3.8 Main Circuit Wiring
YASKAWA ELECTRIC
TOEP C710656 10B YASKAWA Power Regenerative Unit - R1000 Instruction Manual
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Ground Wiring
Follow the precautions below when wiring the ground for one regenerative unit or a series of regenerative units.
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 regenerative unit 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 regenerative unit or equipment malfunction due to electrical interference.
NOTICE:
When using more than one regenerative unit, ground multiple regenerative units according to instructions. Improper
equipment grounding could result in abnormal operation of regenerative unit 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: 1.
Connect the regenerative units to power supply transformers on a 1:1 basis and use independent grounds. Otherwise the regenerative
units or the devices may fail to operate.
2.
If other devices are installed in the same location, connect them while observing the grounding standards for each device. Otherwise
the regenerative units or the devices may fail to operate.
Do not loop the ground wire of the regenerative unit and the drive.
■
Wiring the Main Circuit Terminal
WARNING!
Electrical Shock Hazard. Shut off the power supply to the regenerative unit 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
Main Circuit Connection Diagram on page 36
when wiring terminals on the main power circuit of the
regenerative unit.
TOEP_C710656_10B_1_0.book 49 ページ ２０１５年１月８日 木曜日 午後８時５５分
