Mitsubishi Electric 700 Series Installation Manualline page 12

3.2.2 Cables and wiring length
(1) Cable sizes etc., of the main control circuit terminals and earth (ground) terminals
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 (65.61feet).
Three-phase 200V class (when input power supply is 220V)
Applicable Inverter
Type
FR-E720-008(SC) to 050(SC)
FR-E720-080(SC), 110(SC)
FR-E720-175(SC)
FR-E720-240(SC)
FR-E720-330(SC)
FR-E720-470(SC)
FR-E720-600(SC)
Three-phase 400V class (when input power supply is 440V)
Applicable Inverter
Model
FR-E740-016(SC) to 095(SC)
FR-E740-120(SC)
FR-E740-170(SC)
FR-E740-230(SC)
FR-E740-300(SC)
Single-phase 200V class (when input power supply is 220V)
Applicable Inverter
Type
FR-E720S-008 to 030
FR-E720S-050
FR-E720S-080
FR-E720S-110
Single-phase 100V class (when input power supply is 100V)
Applicable Inverter
Type
FR-E710W-008 to 030
FR-E710W-050
Crimping
Terminal
Terminal Tightening
Screw Torque
R/L1
Size N·m
∗4
S/L2 U, V, W
T/L3
M3.5 1.2 2-3.5
M4 1.5 2-4
M4 1.5 5.5-4
M5 2.5 5.5-5
M5 2.5 14-5
M5 2.5 14-5
M6(M5) 4.4 22-6
Crimping
Terminal
Terminal Tightening
Screw Torque
R/L1
Size 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
M4 1.5 5.5-4
M5 2.5 8-5
Crimping
Terminal Tightening
Terminal
Screw Torque
Size N·m
∗4
R/L1
U, V, W
S/L2
M3.5 1.2 2-3.5
M4 1.5 2-4
M4 1.5 2-4
M4 1.5 5.5-4
Crimping
Terminal Tightening
Terminal
Screw Torque
Size N·m
∗4 R/L1
U, V, W
S/L2
M3.5 1.2 2-3.5
M4 1.5 5.5-4
Main circuit terminal specifications
HIV Cables, etc. (mm
∗1
R/L1
Earthing
S/L2 U, V, W
cable
T/L3
2-3.5 2 2 2
2-4 2 2 2
5.5-4 3.5 3.5 3.5
5.5-5 5.5 5.5 5.5
8-5 14 8 5.5
14-5 14 14 14
22-6 22 22 14
HIV Cables, etc. (mm
∗1
R/L1
Earthing
S/L2 U, V, W
cable
T/L3
2-4 2 2 2
2-4 3.5 2 3.5
5.5-4 3.5 3.5 3.5
5.5-4 5.5 5.5 8
8-5 8 8 8
HIV Cables, etc. (mm
∗1
R/L1 Earthing
U, V, W
S/L2 cable
2-3.5 2 2 2
2-4 2 2 2
2-4 2 2 2
2-4 3.5 2 2
HIV Cables, etc. (mm
∗1
R/L1 Earthing
U, V, W
S/L2 cable
2-3.5 2 2 2
2-4 3.5 2 2
Cable Size
2
) PVC Cables, etc. (mm
AWG
∗2
R/L1 R/L1
S/L2 U, V, W S/L2 U, V, W
T/L3 T/L3
14 14 2.5 2.5
14 14 2.5 2.5
12 12 4
10 10 6
6 8 16 10
6 6 16 16
4 4 25 25
Cable Size
2
) PVC Cables, etc. (mm
AWG
∗2
R/L1 R/L1
S/L2 U, V, W S/L2 U, V, W
T/L3 T/L3
14 14 2.5 2.5
12 14 4 2.5
12 12 4
10 10 6
8 8 10 10
Cable Size
2
) PVC Cables, etc. (mm
AWG
∗2
R/L1 R/L1
U, V, W U, V, W
S/L2 S/L2
14 14 2.5 2.5
14 14 2.5 2.5
14 14 2.5 2.5
12 14 4 2.5
Cable Size
2
) PVC Cables, etc. (mm
AWG
∗2
R/L1 R/L1
U, V, W U, V, W
S/L2 S/L2
14 14 2.5 2.5
14 14 2.5 2.5
2
)
∗3
Earthing
cable
2.5
2.5
4 4
6 6
6
16
16
2
)
∗3
Earthing
cable
2.5
4
4 4
6 10
10
2
)
∗3
Earthing
cable
2.5
2.5
2.5
2.5
2
)
∗3
Earthing
cable
2.5
2.5
9