YASKAWA CIMR-VU BA0001 Technical Manual page 62

3.6 Main Circuit Wiring
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 Figure 3.15 when using multiple drives. Do not loop the ground wire.
A – Correct
n Wiring the Main Circuit Terminal
WARNING! Electrical Shock Hazard. Shut off the power supply to the drive before wiring the main circuit terminals. Failure to comply may
result in death or serious injury.
Note: A cover placed over the DC Bus and braking circuit terminals prior to shipment helps prevent miswiring. Cut away covers as needed for
terminals with a needle-nose pliers.
A –Protective Cover to Prevent Miswiring
Note: The ground terminal screw on IP20/NEMA Type 1 holds the protective cover in place.
Main Circuit Connection Diagram
Refer to section 3.3 Main Circuit Connection Diagram
WARNING! Fire Hazard. The braking resistor connection terminals are B1 and B2. Do not connect braking resistors to any other terminals.
Improper wiring connections could cause the braking resistor to overheat and cause death or serious injury by fire. Failure to comply may
result in damage to the braking circuit or drive.
62
A A
Figure 3.15 Multiple Drive Wiring
A
on page
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
B
B – Incorrect
53 for drive main power circuit connections.