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Main circuit terminal specifications
2.2.3
Cables and wiring length
(1) Applied wire size
Select the recommended cable size to ensure that a voltage drop will be 2% max.
If the wiring distance is long between the inverter and motor, a main circuit cable voltage drop will cause the motor torque to
decrease especially at the output of a low frequency.
The following table indicates a selection example for the wiring length of 20m.
Three-phase 200V class (when input power supply is 220V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-E720-0.1K to 0.75K
FR-E720-1.5K, 2.2K
FR-E720-3.7K
FR-E720-5.5K
FR-E720-7.5K
FR-E720-11K
FR-E720-15K
M6(M5)
Three-phase 400V class (when input power supply is 440V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-E740-0.4K to 3.7K
FR-E740-5.5K
FR-E740-7.5K
FR-E740-11K
FR-E740-15K
Single-phase 200V class (when input power supply is 220V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-E720S-0.1K to 0.4K
FR-E720S-0.75K
FR-E720S-1.5K
FR-E720S-2.2K
Single-phase 100V class (when input power supply is 100V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-E710W-0.1K to 0.4K
FR-E710W-0.75K
18
Crimping
Terminal
Tightening
Torque
R/L1
N·m
∗4
S/L2
U, V, W
T/L3
M3.5
1.2
2-3.5
2-3.5
M4
1.5
2-4
M4
1.5
5.5-4
5.5-4
M5
2.5
5.5-5
5.5-5
M5
2.5
14-5
M5
2.5
14-5
4.4
22-6
Crimping
Tightening
Terminal
Torque
R/L1
N·m
∗4
S/L2
U, V, W
T/L3
M4
1.5
2-4
M4
1.5
5.5-4
M4
1.5
5.5-4
5.5-4
M4
1.5
5.5-4
5.5-4
M5
2.5
8-5
Crimping
Tightening
Terminal
Torque
N·m
R/L1
∗4
U, V, W
S/L2
M3.5
1.2
2-3.5
2-3.5
M4
1.5
2-4
M4
1.5
2-4
M4
1.5
5.5-4
Crimping
Terminal
Tightening
Torque
N·m
R/L1
∗4
U, V, W
S/L2
M3.5
1.2
2-3.5
2-3.5
M4
1.5
2-4
HIV Cables, etc. (mm
R/L1
Earth
S/L2
U, V, W
(ground)
T/L3
cable
2
2
2-4
2
2
3.5
3.5
3.5
5.5
5.5
5.5
8-5
14
8
5.5
14-5
14
14
22-6
22
22
HIV Cables, etc. (mm
R/L1
Earth
S/L2
U, V, W
(ground)
T/L3
cable
2-4
2
2
2-4
3.5
2
3.5
3.5
5.5
5.5
8-5
8
8
HIV Cables, etc. (mm
Earth
R/L1
U, V, W
(ground)
S/L2
cable
2
2
2-4
2
2
2-4
2
2
2-4
3.5
2
HIV Cables, etc. (mm
Earth
R/L1
U, V, W
(ground)
S/L2
cable
2
2
2-4
2
2
Cable Size
2
AWG
)
∗2
PVC Cables, etc. (mm
∗1
R/L1
R/L1
S/L2
U, V, W
S/L2
T/L3
T/L3
2
14
14
2.5
2
14
14
2.5
12
12
4
10
10
6
6
8
16
14
6
6
16
14
4
4
25
Cable Size
2
AWG
)
∗2
PVC Cables, etc. (mm
∗1
R/L1
R/L1
S/L2
U, V, W
S/L2
T/L3
T/L3
2
14
14
2.5
3.5
12
14
4
3.5
12
12
4
8
10
10
6
8
8
8
10
Cable Size
2
AWG
)
∗2
PVC Cables, etc. (mm
∗1
R/L1
R/L1
U, V, W
S/L2
S/L2
2
14
14
2.5
2
14
14
2.5
2
14
14
2.5
2
12
14
4
Cable Size
2
AWG
)
∗2
PVC Cables, etc. (mm
∗1
R/L1
R/L1
U, V, W
S/L2
S/L2
2
14
14
2.5
2
14
14
2.5
2
)
∗3
Earth
U, V, W
(ground)
cable
2.5
2.5
2.5
2.5
4
4
6
6
10
6
16
16
25
16
2
)
∗3
Earth
U, V, W
(ground)
cable
2.5
2.5
2.5
4
4
4
6
10
10
10
2
)
∗3
Earth
U, V, W
(ground)
cable
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2
)
∗3
Earth
U, V, W
(ground)
cable
2.5
2.5
2.5
2.5
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