Main Circuit Terminal Block Wiring; Wire Selection - YASKAWA GA800 Series Installation & Primary Operation

7 Electrical Installation
A - DC bus terminal
B - Connect to the drive ground
terminal.
C - Ground the motor case.
Note:
The location of terminals are different for different drive models.
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Main Circuit Terminal Block Wiring

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Wire Selection

Use this section to select the correct wires for main circuit wiring.
Wire Selection Precautions
WARNING
Electrical Shock Hazard. Make sure that the protective ground wire conforms to 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 2 (copper wire) or 16 mm
serious injury or death. 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), and 4414 to 4720.
Think about line voltage drop before selecting wire gauges. Select wire gauges that drop the voltage by 2% or less of
the rated voltage. Increase the wire gauge and the cable length when the risk of voltage drops increases. Calculate line
voltage drop with this formula:
Line voltage drop (V) =
Precautions during Wiring
• Use terminals B1 and - to connect braking units to drives that have built-in braking transistors (models 2004 to
2138 and 4002 to 4168). Use terminals +3 and - to connect braking units to drives that do not have built-in braking
transistors.
• Refer to "Yaskawa AC Drive Option Braking Unit, Braking Resistor Unit Instruction Manual (TOBPC72060001)"
for information about wire gauges and tightening torques to connect braking resistor units or braking units.
30
Figure 7.2 Wiring the Main Circuit and Motor
2 (aluminum wire). If you do not obey the standards and regulations, it can cause
× wire resistance (Ω/km) × wiring distance (m) × motor rated current (A) × 10
D - Three-Phase Motor
E - Use R, S, T for input power supply.
F - Input Protection (Fuses or Circuit
Breakers)
YASKAWA TOEPC71061737B GA800 Drive Installation & Primary Operation
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