Wiring Connection - Toshiba TOSVERT VF-A3 Instruction Manual

1.2 Wiring connections
You can operate your VF-A3 inverter with its standard functions by connecting the unit to a power
supply and a drive motor. See Figures 1.2 and 1.3 and perform the connection work following the
procedure specified below.
1) Open the VF-A3'a front cover.
2) Connect an input power supply (power lines from a distribution panel) to Control power supply
terminals as well as U/R, L2/S, and L3rr on the left side of the inverter's main circuit terminal
block.
3) Connect the inverter's motor drive terminals T1/U, T2N, and T31W to your motor's U, V, and W
terminals.
4) Connect the inverter's ElG terminal, located to the left of the main circuit terminal block, to your
system's ground wire.
5) After completing the installation and wiring connections, remove the dust prevention seal that
is pasted on the upper" part of the unit (for models of 200V, 3.7kW and smaller).
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Figure 1.2 How to open the front cover
• Mount the cover to the original place. You will find the rating nameplate on the right side of the
unit.
• Before you begin connecting wires, be sure to turn the distribution panel's main switch OFF.
Before you start wiring, ensure that the inverter's "CHARGE" lamp in no longer lit.