7 Electrical Installation
YASKAWA TOEPC7106170VA GA800 600 V Drive Installation & Primary Operation 23
Note:
The location of terminals are different for different drive models.
A - DC bus terminal
B - Connect to the drive ground terminal.
C - Ground the motor case.
D - Three-Phase Motor
E - Use R, S, T for input power supply.
F - Input Protection (Fuses or Circuit Breakers)
Figure 7.2 Wiring the Main Circuit and Motor
◆ Main Circuit Terminal Block Wiring
■ 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 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 models 5382 to 5472.
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) = × wire resistance (Ω/km) × wiring distance (m) × motor rated current (A) × 10
-3
.
Precautions during Wiring
• 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.
• Use terminals +1 and - to connect a regenerative converter or regenerative unit.
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