E6581386
B-2
2
Caution
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-PS1 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 use an
optional control power supply backup unit (CPS002Z).
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) [Note]
Grounding wire size
(mm
2
) [Note]
0.4~2.2 kW 14 2.5
3.7kW 12 4
5.5 kW 10 6
7.5 kW 10 10
11, 15 kW 10 16
18.5, 22 kW 8 16
30 kW 6 25
37, 45 kW 6 35
55 kW 1/0 70
75 kW 1/0 95
200V
90 kW 1/0 120
0.75~3.7kW 14 2.5
5.5 kW 12 2.5
7.5 kW 12 4
11 kW 10 6
15~18.5 kW 10 10
22 kW 10 8
30 kW 10 16
37, 45 kW 8 16
55 kW 6 25
75 kW 6 35
90 kW 2 70
110 kW 2 95
132 kW 1 95
160 kW 1 120
220~250 kW 2/0 150
280~315 kW 3/0 120×2
400 kW 4/0 150×2
500 kW 250MCM 150×2
400V
600 kW 350MCM 185×2
Note1: The recommended cable size is that of the cable (e.g. 600V class, HIV cable) with continuous maximum
permissible temperature of 75°C. The ambient temperature is assumed to be 50°C or below for 200V-45kW
or less models and 400V-75kW or less models, or 45°C for 200V-55kW and above models and 400V-90kW
and above models. (The interconnect cable length is assumed to be 30m or less.)
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