Toshiba TOSVERT VF-AS3, Instruction Manual

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E6582062 
2. Installation and wiring
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For details of the peripheral devices, refer to [Chapter 10].
• An noise filter is built in all the types as standard.
• A DC reactor is built in as standard or attached (frame size A7, A8).
Braking resistor
• To VFAS3-2004P to 2370P, VFAS3-4004PC to 4750PC, and VFAS3-4160KPC, connect only the
braking resistor (optional) because a dynamic braking circuit is built in them as standard.
• When a braking resistor (optional) is installed for VFAS3-4900PC to 4132KPC and VFAS3-
4200KPC to 4280KPC, a braking unit (optional) is also required.
For details, refer to [10. 3. 2].
DC input
• To input DC power, connect the inverter between terminals [PA/+] and [PC/-].
• When VFAS3-2110P to VFAS3-2550P or VFAS3-4220PC to VFAS3-4280KPC are used with a DC
power supply, a circuit to suppress an inrush current should be required.
• When VFAS3-4160KPC to 4280KPC are used with a DC power supply, three-phase power input
for cooling fan driving should be prepared separately.
For details, refer to application manual "DC power supply connect to inverter" (E6582156).
■ Connection procedure of power circuit wiring
The following is the connection procedure of the power connection, with frame size A1 as an exam-
ple.
Connect other sizes in the same way.
1 Remove the front cover.
For how to remove, refer to [2. 2. 1].
2 Loosen the screws of the grounding terminal for inverter case. Mount the grounding wire to the
screws of grounding terminal. Switch the grounding capacitor when needed. For details of how
to switch, refer to [2. 3. 4].
3 Loosen the screws of the terminals [U/T1], [V/T2], and [W/T3] and a terminal [PE] of the power
terminal block.
The terminal [PE] exists only in frame size A4 to A6.
Loosen screws (x4)
Cable clamp