Table 3.5 Cable Length Between Drive and Motor
Cable Length
50 m or less
100 m or less
Greater than 100 m
Carrier Frequency
15 kHz or less
5 kHz or less
2 kHz or less
Note:
When setting carrier frequency, calculate the cable length as the total distance of wiring to all connected
motors when running multiple motors from a single drive.
n
Ground Wiring
Follow the precautions to wire the ground for one drive or a series of drives.
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 drive 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 drive or equipment malfunction due to electrical
interference.
NOTICE: When using more than one drive, ground multiple drives according to instructions. Improper
equipment grounding could result in abnormal operation of drive or equipment.
Refer to
when using multiple drives. Do not loop the ground wire.
A
B
A – Correct
B – Incorrect
Figure 3.9 Multiple Drive Wiring
3.6 Main Circuit Wiring
YASKAWA ELECTRIC TOEP C710606 25D YASKAWA AC Drive J1000 Installation & Start-Up Manual
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Electrical Installation
