Toshiba TOSVERT VF-AS3 Instruction Manual page 54

• To make the control circuit continuously operate even if the power circuit is shut off due to malfunction
or tripping, use an optional control power supply unit and supply power to the control circuit.
■ Wiring
• For power terminals, use ferrules with insulation sleeve terminal and crimp-style terminal with
insulation sleeve. Connect the terminals so that adjacent terminals do not touch each other.
• For the sizes of electric wires used in the power circuit, refer to the table in [10. 1].
• The length of each wire is assumed to be 30 m or less. If the wire length is over 30 m, the wire size
(diameter) must be increased.
• For grounding terminal, use wires of the size that is equivalent to or larger than those given in
2
table [10. 1] and always ground the inverter.
• Wire the grounding wire as close as possible to the inverter.
• To ground the inverter unit, connect it to an exclusive grounding terminal. Do not use screws of the
case, chassis, etc.
• Tighten the screws of the power terminal block and the control terminal block to the recommended
tightening torque shown in the table [2. 3. 3] and [2. 3. 5] respectively.
9
2. Installation and wiring
2-22
E6582062