Installation and wiring
2.5.3
Applicable cables and the wiring length
Select a recommended cable size to ensure that a voltage drop will be 2% or less.
If the wiring distance is long between the inverter and motor, a voltage drop in the main circuit wires
will cause the motor torque to decrease especially at a low speed.
The following table indicates a selection example for the wiring length of 20 m.
LD rating (Pr. 570 "Multiple rating setting" = "1")
● 200 V class (220 V input power supply)
Terminal
Applicable
screw
inverter model
FR-F820-
size
00046(0.75K) to
M4
00105(2.2K)
00167(3.7K)
M4
00250(5.5K)
M4
00340(7.5K)
M5
00490(11K)
M5
00630(15K)
M5
00770(18.5K)
M6
00930(22K)
M8(M6)
01250(30K)
M8(M6)
01540(37K)
M8(M6)
01870(45K)
M10(M8)
02330(55K)
M10(M8)
03160(75K)
M12(M8)
03800(90K)
M12(M8)
04750(110K)
M12(M8)
Tab. 2-11:
Cable size (200 V class), LD rating
FR-F800
Crimping
terminal
Tighten-
ing
torque
R/L1,
R/L1,
Nm
S/L2,
U, V, W
S/L2,
T/L3
1.5
2-4
2-4
1.5
5.5-4
5.5-4
1.5
5.5-4
5.5-4
2.5
14-5
8-5
2.5
14-5
14-5
2.5
22-5
22-5
4.4
38-6
38-6
7.8
38-8
38-8
7.8
60-8
60-8
7.8
80-8
80-8
14.7
100-10 100-10
14.7
100-10 100-10
24.5
150-12 150-12
24.5
150-12 150-12
24.5
100-12 100-12
HIV cables, etc. (mm²)
Earthing
(ground-
U, V, W P/+, P1
ing)
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
8
22
22
22
14
38
38
38
14
38
38
38
22
60
60
60
22
80
80
80
22
100
100
100
38
100
100
100
38
125
125
150
38
150
150
2×100
38
150
150
2×100
38
Main circuit terminals
Cable gauge
AWG/MCM
PVC cables, etc. (mm²)
R/L1,
R/L1,
S/L2,
U, V, W
S/L2,
U, V, W
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
—
2×4/0
2×4/0
—
2×4/0
2×4/0
—
Earthing
(ground-
ing)
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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