4 System Design
4-2
8
G5 Series AC Servo Drives With Built-in EtherCAT Communications, Linear Motor Type
*1
Use the same wire sizes for B1 and B2.
Additional Information
Wire Sizes and Allowable Current
The following table shows the allowable current when there are 3 power supply wires. Use a
current below these specified values.
600-V Heat-resistant Vinyl Wire (HIV)
Model (R
88
D-)
KN30F-ECT-L
KN50F-ECT-L
KN75F-ECT-L
KN150F-ECT-L
Item
Unit
Main circuit
power supply
input (L1 and
L3, or L1, L2
and L3)
Rated current
A
7.6
12.1
16.0
29.0
Wire size
AWG12
AWG10
AWG6
Screw size
M5
M6
Tightening
torque
N·m
2.0
2.0 to 2.4
2.2 to 2.5
Control circuit
power supply
input (L1C and
L2C)
Wire size
AWG18
Screw size
M5
M4
Tightening torque
N·m
2.0
1.3 to 1.5
0.7 to 0.8
Motor
connection
terminals
(U, V, W, and
FG)
*1
Rated current
A
9.4
16.5
22.0
33.4
Wire size
AWG12
AWG6
AWG4
Screw size
M5
M6
Tightening torque
N·m
2.0
2.0 to 2.4
2.2 to 2.5
Maximum wiring
length
m
20
Frame ground
(FG)
Wire size
AWG12
AWG6
AWG4
Screw size
M5
M6
Tightening torque
N·m
2.0
1.4 to 1.6
2.4 to 2.8
Maximum wiring
length
m
1
Dynamic brake
resister control
terminals
Wire size
AWG18
Screw size
M5
M6
Tightening torque
N·m
1.3 to 1.5
0.7 to 0.8
AWG
size
Nominal cross-
sectional area
[mm
2
]
Configuration
[wires/mm
2
]
Conductive
resistance
[
/km]
Allowable current [A] for ambient
temperature
30
C
40
C
50
C
20
0.5
19/0.18
39.5
6.6
5.6
4.5
0.75
30/0.18
26.0
8.8
7.0
5.5
18
0.9
37/0.18
24.4
9.0
7.7
6.0
16
1.25
50/0.18
15.6
12.0
11.0
8.5
14
2.0
7/0.6
9.53
23
20
16
12
3.5
7/0.8
5.41
33
29
24
10
5.5
7/1.0
3.47
43
38
31
8
8.0
7/1.2
2.41
55
49
40
6
14.0
7/1.6
1.35
79
70
57
4
22.0
7/2.0
0.85
99
88
70