YASKAWA S-7 Series Manual page 34

3 Wiring
3.4 Wire Sizes and Tightening Torques
SERVOPACK Main Circuit Wires
This section describes the main circuit wires for SERVOPACKs.
These specifications are based on IEC/EN 61800-5-1, UL
61800-5-1, and CSA C22.2 No.274.
1. To comply with UL standards, use UL-compliant wires.
2. Use copper wires with a rated temperature of 75C or higher.
Important
3. Use wires with a rated withstand voltage of 300 V or higher.
Note: To use 600-V-grade heat-resistant polyvinyl chloride-insulated wire (HIV),
use the following table as reference for the applicable wires.
• The specified wire sizes are for three bundled leads when the rated
current is applied with a surrounding air temperature of 40C.
• Select the wires according to the surrounding air temperature.
If you use a SERVOPACK that supports a Dynamic Brake Option and connect
an External Dynamic Brake Resistor, refer to the following section.

Dynamic Brake Resistor Terminals:
 -7S SERVOPACKs for Use with Three-Phase, 
200-VAC Power Supplies
SERVO-
PACK
Model:
SGD7S-
R70A
E-32
Terminal
Symbols
L1, L2, and L3 AWG16 (1.25 mm
U, V, and W*
AWG16 (1.25 mm
L1C and L2C
AWG16 (1.25 mm
B1/ and B2
AWG16 (1.25 mm
+
AWG14 (2.0 mm

Wire Size
2
)
2
)
2
)
2
)
2
) or larger
on page 44
Tightening
Screw
Torque
Size
[Nm]
– –
– –
– –
– –
M4 1.2 to 1.4
Continued on next page.