Mitsubishi Electric FR-A700 Installation Manualline page 19
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WIRING
(2) Applicable cable 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 (65.62feet).
200V class (when input power supply is 220V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-A720-00030 to
M4
00110-NA/N4
FR-A720-00175-NA/
M4
N4
FR-A720-00240-NA/
M5(M4)
N4
FR-A720-00330-NA/
M5(M4)
N4
FR-A720-00460-NA
M5
FR-A720-00610-NA
M6
FR-A720-00760-NA
M8(M6)
FR-A720-00900-NA
M8(M6)
FR-A720-01150-NA
M8(M6)
FR-A720-01450-NA M10(M8)
FR-A720-01750-NA M10(M8)
FR-A720-02150-NA M12(M8)
FR-A720-02880-NA M12(M10)
FR-A720-03460-NA M12(M10)
*1
For the 02150 or less, the cable size is that of the cable (HIV cable (600V class 2 vinyl-insulated cable) etc.) with continuous maximum
permissible temperature of 75°C (167°F). Assumes that the surrounding air temperature is 50°C (122°F) or less and the wiring distance is 20m
(65.62feet) or less.
For the 02880 or more, the recommended cable size is that of the cable (LMFC (heat resistant flexible cross-linked polyethylene insulated cable)
etc.) with continuous maximum permissible temperature of 90°C (194°F). Assumes that the surrounding air temperature is 50°C (122°F) or less
and wiring is performed in an enclosure.
*2
The recommended cable size is that of the cable (THHW cable) with continuous maximum permissible temperature of 75°C (167°F). Assumes
that the surrounding air temperature is 40°C (104°F) or less and the wiring distance is 20m (65.62feet) or less.
(Selection example for use mainly in the United States.)
*3
For the 00610 or less, the recommended cable size is that of the cable (PVC cable) with continuous maximum permissible temperature of 70°C
(158°F). Assumes that the surrounding air temperature is 40°C (104°F) or less and the wiring distance is 20m (65.62feet) or less.
For the 00760 or more, the recommended cable size is that of the cable (XLPE cable) with continuous maximum permissible temperature of 90°C
(194°F). Assumes that the surrounding air temperature is 40°C (104°F) or less and wiring is performed in an enclosure.
(Selection example for use mainly in Europe.)
*4
The terminal screw size indicates the terminal size for R/L1, S/L2, T/L3, U, V, W, and a screw for earthing (grounding).
For the 00240 and 00330, screw size of terminal R1/L11, S1/L21, PR, and PX is indicated in ( )
A screw for earthing (grounding) of the 00760 or more is indicated in ( ).
16
Crimping
Tightening
Terminal
Torque
R/L1,
N·m
*4
U, V, W
S/L2,
T/L3
1.5
2-4
2-4
1.5
5.5-4
5.5-4
2.5
5.5-5
5.5-5
2.5
14-5
8-5
2.5
14-5
14-5
4.4
22-6
22-6
7.8
38-8
38-8
7.8
38-8
38-8
7.8
60-8
60-8
14.7
80-10 80-10
14.7
100-10 100-10
24.5
100-12 100-12
24.5
150-12 150-12
24.5
150-12 150-12
2
HIV, etc. (mm
)
*1
R/L1,
Earth
U, V, W P/+, P1
S/L2,
(Ground)
T/L3
cable
2
2
2
2
3.5
3.5
3.5
3.5
5.5
5.5
5.5
5.5
14
8
14
5.5
14
14
14
14
22
22
22
14
38
38
38
22
38
38
38
22
60
60
60
22
80
80
80
22
100
100
100
38
100
100
100
38
125
125
125
38
150
150
150
38
Cable Sizes
AWG/MCM
PVC, etc. (mm
*2
R/L1,
R/L1,
U, V, W
U, V, W
S/L2,
S/L2,
T/L3
T/L3
14
14
2.5
12
12
4
10
10
6
6
8
16
6
6
16
4
4
25
2
2
35
2
2
35
1/0
1/0
50
3/0
3/0
70
4/0
4/0
95
4/0
4/0
95
⎯
250
250
⎯
300
300
2
)
*3
Earth
(Ground)
cable
2.5
2.5
4
4
6
6
10
16
16
16
25
16
35
25
35
25
50
25
70
35
95
50
95
50
⎯
⎯
⎯
⎯
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