiring the main circuit terminals. Failure to
comply may result in death or serious injury.
Wire the main circuit terminals after the terminal board has been properly grounded.
■ Main Circuit Connection Diagram
Refer to Main Circuit Connection Diagram on page 49
converter.
64
Figure 3.27 Installation Examples for a Converter and Several Drives
YASKAWA ELECTRIC TOEP C710656 07A YASKAWA Power Regenerative Converter - D1000 Instruction Manual
when wiring terminals on the main power circuit of the