Toshiba TOSVERT VF-AS1 Instruction Manual page 36

Prohibited
Preventing radio noise
To prevent electrical interference such as radio noise, separately bundle wires to the main circuit's power terminals
(R/L1, S/L2, T/L3) and wires to the motor terminals (U/T1, V/T2, W/T3).
Control and main power supply
The control power supply and the main circuit power supply for the VF-AS1 are the same. If a malfunction or trip
2
causes the main circuit to be shut off, control power will also be shut off.
If you want to keep the control circuit alive when the main circuit shuts off due to trouble or tripping, you can use an
optional power supply unit to supply power to the control circuit separately from the main circuit.
Wiring
・Because the space between the main circuit terminals is small use sleeved pressure terminals for the connections.
Connect the terminals so that adjacent terminals do not touch each other.
・For ground terminal G/E use wires of the size that is equivalent to or larger than those given in table below and
always ground the inverter (200V class: D type ground [former type 3 ground]; 400V class: C type ground [former
special type 3 ground]).
Use as large and short a ground wire as possible and wire it as close as possible to the inverter.
Voltage class
200V
400V
・Refer to the table in Section 10.1 for wire sizes.
・The length of the main circuit wire in Section 10.1 should be no longer than 30m. If the wire is longer than 30m, the
wire size (diameter) must be increased.
・Tighten the screws on the terminal board to specified torque.
Warning
・Do not attach devices with built-in capacitors (such as noise filters or surge absorber) to the output
(motor side) terminal.
This could cause a fire.
Applicable Motor
0.4~5.5kW
7.5kW
11~15kW
18.5~22kW
30~37kW
45kW
55~75kW
0.75~11kW
15kW
18.5kW
22~30kW
37~55kW
75~132kW
160~220kW
280kW
Recommended tightening torque for screws on
the terminal board
N·m
M4 1.2
M5 2.4
M6 4.0
M8 8.0
M10 16
M12 32
Grounding wire size
(mm 2 )
3.5
5.5
14
22
38
60
100
3.5
5.5
8
14
22
60
100
150
Ib·ins
11
21
35
71
142
283
B-2
E6581301