Mitsubishi Electric FR-A720-0.4K Instruction Manual page 21

Wiring
(1) Cable sizes and other specifications of the main circuit terminals and the earthing terminal
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.
200V class (when input power supply is 220V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-A720-0.4K to
M4
2.2K
FR-A720-3.7K M4
FR-A720-5.5K M5(M4)
FR-A720-7.5K M5(M4)
FR-A720-11K M5
FR-A720-15K M6
FR-A720-18.5K M8(M6)
FR-A720-22K M8(M6)
FR-A720-30K M8(M6)
FR-A720-37K M10(M8)
FR-A720-45K M10(M8)
FR-A720-55K M12(M8)
FR-A720-75K M12(M10)
FR-A720-90K M12(M10)
400V class (when input power supply is 440V)
Terminal
Applicable Inverter
Screw
Model
Size
FR-A740-0.4K to
M4
3.7K
FR-A740-5.5K M4
FR-A740-7.5K M4
FR-A740-11K M5
FR-A740-15K M5
FR-A740-18.5K M6
FR-A740-22K M6
FR-A740-30K M6
FR-A740-37K M8
FR-A740-45K M8
FR-A740-55K M8
FR-A740-75K M10
FR-A740-90K M10
FR-A740-110K M10(M12)
FR-A740-132K M10(M12)
FR-A740-160K M12(M10)
FR-A740-185K M12(M10)
FR-A740-220K M12(M10)
FR-A740-250K M12(M10)
FR-A740-280K M12(M10)
FR-A740-315K M12(M10)
FR-A740-355K M12(M10)
FR-A740-400K M12(M10)
FR-A740-450K M12(M10)
FR-A740-500K M12(M10)
*1 For the 55K or lower, 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. Assumes that the surrounding air temperature is 50°C or less and the wiring distance is 20m or less.
For the 75K or higher, 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. Assumes that the surrounding air temperature is 50°C or less and wiring is performed in an
enclosure.
*2 For the all capacity of 200V class, and FR-A740-45K or lower, the recommended cable size is that of the cable (THHW cable) with continuous
maximum permissible temperature of 75°C. Assumes that the surrounding air temperature is 40°C or less and the wiring distance is 20m or less.
14
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
Crimping
Tightening
Terminal
Torque
R/L1,
N·m
*4 U, V, W
S/L2,
T/L3
1.5 2-4 2-4
1.5 2-4 2-4
1.5 5.5-4 5.5-4
2.5 5.5-5 5.5-5
2.5 8-5 8-5
4.4 14-6 8-6
4.4 14-6 14-6
4.4 22-6 22-6
7.8 22-8 22-8
7.8 38-8 38-8
7.8 60-8 60-8
14.7 60-10 60-10
14.7 60-10 60-10
14.7 80-10 80-10
14.7 100-10 100-10
24.5 150-12 150-12
24.5 150-12 150-12
46 100-12 100-12 2×100
46 100-12 100-12 2×100
46 150-12 150-12 2×125
46 150-12 150-12 2×150
46 C2-200 C2-200 2×200
46 C2-200 C2-200 2×200
46 C2-250 C2-250 2×250
46 C2-200 C2-250 3×200
Cable Sizes
2
HIV, etc. (mm )
*1
R/L1,
Earthing
U, V, W P/+, P1
S/L2,
cable
T/L3
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
2
HIV, etc. (mm )
*1
R/L1,
U, V, W P/+, P1 Earthing
S/L2,
Cable
T/L3
2 2 2 2
2 2 3.5 3.5
3.5 3.5 3.5 3.5
5.5 5.5 5.5 8
8 8 8 8
14 8 14 14
14 14 22 14
22 22 22 14
22 22 22 14
38 38 38 22
60 60 60 22
60 60 60 38
60 60 80 38
80 80 80 38
100 100 100 38
125 150 150 38
150 150 150 38
2×100 2×100 60
2×100 2×125 60
2×125 2×125 60
2×150 2×150 100
2×200 2×200 100
2×200 2×200 100
2×250 2×250 100
2×250 3×200 2×100 2×500 2×500 2×240 2×240 2×120
AWG/MCM
PVC, etc. (mm
*2
R/L1, R/L1,
U, V, W
S/L2, S/L2,
T/L3 T/L3
2 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
AWG/MCM
PVC, etc. (mm
*2
R/L1, R/L1,
U, V, W
S/L2, S/L2,
T/L3 T/L3
14 14 2.5
12 14 2.5
12 12 4
10 10 6
8 8 10
6 8 16
6 6 16
4 4 25
4 4 25
1 2 50
1/0 1/0 50
1/0 1/0 50
3/0 3/0 50
3/0 3/0 70
4/0 4/0 95
250 250 120
300 300 150
2×4/0 2×4/0 2×95
2×4/0 2×4/0 2×95
2×250 2×250 2×120 2×120
2×300 2×300 2×150 2×150
2×350 2×350 2×185 2×185
2×400 2×400 2×185 2×185
2×500 2×500 2×240 2×240 2×120
2
)
*3
Earthing
U, V, W
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
⎯ ⎯
⎯ ⎯
2
)
*3
U, V, W Earthing
Cable
2.5 2.5
2.5 4
4 4
6 10
10 10
10 16
16 16
25 16
25 16
50 25
50 25
50 25
50 25
70 35
95 50
120 70
150 95
2×95 95
2×95 95
120
150
2×95
2×95