4-33
4 System Design
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
4-2 Wiring
4
4-2-3 Main Circuit and Motor Connections
The following table shows the allowable current when there are 3 power supply wires. Use a current
below these specified values.
z 600-V Heat-resistant Vinyl Wire (HIV)
On a Servo Drive with 2.0 kW or less, connector-type terminal blocks are used.
The procedure for wiring these terminal blocks is explained below.
1
Remove the terminal block from the Servo Drive before wiring.
The Servo Drive may be damaged if the wiring is done with the terminal block in place.
2
Strip off 8 to 9 mm of the covering from the end of each wire.
Refer to Terminal Block Wire Sizes on page 4-30 for applicable wire sizes.
Wire Sizes and Allowable Current (Reference)
AWG size
Nominal cross-
sectional area
(mm
2
)
Configuration
(wires/mm
2
)
Conductive
resistance
(Ω/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
Terminal Block Wiring Procedure
Connector-type terminal blocks
For example, R88D-KN02H-ECT
8 to 9 mm
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