Wiring The Main Circuits - YASKAWA VS mini J7 Series Instruction Manual

Wiring the Main Circuits

R S T
MCCB or
Leakage
Breaker
• Main Circuit Input Power Supply
Always connect the power supply line to input terminals R/L1, S/L2, and T/L3 (R/L1, S/
L2 for single-phase Inverters). Never connect them to terminals U/T1, V/T2, W/T3, B1,
B2, −, +1, or +2. The Inverter may be damaged if the wrong terminals are connected.
For single-phase Inverters, always use terminals R/L1 and S/L2. Never connect
NOTE
terminal T/L3.
• Grounding (Use ground terminal
Always ground the ground terminal
Never ground the VS mini to the same ground as welding machines, motors, or other elec-
trical equipment.
When several VS mini Inverters are used side by side, ground each as shown in examples.
Do not loop the ground wires.
.)
according to local grounding codes.
Good
Good
[Example of 3-phase,
200 V Class, 1.5 kW Inverters]
Ground
Poor
4. Wiring
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