Toshiba Tosvert VF-AS1 - Manual (Page 42)

E6581301
B-2
2
Warning
Prohibited
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.
■ 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
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 control power supply backup unit (CPS002Z) 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.
(stripped wires may be connected directly for 200V/18.5kW to 200V/45kW models and 400V/22kW to 400V/75kW
models). 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.
Use as large and short a ground wire as possible and wire it as close as possible to the inverter.
Voltage class Applicable Motor
Grounding wire size
AWG (mm 2 )
0.4~4.0kW 12 (3.5)
5.5 kW 10 (5.5)
7.5 kW 8 (8)
11~15 kW 6 (14)
18.5 22 kW 4 (22)
30 kW 2 (38)
37, 45 kW 1/0 (60)
55 kW 4/0 (100)
200V
75 kW 300MCM (150)
0.75~7.5 kW 12 (3.5)
11 kW 10 (5.5)
15~22 kW 8 (8)
30 kW 6 (14)
37 kW 4 (22)
45, 55 kW 2 (38)
75 kW, 90kW 1/0 (60)
110~132 kW 4/0 (100)
160 kW 300MCM (150)
200, 220 kW 400MCM (200)
280 kW 300MCM (150) [Note]
400V
355~500 kW
Note1: The recommended cable size is that of the cable (e.g. 600V class,HIV cable) with continuous maximum
permissible temperature of 75°C. Ambient temperature is 50°C or less and the wiring distance is 30m or less.
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.
Recommended tightening torque for screws on
the terminal board
N·m Ib·ins
M3 0.60 5.31
M4 1.40 12.39
M5 3.00 25.55
M6 5.40 47.80
M8 12.00 106.21
M10 24.00 212.42
M12 41.00 360.00