Wire Gauges And Tightening Torque - YASKAWA A1000 Technical Manual

3.6 Main Circuit Wiring
u

Wire Gauges and Tightening Torque

Use the tables in this section to select the appropriate wires and crimp terminals.
Gauges listed in the tables are for use in the United States.
Note: 1. Wire gauge recommendations based on drive continuous current ratings (ND) using 75 °C 600 Vac vinyl-sheathed wire assuming ambient
temperature within 40 °C and wiring distance less than 100 m.
2. Terminals +1, +2, +3, –, B1 and B2 are for connecting optional devices such as a DC reactor or braking resistor. Do not connect other
nonspecific devices to these terminals.
• Consider the amount of voltage drop when selecting wire gauges. Increase the wire gauge when the voltage drop is greater
than 2% of motor rated voltage. Ensure the wire gauge is suitable for the terminal block. Use the following formula to
calculate the amount of voltage drop:
Line drop voltage (V) = 3 × wire resistance (Ω/km) × wire length (m) × current (A) × 10
• Refer to instruction manual TOBP C720600 00 for braking transistor option or braking resistor option wire gauges.
• Use terminal +1 and the negative terminal when connecting a braking transistor option, regenerative converter, or a regen
unit.
NOTICE: Do not connect a braking resistor to terminals +1 or –. Failure to comply may cause damage to the drive circuitry.
• Refer to UL Standards Compliance on page 245
Yaskawa recommends using closed-loop crimp terminals on all drive models. UL/cUL approval requires the use of closed-
loop crimp terminals when wiring the drive main circuit terminals on models CIMR-Ao2A0110 to 2A0415 and 4A0058 to
4A1200. Use only the tools recommended by the terminal manufacturer for crimping.
Size on page 245 for closed-loop crimp terminal recommendations.
The wire gauges listed in the following tables are Yaskawa recommendations. Refer to local codes for proper wire gauge
selections.
n Three-Phase 200 V Class
Model
CIMR-Ao
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
2A0004
2A0006
–, +1, +2
2A0008
B1, B2
2A0010
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
–, +1, +2
2A0012
B1, B2
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
–, +1, +2
2A0018
B1, B2
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
–, +1, +2
2A0021
B1, B2
R/L1, S/L2, T/L3
U/T1, V/T2, W/T3
–, +1, +2
2A0030
B1, B2
52
Table 3.2 Wire Gauge and Torque Specifications (Three-Phase 200 V Class)
Recomm. Gauge
Terminal
for information on UL compliance.
Wire Range
AWG, kcmil AWG, kcmil
14
14
–
–
<1>
10
12
14
–
–
<1>
10
10
10
–
–
<1>
10
10
10
–
–
<1>
10
8
8
–
–
<1>
8
YASKAWA ELECTRIC TOEP C710616 41B YASKAWA AC Drive - A1000 Quick Start Guide
-3
Refer to Closed-Loop Crimp Terminal
Screw
Size
14 to 10
14 to 10
14 to 10
M4
14 to 10
14 to 10
14 to 10
14 to 10
14 to 10
M4
14 to 10
14 to 10
12 to 10
14 to 10
14 to 10
M4
14 to 10
14 to 10
12 to 10
12 to 10
12 to 10
M4
14 to 10
12 to 10
10 to 6
10 to 6
M4
10 to 6
14 to 10
10 to 8 M5
Tightening Torque
N·m (lb.in.)
1.2 to 1.5
(10.6 to 13.3)
1.2 to 1.5
(10.6 to 13.3)
1.2 to 1.5
(10.6 to 13.3)
1.2 to 1.5
(10.6 to 13.3)
1.2 to 1.5
(10.6 to 13.3)
2 to 2.5
(17.7 to 22.1)