YASKAWA GA700 Series Technical Manual page 85

■
Ground Wiring
Follow the precautions to wire the ground for one drive or a series of drives.
WARNING! Crush 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 10mm
16 mm 2 (aluminum wire). The leakage current of the drive will be more than 3.5 mA in drive models;
• 2xxxB
• 2xxxC
• 4002B to 4371B
• 4002C to 4371C (with built-in EMC filter turned ON)
• 4389 to 4675
If you do not obey the standards and regulations, it can cause serious injury or death.
WARNING! Electrical Shock Hazard. Ground the neutral point on the power supply of drive models 2xxxB/C and 4xxxB/C 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.
Note:
• Only use the drive grounding wire to ground the drive. Do not share the ground wire with other devices such as welding machines or
large-current electrical equipment. Incorrect equipment grounding can cause drive or equipment malfunction from electrical
interference.
• To connect more than one drive to the same grounding circuit, follow the instructions in the instruction manual. Incorrect equipment
grounding can cause drive or equipment malfunction from electrical interference.
When you connect more than one drive, refer to
■
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.
■
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 2004A to 2415A and 4002A to 4675A do not have a built-in EMC filter.
WARNING! Fire Hazard. Do not connect a braking resistor to terminals +1 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.
2004 - 2082, 4002 - 4044
2110 - 2138, 4060 - 4168
YASKAWA SIEPC71061705H GA700 Series Technical Manual
Figure
Figure 3.16 Wiring More than One Drive
Model
3.16. Do not loop the grounding wire.
3.3 Main Circuit Wiring
2 (copper wire) or
Figure
Figure 3.17
Figure 3.18
3
85