YASKAWA CR700, Technical Manual

Page: 91 / 886

Mechanical
&
Electrical
Installation
2
2.12 Main Circuit Wiring
YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual 91
WARNING! Electrical Shock Hazard. Make sure that the protective ground wire complies with technical standards and local
safety regulations. The IEC/EN 61800-5-1:2007 standard specifies that you must wire the power supply to automatically de-
energize when the protective ground wire disconnects. You can also connect a protective ground wire that has a minimum
cross-sectional area of 10 mm
2
(copper wire) or 16 mm
2
(aluminum wire). If you do not obey the standards and regulations, it
can cause serious injury or death. The leakage current of the drive will be more than 3.5 mA in drive models 2xxxB, 4xxxB, and
4317A to 4605A.
WARNING! Electrical Shock Hazard. Ground the neutral point on the power supply of drive models 2xxxB and 4xxxB to comply
with the EMC Directive before you turn on the EMC filter. If you turn ON the EMC filter, but you do not ground the neutral point, it
can cause serious injury or death.
WARNING! Electrical Shock Hazard. Use a ground wire that complies with technical standards on electrical equipment and use
the minimum length of ground wire. Incorrect equipment grounding can cause serious injury or death from dangerous electrical
potentials on the equipment chassis.
WARNING! Electrical Shock Hazard.
Correctly ground the ground terminals. Obey federal and local electrical wiring codes for correct grounding methods. The
maximum grounding resistance is
• 200 V class: ground to 100 Ω or less
• 400 V class: ground to 10 Ω or less
If you touch electrical equipment that is not grounded, it can cause serious injury or death.
NOTICE: When you install more than one drive connected to the same ground circuit, obey the grounding instructions. Incorrect
equipment grounding can cause drive or equipment malfunction from electrical interference.
NOTICE: Use conduit or metal cable tray dividers to isolate motor wires U/T1, V/T2, and W/T3 from all other wires to decrease
the risk of problems from electrical interference. If motor wires are adjacent to other wires, it can cause incorrect operation of the
drive and equipment.
When you connect more than one drive, refer to Figure 2.86 . Do not loop the grounding wire.
Figure 2.86 Wiring More than One Drive
■
Wiring the Main Circuit Terminal Block
WARNING!
Electrical Shock Hazard. Before you wire the main circuit terminals, make sure that MCCB and MC are OFF. If you
touch electrical equipment when MCCB and MC are ON, it can cause serious injury or death.
Wire the main circuit terminals after the terminal board has been properly grounded.
■
Main Circuit Configuration
The figures in this section show the different schematics of the drive main circuit. The connections change when
the drive capacity changes. The DC power supply for the main circuit also supplies power to the control circuit.
Note:
Drive models 2003A to 2415A and 4002A to 4605A do not have a built-in EMC filter circuit.
WARNING!
Fire Hazard. Do not connect a braking resistor to ter1 or -. Use terminals B1 and B2 for the braking resistor
connections. If you connect a braking resistor to the incorrect terminals, it can cause damage to the drive and braking circuit and
serious injury or death.
NOTICE:
Do not use the negative DC bus terminal “-” as a ground terminal. This terminal is at high DC voltage potential.
Incorrect wiring connections can cause damage to the drive.
Model Figure
2003 - 2075, 4002 - 4039
Figure 2.87
2088 - 2115, 4045 - 4150 Figure 2.88
2145 - 2283, 4180 - 4216 Figure 2.89
2346 - 2415, 4260 - 4605
Figure 2.90